FELIX-1200: Move features-maven-plugin into Karaf

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@785091 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/karaf/tooling/features-maven-plugin/LICENSE b/karaf/tooling/features-maven-plugin/LICENSE
new file mode 100644
index 0000000..6b0b127
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/LICENSE
@@ -0,0 +1,203 @@
+
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diff --git a/karaf/tooling/features-maven-plugin/NOTICE b/karaf/tooling/features-maven-plugin/NOTICE
new file mode 100644
index 0000000..7d60d0c
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/NOTICE
@@ -0,0 +1,9 @@
+   =========================================================================
+   ==  NOTICE file for use with the Apache License, Version 2.0,          ==
+   ==  in this case for the Apache Felix Karaf distribution.              ==
+   =========================================================================
+
+   This product contains software developed by
+   The Apache Software Foundation (http://www.apache.org/).
+
+
diff --git a/karaf/tooling/features-maven-plugin/pom.xml b/karaf/tooling/features-maven-plugin/pom.xml
new file mode 100644
index 0000000..b78e43e
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/pom.xml
@@ -0,0 +1,58 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <!--
+
+        Licensed to the Apache Software Foundation (ASF) under one or more
+        contributor license agreements.  See the NOTICE file distributed with
+        this work for additional information regarding copyright ownership.
+        The ASF licenses this file to You under the Apache License, Version 2.0
+        (the "License"); you may not use this file except in compliance with
+        the License.  You may obtain a copy of the License at
+
+           http://www.apache.org/licenses/LICENSE-2.0
+
+        Unless required by applicable law or agreed to in writing, software
+        distributed under the License is distributed on an "AS IS" BASIS,
+        WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+        See the License for the specific language governing permissions and
+        limitations under the License.
+    -->
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+      <groupId>org.apache.felix.karaf.tooling</groupId>
+      <artifactId>tooling</artifactId>
+      <version>1.2.0-SNAPSHOT</version>
+    </parent>
+
+    <groupId>org.apache.felix.karaf.tooling</groupId>
+    <artifactId>features-maven-plugin</artifactId>
+    <packaging>maven-plugin</packaging>
+    <version>1.2.0-SNAPSHOT</version>
+    <name>Apache Felix Karaf :: Maven2 Features plugin</name>
+
+    <description>
+      A Maven 2 plugin for working with feature descriptors
+    </description>
+
+    <dependencies>
+      <dependency>
+        <groupId>org.apache.maven</groupId>
+        <artifactId>maven-plugin-api</artifactId>
+      </dependency>
+      <dependency>
+        <groupId>org.apache.maven</groupId>
+        <artifactId>maven-project</artifactId>
+      </dependency>
+      <dependency>
+        <groupId>org.apache.felix</groupId>
+        <artifactId>maven-bundle-plugin</artifactId>
+      </dependency>
+      <dependency>
+        <groupId>org.jmock</groupId>
+        <artifactId>jmock</artifactId>
+        <version>2.5.0</version>
+        <scope>test</scope>
+      </dependency>
+    </dependencies>
+
+</project>
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/AddFeaturesToRepoMojo.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/AddFeaturesToRepoMojo.java
new file mode 100644
index 0000000..a245fcb
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/AddFeaturesToRepoMojo.java
@@ -0,0 +1,327 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.Properties;
+import java.util.Hashtable;
+import java.util.Set;
+import java.util.HashSet;
+import java.io.File;
+import java.io.IOException;
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.io.BufferedOutputStream;
+import java.io.FileOutputStream;
+import java.io.FileInputStream;
+import java.net.URI;
+import java.net.URL;
+
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.w3c.dom.*;
+
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.DefaultArtifact;
+import org.apache.maven.artifact.handler.DefaultArtifactHandler;
+import org.apache.maven.artifact.versioning.VersionRange;
+import org.xml.sax.SAXException;
+
+/**
+ * Generates the features XML file
+ *
+ * @version $Revision: 1.1 $
+ * @goal add-features-to-repo
+ * @phase compile
+ * @execute phase="compile"
+ * @requiresDependencyResolution runtime
+ * @inheritByDefault true
+ * @description Add the features to the repository
+ */
+public class AddFeaturesToRepoMojo extends MojoSupport {
+
+    /**
+     * @parameter
+     */
+    private List<String> descriptors;
+
+    /**
+     * @parameter
+     */
+    private List<String> features;
+
+    /**
+     * @parameter
+     */
+    private File repository;
+
+    public void execute() throws MojoExecutionException, MojoFailureException {
+        try {
+            Map<String, Feature> featuresMap = new HashMap<String, Feature>();
+            for (String uri : descriptors) {
+                Repository repo = new Repository(URI.create(translateFromMaven(uri)));
+                for (Feature f : repo.getFeatures()) {
+                    featuresMap.put(f.getName(), f);
+                }
+            }
+            Set<String> transitiveFeatures = new HashSet<String>();
+            addFeatures(features, transitiveFeatures, featuresMap);
+            Set<String> bundles = new HashSet<String>();
+            for (String feature : transitiveFeatures) {
+                bundles.addAll(featuresMap.get(feature).getBundles());
+            }
+            System.out.println("Base repo: " + localRepo.getUrl());
+            for (String bundle : bundles) {
+                if (!bundle.startsWith("mvn:")) {
+                    throw new MojoExecutionException("Bundle url is not a maven url: " + bundle);
+                }
+                String[] parts = bundle.substring("mvn:".length()).split("/");
+                String groupId = parts[0];
+                String artifactId = parts[1];
+                String version = null;
+                String classifier = null;
+                String type = "jar";
+                if (parts.length > 2) {
+                    version = parts[2];
+                    if (parts.length > 3) {
+                        classifier = parts[3];
+                        if (parts.length > 4) {
+                            type = parts[4];
+                        }
+                    }
+                }
+                String dir = groupId.replace('.', '/') + "/" + artifactId + "/" + version + "/";
+                String name = artifactId + "-" + version + (classifier != null ? "-" + classifier : "") + "." + type;
+                System.out.println("Copy:      " + dir + name);
+                copy(new URL(getLocalRepoUrl() + "/" + dir + name).openStream(),
+                     repository,
+                     name,
+                     dir,
+                     new byte[8192]);
+
+            }
+        } catch (MojoExecutionException e) {
+            throw e;
+        } catch (MojoFailureException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new MojoExecutionException("Error populating repository", e);
+        }
+    }
+
+    private String translateFromMaven(String uri) {
+        if (uri.startsWith("mvn:")) {
+            String[] parts = uri.substring("mvn:".length()).split("/");
+            String groupId = parts[0];
+            String artifactId = parts[1];
+            String version = null;
+            String classifier = null;
+            String type = "jar";
+            if (parts.length > 2) {
+                version = parts[2];
+                if (parts.length > 3) {
+                    type = parts[3];
+                    if (parts.length > 4) {
+                        classifier = parts[4];
+                    }
+                }
+            }
+            String dir = groupId.replace('.', '/') + "/" + artifactId + "/" + version + "/";
+            String name = artifactId + "-" + version + (classifier != null ? "-" + classifier : "") + "." + type;
+
+            return getLocalRepoUrl() + "/" + dir + name;
+        }
+        if (System.getProperty("os.name").startsWith("Windows") && uri.startsWith("file:")) {
+        	String baseDir = uri.substring(5).replace('\\', '/').replaceAll(" ", "%20");
+        	String result = baseDir;
+        	if (baseDir.indexOf(":") > 0) {
+        		result = "file:///" + baseDir;
+        	}
+        	return result;
+        }
+        return uri;
+    }
+
+    private String getLocalRepoUrl() {
+    	 if (System.getProperty("os.name").startsWith("Windows")) {
+             String baseDir = localRepo.getBasedir().replace('\\', '/').replaceAll(" ", "%20");
+             return localRepo.getProtocol() + ":///" + baseDir;
+    	 } else {
+    		 return localRepo.getUrl();
+    	 }
+    }
+
+    private void addFeatures(List<String> features, Set<String> transitiveFeatures, Map<String, Feature> featuresMap) {
+        for (String feature : features) {
+            Feature f = featuresMap.get(feature);
+            transitiveFeatures.add(feature);
+            addFeatures(f.getDependencies(), transitiveFeatures, featuresMap);
+        }
+    }
+
+    public static void copy(
+        InputStream is, File dir, String destName, String destDir, byte[] buffer)
+        throws IOException
+    {
+        if (destDir == null)
+        {
+            destDir = "";
+        }
+
+        // Make sure the target directory exists and
+        // that is actually a directory.
+        File targetDir = new File(dir, destDir);
+        if (!targetDir.exists())
+        {
+            if (!targetDir.mkdirs())
+            {
+                throw new IOException("Unable to create target directory: "
+                    + targetDir);
+            }
+        }
+        else if (!targetDir.isDirectory())
+        {
+            throw new IOException("Target is not a directory: "
+                + targetDir);
+        }
+
+        BufferedOutputStream bos = new BufferedOutputStream(
+            new FileOutputStream(new File(targetDir, destName)));
+        int count = 0;
+        while ((count = is.read(buffer)) > 0)
+        {
+            bos.write(buffer, 0, count);
+        }
+        bos.close();
+    }
+
+    public static class Feature {
+
+        private String name;
+        private List<String> dependencies = new ArrayList<String>();
+        private List<String> bundles = new ArrayList<String>();
+        private Map<String, Map<String,String>> configs = new HashMap<String, Map<String,String>>();
+
+        public Feature(String name) {
+            this.name = name;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public List<String> getDependencies() {
+            return dependencies;
+        }
+
+        public List<String> getBundles() {
+            return bundles;
+        }
+
+        public Map<String, Map<String, String>> getConfigurations() {
+            return configs;
+        }
+
+        public void addDependency(String dependency) {
+            dependencies.add(dependency);
+        }
+
+        public void addBundle(String bundle) {
+            bundles.add(bundle);
+        }
+
+        public void addConfig(String name, Map<String,String> properties) {
+            configs.put(name, properties);
+        }
+    }
+
+    public static class Repository {
+
+        private URI uri;
+        private List<Feature> features;
+
+        public Repository(URI uri) {
+            this.uri = uri;
+        }
+
+        public URI getURI() {
+            return uri;
+        }
+
+        public Feature[] getFeatures() throws Exception {
+            if (features == null) {
+                load();
+            }
+            return features.toArray(new Feature[features.size()]);
+        }
+
+        public void load() throws IOException {
+            try {
+                features = new ArrayList<Feature>();
+                DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+                Document doc = factory.newDocumentBuilder().parse(uri.toURL().openStream());
+                NodeList nodes = doc.getDocumentElement().getChildNodes();
+                for (int i = 0; i < nodes.getLength(); i++) {
+                    org.w3c.dom.Node node = nodes.item(i);
+                    if (!(node instanceof Element) || !"feature".equals(node.getNodeName())) {
+                        continue;
+                    }
+                    Element e = (Element) nodes.item(i);
+                    String name = e.getAttribute("name");
+                    Feature f = new Feature(name);
+                    NodeList featureNodes = e.getElementsByTagName("feature");
+                    for (int j = 0; j < featureNodes.getLength(); j++) {
+                        Element b = (Element) featureNodes.item(j);
+                        f.addDependency(b.getTextContent());
+                    }
+                    NodeList configNodes = e.getElementsByTagName("config");
+                    for (int j = 0; j < configNodes.getLength(); j++) {
+                        Element c = (Element) configNodes.item(j);
+                        String cfgName = c.getAttribute("name");
+                        String data = c.getTextContent();
+                        Properties properties = new Properties();
+                        properties.load(new ByteArrayInputStream(data.getBytes()));
+                        Map<String, String> hashtable = new Hashtable<String, String>();
+                        for (Object key : properties.keySet()) {
+                            String n = key.toString();
+                            hashtable.put(n, properties.getProperty(n));
+                        }
+                        f.addConfig(cfgName, hashtable);
+                    }
+                    NodeList bundleNodes = e.getElementsByTagName("bundle");
+                    for (int j = 0; j < bundleNodes.getLength(); j++) {
+                        Element b = (Element) bundleNodes.item(j);
+                        f.addBundle(b.getTextContent());
+                    }
+                    features.add(f);
+                }
+            } catch (SAXException e) {
+                throw (IOException) new IOException().initCause(e);
+            } catch (ParserConfigurationException e) {
+                throw (IOException) new IOException().initCause(e);
+            }
+        }
+
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesFileMojo.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesFileMojo.java
new file mode 100644
index 0000000..07004f2
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesFileMojo.java
@@ -0,0 +1,479 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipException;
+import java.util.zip.ZipFile;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.InvalidArtifactRTException;
+import org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException;
+import org.apache.maven.artifact.metadata.ResolutionGroup;
+import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
+import org.apache.maven.artifact.resolver.ArtifactResolutionException;
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+import org.apache.maven.artifact.versioning.InvalidVersionSpecificationException;
+import org.apache.maven.artifact.versioning.OverConstrainedVersionException;
+import org.apache.maven.artifact.versioning.VersionRange;
+import org.apache.maven.model.Dependency;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.osgi.impl.bundle.obr.resource.Manifest;
+
+/**
+ * Generates the features XML file
+ * 
+ * @version $Revision: 1.1 $
+ * @goal generate-features-file
+ * @phase compile
+ * @execute phase="compile"
+ * @requiresDependencyResolution runtime
+ * @inheritByDefault true
+ * @description Generates the features XML file
+ */
+@SuppressWarnings("unchecked")
+public class GenerateFeaturesFileMojo extends MojoSupport {
+    protected static final String SEPARATOR = "/";
+
+    /**
+     * The file to generate
+     * 
+     * @parameter default-value="${project.build.directory}/classes/feature.xml"
+     */
+    private File outputFile;
+
+    /**
+     * The name of the feature, which defaults to the artifact ID if its not
+     * specified
+     * 
+     * @parameter default-value="${project.artifactId}"
+     */
+    private String featureName;
+
+    /**
+     * The artifact type for attaching the generated file to the project
+     * 
+     * @parameter default-value="xml"
+     */
+    private String attachmentArtifactType = "xml";
+
+    /**
+     * The artifact classifier for attaching the generated file to the project
+     * 
+     * @parameter default-value="features"
+     */
+    private String attachmentArtifactClassifier = "features";
+
+    /**
+     * Should we generate a <feature> for the current project?
+     * 
+     * @parameter default-value="false"
+     */
+    private boolean includeProject = false;
+
+    /**
+     * Should we generate a <feature> for the current project's <dependency>s?
+     * 
+     * @parameter default-value="true"
+     */
+    private boolean includeDependencies = true;
+    
+    /**
+     * The kernel version for which to generate the bundle
+     * 
+     * @parameter
+     */
+    private String kernelVersion;
+    
+    /**
+     * A properties file containing bundle translations
+     * 
+     * @parameter
+     */
+    private File translation;
+    
+    /*
+     * The translations
+     */
+    private Map<String, Map<VersionRange, String>> translations = new HashMap<String, Map<VersionRange,String>>() {
+    	@Override
+    	public Map<VersionRange, String> get(Object key) {
+    		if (super.get(key) == null) {
+    			super.put(key.toString(), new HashMap<VersionRange, String>());
+    		}
+    		return super.get(key);
+    	}
+    };
+    
+    /*
+     * These bundles are the features that will be built
+     */
+    private Set<Artifact> features = new HashSet<Artifact>();
+
+    /*
+     * These bundles are provided by SMX4 and will be excluded from <feature/>
+     * generation
+     */
+    private Set<Artifact> provided = new HashSet<Artifact>();
+    
+    /*
+     * List of bundles included in the current feature
+     */
+    private Set<Artifact> currentFeature = new HashSet<Artifact>();
+    
+    /*
+     * List of missing bundles
+     */
+    private Set<Artifact> missingBundles = new TreeSet<Artifact>();
+
+    public void execute() throws MojoExecutionException, MojoFailureException {
+        OutputStream out = null;
+        try {
+        	prepare();
+        	getLog().info(String.format("-- Start generating %s --", outputFile.getAbsolutePath()));
+            outputFile.getParentFile().mkdirs();
+            out = new FileOutputStream(outputFile);
+            
+            PrintStream printer = new PrintStream(out);
+            populateProperties(printer);
+            getLog().info(String.format("-- Done generating %s --", outputFile.getAbsolutePath()));
+
+            // now lets attach it
+            projectHelper.attachArtifact(project, attachmentArtifactType, attachmentArtifactClassifier, outputFile);
+        } catch (Exception e) {
+            throw new MojoExecutionException("Unable to create dependencies file: " + e, e);
+        } finally {
+            if (out != null) {
+                try {
+                    out.close();
+                } catch (IOException e) {
+                    getLog().info("Failed to close: " + outputFile + ". Reason: " + e, e);
+                }
+            }
+        }
+    }
+
+    protected void populateProperties(PrintStream out) throws ArtifactResolutionException, ArtifactNotFoundException, IOException {
+        out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+        out.println("<features>");
+        if (includeProject) {
+            writeCurrentProjectFeature(out);
+        }
+        if (includeDependencies) {
+            writeProjectDependencyFeatures(out);
+        }
+        out.println("</features>");
+    }
+
+    private void prepare() throws ArtifactResolutionException, ArtifactNotFoundException, IOException, InvalidVersionSpecificationException {
+    	if (translation != null) {
+    		InputStream stream = null;
+    		try {
+    			stream = new BufferedInputStream(new FileInputStream(translation));
+    			Properties file = new Properties();
+    			file.load(stream);
+    			ArrayList<String> stringNames = getStringNames(file);
+    			for (String key : stringNames) {
+    				String[] elements = key.split("/");
+    				translations.get(String.format("%s/%s", elements[0], elements[1]))
+    				            .put(VersionRange.createFromVersionSpec(elements[2]), file.getProperty(key));
+    			}
+    			getLog().info("Loaded " + translations.size() + " bundle name translation rules from " + translation.getAbsolutePath());
+    		} finally {
+    			if (stream != null) {
+    				stream.close();
+    			}
+    		}
+    	}
+    	
+    	Artifact kernel = factory.createArtifact("org.apache.felix.karaf", 
+    			                                 "apache-felix-karaf",
+    			                                 kernelVersion, Artifact.SCOPE_PROVIDED, "pom");
+    	resolver.resolve(kernel, remoteRepos, localRepo);
+    	getLog().info("-- List of bundles provided by ServiceMix Kernel " + kernelVersion + " --");
+        for (Artifact artifact : getDependencies(kernel)) {
+        	getLog().info(" " + artifact);
+            provided.add(artifact);
+        }
+        getLog().info("-- <end of list>  --");
+    }
+
+    private ArrayList<String> getStringNames(Properties file) {
+    	// this method simulate the Properties.stringPropertyNames() of JDK6 in order to make this class 
+    	// compile with jdk5
+    	ArrayList<String> ret = new ArrayList<String>();
+    	Enumeration<?> name = file.propertyNames();
+    	while (name.hasMoreElements()) {
+    		Object ele = name.nextElement();
+    		if (ele instanceof String && file.get(ele) instanceof String) {
+    			ret.add((String)ele);
+    		}
+    	}
+		return ret;
+	}
+
+	private void writeProjectDependencyFeatures(PrintStream out) {
+        Set<Artifact> dependencies = (Set<Artifact>)project.getDependencyArtifacts();
+        dependencies.removeAll(provided);
+        for (Artifact artifact : dependencies) {
+            getLog().info(" Generating feature " + artifact.getArtifactId() + " from " + artifact);
+            out.println("  <feature name='" + artifact.getArtifactId() + "'>");
+            currentFeature.clear();
+            writeBundle(out, artifact);
+            features.add(artifact);
+            out.println("  </feature>");
+        }
+        if (missingBundles.size() > 0) {
+        	getLog().info("-- Some bundles were missing  --");
+        	for (Artifact artifact : missingBundles) {
+        		getLog().info(String.format(" %s", artifact));
+        	}
+        }
+    }
+
+    private void writeBundle(PrintStream out, Artifact artifact) {
+    	Artifact replacement = getReplacement(artifact);
+    	if (replacement != null) {
+    		writeBundle(out, replacement);
+    		return;
+    	}
+        if (isProvided(artifact)) {
+            getLog().debug(String.format("Skipping '%s' -- bundle will be provided at runtime", artifact));
+            return;
+        }
+        if (features.contains(artifact)) {
+            // if we already created a feature for this one, just add that instead of the bundle
+            out.println(String.format("    <feature>%s</feature>", artifact.getArtifactId()));
+            return;
+        }
+        // first write the dependencies
+        for (Artifact dependency : getDependencies(artifact)) {
+            if (dependency.isOptional() || Artifact.SCOPE_TEST.equals(dependency.getScope())) {
+                // omit optional dependencies
+                getLog().debug(String.format("Omitting optional and/or test scoped dependency '%s' for '%s'", 
+                                             dependency, artifact));
+                continue;
+            }
+            getLog().debug(String.format("Adding '%s' as a dependency for '%s'", dependency, artifact));
+            writeBundle(out, dependency);
+        }
+        // skip the bundle if it was already added to this feature previously
+        if (!currentFeature.add(artifact)) {
+            getLog().debug(String.format("Artifact '%s' was already added to the current feature", artifact));
+            return;
+        }
+        // and then write the bundle itself
+        if (isBundle(artifact)) {
+        	getLog().info(String.format("  adding bundle %s", artifact));
+            writeBundle(out, artifact.getGroupId(), artifact.getArtifactId(), artifact.getBaseVersion());
+        } else {
+            Artifact wrapper = findServicemixBundle(artifact);
+            if (wrapper != null) {
+            	getLog().info(String.format("  adding bundle %s (for %s)", wrapper, artifact));
+            	writeBundle(out, wrapper.getGroupId(), wrapper.getArtifactId(), wrapper.getBaseVersion());
+            } else {
+            	getLog().error(String.format(" unable to find suitable bundle for artifact '%s'", artifact));
+            	missingBundles.add(artifact);
+            }
+        }
+    }
+
+	private Artifact getReplacement(Artifact artifact) {
+		String key = String.format("%s/%s", artifact.getGroupId(), artifact.getArtifactId());
+		String bundle = null;
+		for (VersionRange range : translations.get(key).keySet()) {
+			try {
+				if (range.containsVersion(artifact.getSelectedVersion())) {
+					bundle = translations.get(key).get(range);
+					break;
+				}
+			} catch (OverConstrainedVersionException e) {
+				bundle = null;
+			}
+		}
+		if (bundle != null) {
+			String[] split = bundle.split("/");
+			return factory.createArtifact(split[0], split[1], split[2], Artifact.SCOPE_PROVIDED, artifact.getArtifactHandler().getPackaging());
+		} else {
+			return null;
+		}
+	}
+
+	private Artifact findServicemixBundle(Artifact artifact) {
+        Artifact noVersionWrapper = factory.createArtifact("org.apache.servicemix.bundles", 
+                                                  "org.apache.servicemix.bundles." + artifact.getArtifactId(), 
+                                                  "", 
+                                                  artifact.getScope(), artifact.getType());
+        try {
+            List versions = artifactMetadataSource.retrieveAvailableVersions(noVersionWrapper, localRepo, remoteRepos);
+            Artifact wrapper = factory.createArtifact("org.apache.servicemix.bundles", 
+                                                      "org.apache.servicemix.bundles." + artifact.getArtifactId(), 
+                                                      getBestVersionForArtifact(artifact, versions), 
+                                                      artifact.getScope(), artifact.getType());
+            // let's check if the servicemix bundle for this artifact exists
+            resolver.resolve(wrapper, remoteRepos, localRepo);
+            for (Artifact dependency : getDependencies(wrapper)) {
+                //some of these wrapper bundles provide for multiple JAR files, no need to include any of them after adding the wrapper
+                getLog().debug(String.format("'%s' also provides '%s'", wrapper, dependency));
+                currentFeature.add(dependency);
+            }
+            return wrapper;
+        } catch (ArtifactResolutionException e) {
+            getLog().debug("Couldn't find a ServiceMix bundle for " + artifact, e);
+        } catch (ArtifactNotFoundException e) {
+            getLog().debug("Couldn't find a ServiceMix bundle for " + artifact, e);
+        } catch (ArtifactMetadataRetrievalException e) {
+            getLog().debug("Couldn't find a ServiceMix bundle for " + artifact, e);
+        }
+        if (artifact.getArtifactId().contains("-")) {
+            //let's try to see if we can't find a bundle wrapping multiple artifacts (e.g. mina -> mina-core, mina-codec, ...)
+            return findServicemixBundle(factory.createArtifact(artifact.getGroupId(), artifact.getArtifactId().split("-")[0], 
+                                                               artifact.getVersion(), artifact.getScope(), artifact.getType()));
+        } else {
+            return null;
+        }
+    }
+
+    protected String getBestVersionForArtifact(Artifact artifact, List<ArtifactVersion> versions) throws ArtifactMetadataRetrievalException {
+        if (versions.size() == 0) {
+            throw new ArtifactMetadataRetrievalException("No wrapper bundle available for " + artifact);
+        }
+        Collections.sort(versions, Collections.reverseOrder());
+        //check for same version
+        for (ArtifactVersion version : versions) {
+            if (version.toString().startsWith(artifact.getVersion())) {
+                return version.toString();
+            }
+        }
+        //check for same major/minor version
+        for (ArtifactVersion version : versions) {
+            String[] elements = version.toString().split("\\.");
+            if (elements.length >= 2 && artifact.getVersion().startsWith(elements[0] + "." + elements[1])) {
+                return version.toString();
+            }
+        }
+        throw new ArtifactMetadataRetrievalException("No suitable version found for " + artifact + " wrapper bundle");
+    }
+
+    private boolean isProvided(Artifact bundle) {
+        for (Artifact artifact : provided) {
+            if (bundle.getArtifactId().equals(artifact.getArtifactId())
+                && bundle.getGroupId().equals(artifact.getGroupId())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean isBundle(Artifact artifact) {
+        if (artifact.getArtifactHandler().getPackaging().equals("bundle")) {
+            return true;
+        } else {
+            try {
+                resolver.resolve(artifact, remoteRepos, localRepo);
+                ZipFile file = new ZipFile(artifact.getFile());
+                ZipEntry entry = file.getEntry("META-INF/MANIFEST.MF");
+                Manifest manifest = new Manifest(file.getInputStream(entry));
+                if (manifest.getBsn() != null) {
+                    getLog().debug(String.format("MANIFEST.MF for '%s' contains Bundle-Name '%s'",
+                                                 artifact, manifest.getBsn().getName()));
+                    return true;
+                }
+            } catch (ZipException e) {
+                getLog().warn("Unable to determine if " + artifact + " is a bundle; defaulting to false", e);
+            } catch (IOException e) {
+                getLog().warn("Unable to determine if " + artifact + " is a bundle; defaulting to false", e);
+            } catch (Exception e) {
+                getLog().warn("Unable to determine if " + artifact + " is a bundle; defaulting to false", e);
+            }
+        }
+        return false;
+    }
+
+    private List<Artifact> getDependencies(Artifact artifact) {
+        List<Artifact> list = new ArrayList<Artifact>();
+        try {
+            ResolutionGroup pom = artifactMetadataSource.retrieve(artifact, localRepo, remoteRepos);
+            if (pom != null) {
+            	list.addAll(pom.getArtifacts());
+            }
+        } catch (ArtifactMetadataRetrievalException e) {
+            getLog().warn("Unable to retrieve metadata for " + artifact + ", not including dependencies for it");
+        } catch (InvalidArtifactRTException e) {
+            getLog().warn("Unable to retrieve metadata for " + artifact + ", not including dependencies for it");
+        }
+        return list;
+    }
+
+
+    private void writeCurrentProjectFeature(PrintStream out) {
+        out.println("  <feature name='" + featureName + "'>");
+
+        writeBundle(out, project.getGroupId(), project.getArtifactId(), project.getVersion());
+        out.println();
+
+        Iterator iterator = project.getDependencies().iterator();
+        while (iterator.hasNext()) {
+            Dependency dependency = (Dependency)iterator.next();
+
+            if (isValidDependency(dependency)) {
+                out.print("  ");
+                writeBundle(out, dependency.getGroupId(), dependency.getArtifactId(), dependency.getVersion());
+            }
+        }
+
+        out.println("  </feature>");
+    }
+
+    protected boolean isValidDependency(Dependency dependency) {
+        // TODO filter out only compile time dependencies which are OSGi
+        // bundles?
+        return true;
+    }
+
+    protected void writeBundle(PrintStream out, String groupId, String artifactId, String version) {
+        out.print("    <bundle>mvn:");
+        out.print(groupId);
+        out.print("/");
+        out.print(artifactId);
+        out.print("/");
+        out.print(version);
+        out.print("</bundle>");
+        out.println();
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesXmlMojo.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesXmlMojo.java
new file mode 100644
index 0000000..85d4647
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesXmlMojo.java
@@ -0,0 +1,578 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
+import java.util.Stack;
+import java.util.zip.ZipException;
+import java.util.zip.ZipFile;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.InvalidArtifactRTException;
+import org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException;
+import org.apache.maven.artifact.metadata.ResolutionGroup;
+import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
+import org.apache.maven.artifact.resolver.ArtifactResolutionException;
+import org.apache.maven.artifact.resolver.DefaultArtifactCollector;
+import org.apache.maven.artifact.resolver.filter.ArtifactFilter;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.shared.dependency.tree.DependencyNode;
+import org.apache.maven.shared.dependency.tree.DependencyTreeBuilder;
+import org.apache.maven.shared.dependency.tree.DependencyTreeBuilderException;
+import org.apache.maven.shared.dependency.tree.traversal.DependencyNodeVisitor;
+import org.osgi.impl.bundle.obr.resource.Manifest;
+import org.osgi.impl.bundle.obr.resource.ManifestEntry;
+import org.osgi.impl.bundle.obr.resource.VersionRange;
+
+/**
+ * Generates the features XML file
+ * 
+ * @version $Revision: 1.1 $
+ * @goal generate-features-xml
+ * @phase compile
+ * @execute phase="compile"
+ * @requiresDependencyResolution runtime
+ * @inheritByDefault true
+ * @description Generates the features XML file
+ */
+@SuppressWarnings("unchecked")
+public class GenerateFeaturesXmlMojo extends MojoSupport {
+    protected static final String SEPARATOR = "/";
+    
+    /**
+     * The dependency tree builder to use.
+     * 
+     * @component
+     * @required
+     * @readonly
+     */
+    private DependencyTreeBuilder dependencyTreeBuilder;
+
+    /**
+     * The file to generate
+     * 
+     * @parameter default-value="${project.build.directory}/classes/feature.xml"
+     */
+    private File outputFile;
+
+    /**
+     * The artifact type for attaching the generated file to the project
+     * 
+     * @parameter default-value="xml"
+     */
+    private String attachmentArtifactType = "xml";
+
+    /**
+     * The artifact classifier for attaching the generated file to the project
+     * 
+     * @parameter default-value="features"
+     */
+    private String attachmentArtifactClassifier = "features";
+
+    /**
+     * The kernel version for which to generate the bundle
+     * 
+     * @parameter
+     */
+    private String kernelVersion;
+    
+    /*
+     * A list of packages exported by the kernel
+     */
+    private Map<String, VersionRange> kernelExports = new HashMap<String, VersionRange>();
+
+    /**
+     * A file containing the list of bundles
+     * 
+     * @parameter
+     */
+    private File bundles;
+
+    /*
+     * A set of known bundles
+     */
+    private Set<String> knownBundles = new HashSet<String>();
+    
+    /*
+     * A list of exports by the bundles
+     */
+    private Map<String, Map<VersionRange, Artifact>> bundleExports = new HashMap<String, Map<VersionRange, Artifact>>();
+
+    /*
+     * The set of system exports
+     */
+    private List<String> systemExports = new LinkedList<String>();
+    
+    /*
+     * These bundles are the features that will be built
+     */
+    private Map<Artifact, Feature> features = new HashMap<Artifact, Feature>();
+
+    public void execute() throws MojoExecutionException, MojoFailureException {
+        PrintStream out = null;
+        try {
+            out = new PrintStream(new FileOutputStream(outputFile));
+            readSystemPackages();
+            readKernelBundles();
+            readBundles();
+            discoverBundles();
+            writeFeatures(out);
+            // now lets attach it
+            projectHelper.attachArtifact(project, attachmentArtifactType, attachmentArtifactClassifier, outputFile);
+        } catch (Exception e) {
+            getLog().error(e);
+            throw new MojoExecutionException("Unable to create features.xml file: " + e, e);
+        } finally {
+            if (out != null) {
+                out.close();
+            }
+        }
+    }
+    
+	/*
+     * Read all the system provided packages from the <code>config.properties</code> file 
+     */
+    private void readSystemPackages() throws IOException {
+        Properties properties = new Properties();
+        properties.load(getClass().getClassLoader().getResourceAsStream("config.properties"));
+        readSystemPackages(properties, "jre-1.5");
+        readSystemPackages(properties, "osgi");
+    }
+
+    
+    private void readSystemPackages(Properties properties, String key) {
+        String packages = (String) properties.get(key);
+        for (String pkg : packages.split(";")) {
+            systemExports.add(pkg.trim());
+        }
+    }
+
+    /*
+     * Download a Kernel distro and check the list of bundles provided by the Kernel
+     */
+    private void readKernelBundles() throws ArtifactResolutionException, ArtifactNotFoundException, MojoExecutionException,
+        ZipException, IOException, DependencyTreeBuilderException {
+        final Collection<Artifact> kernelArtifacts;
+        if (kernelVersion == null) {
+           getLog().info("Step 1: Building list of provided bundle exports");
+           kernelArtifacts = new HashSet<Artifact>();
+           DependencyNode tree = dependencyTreeBuilder.buildDependencyTree(project, localRepo, factory, artifactMetadataSource, new ArtifactFilter() {
+
+            public boolean include(Artifact artifact) {
+                return true;
+            }
+               
+           }, new DefaultArtifactCollector());
+           tree.accept(new DependencyNodeVisitor() {
+                public boolean endVisit(DependencyNode node) {
+                    // we want the next sibling too
+                    return true;
+                }
+                public boolean visit(DependencyNode node) {
+                    if (node.getState() != DependencyNode.OMITTED_FOR_CONFLICT) {
+                        Artifact artifact = node.getArtifact();
+                        if (Artifact.SCOPE_PROVIDED.equals(artifact.getScope()) && !artifact.getType().equals("pom")) {
+                            kernelArtifacts.add(artifact);
+                        }
+                    }
+                    // we want the children too
+                    return true;
+                }
+            });
+        } else {
+            getLog().info("Step 1 : Building list of kernel exports");
+            getLog().warn("Use of 'kernelVersion' is deprecated -- use a dependency with scope 'provided' instead");
+            Artifact kernel = factory.createArtifact("org.apache.servicemix.kernel", "apache-servicemix-kernel", kernelVersion, Artifact.SCOPE_PROVIDED, "pom");
+            resolver.resolve(kernel, remoteRepos, localRepo);
+            kernelArtifacts = getDependencies(kernel);
+        }
+        for (Artifact artifact : kernelArtifacts) {
+            registerKernelBundle(artifact);
+        }
+        getLog().info("...done!");
+    }
+
+    private void registerKernelBundle(Artifact artifact) throws ArtifactResolutionException, ArtifactNotFoundException, ZipException,
+            IOException {
+        Manifest manifest = getManifest(artifact);
+        if (manifest.getExports() != null) {
+            for (ManifestEntry entry : (List<ManifestEntry>)manifest.getExports()) {
+                kernelExports.put(entry.getName(), entry.getVersion());
+                getLog().debug(" adding kernel export " + entry.getName() + " (" + entry.getVersion() + ")");
+            }
+        }
+        registerBundle(artifact);
+    }
+
+    /*
+     * Read the list of bundles we can use to satisfy links
+     */
+    private void readBundles() throws IOException, ArtifactResolutionException, ArtifactNotFoundException {        
+        BufferedReader reader = null;
+        try {
+            if (bundles != null) {
+                getLog().info("Step 2 : Building a list of exports for bundles in " + bundles.getAbsolutePath());
+                reader = new BufferedReader(new FileReader(bundles));
+                String line = reader.readLine();
+                while (line != null) {
+                    if (line.contains("/") && !line.startsWith("#")) {
+                        String[] elements = line.split("/");
+                        Artifact artifact = factory.createArtifact(elements[0], elements[1], elements[2], Artifact.SCOPE_PROVIDED,
+                                                                   elements[3]);
+                        registerBundle(artifact);
+                    }
+                    line = reader.readLine();
+                }                
+            } else {
+                getLog().info("Step 2 : No Bundle file supplied for building list of exports");
+            }
+        } finally {
+            if (reader != null) {
+                reader.close();
+            }
+        }
+        getLog().info("...done!");
+    }
+    
+    /*
+     * Auto-discover bundles currently in the dependencies
+     */
+    private void discoverBundles() throws ArtifactResolutionException, ArtifactNotFoundException, ZipException, IOException {
+    	getLog().info("Step 3 : Discovering bundles in Maven dependencies");
+		for (Artifact dependency : (Set<Artifact>) project.getArtifacts()) {
+			// we will generate a feature for this afterwards
+			if (project.getDependencyArtifacts().contains(dependency)) {
+				continue;
+			}
+			// this is a provided bundle, has been handled in step 1
+			if (dependency.getScope().equals(Artifact.SCOPE_PROVIDED)) {
+			    continue;
+			}
+			if (isDiscoverableBundle(dependency)) {
+				getLog().info("  Discovered " + dependency);
+				registerBundle(dependency);
+			}
+		}
+		getLog().info("...done!");
+	}
+
+    /*
+     * Write all project dependencies as feature
+     */
+    private void writeFeatures(PrintStream out) throws ArtifactResolutionException, ArtifactNotFoundException,
+        ZipException, IOException {
+        getLog().info("Step 4 : Generating " + outputFile.getAbsolutePath());
+        out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+        out.println("<features>");
+        Set<Artifact> dependencies = (Set<Artifact>)project.getDependencyArtifacts();
+        for (Artifact artifact : dependencies) {
+            if (!artifact.getScope().equals(Artifact.SCOPE_PROVIDED) && !artifact.getType().equals("pom")) {
+                getLog().info(" Generating feature " + artifact.getArtifactId() + " from " + artifact);
+                Feature feature = getFeature(artifact);
+                feature.write(out);
+                registerFeature(artifact, feature);
+            }
+        }
+        out.println("</features>");
+        getLog().info("...done!");
+    }
+
+    /*
+     * Get the feature for an artifact 
+     */
+    private Feature getFeature(Artifact artifact) throws ArtifactResolutionException, ArtifactNotFoundException, ZipException, IOException {
+        Feature feature = new Feature(artifact);
+        addRequirements(artifact, feature);
+        return feature;
+    }
+
+    /*
+     * Only auto-discover an OSGi bundle
+     * - if it is not already known as a feature itself
+     * - if it is not another version of an already known bundle
+     */
+    private boolean isDiscoverableBundle(Artifact artifact) {
+        if (isBundle(artifact) && !isFeature(artifact) && !artifact.getScope().equals(Artifact.SCOPE_PROVIDED)) {
+            for (String known : knownBundles) {
+                String[] elements = known.split("/");
+                if (artifact.getGroupId().equals(elements[0]) &&
+                    artifact.getArtifactId().equals(elements[1])) {
+                    getLog().debug(String.format("  Avoid auto-discovery for %s because of existing bundle %s", 
+                                                 toString(artifact), known));
+                    return false;
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
+    /*
+     * Check if the given artifact is a bundle
+     */
+    private boolean isBundle(Artifact artifact) {
+        if (knownBundles.contains(toString(artifact)) || artifact.getArtifactHandler().getPackaging().equals("bundle")) {
+            return true;
+        } else {
+            try {
+                Manifest manifest = getManifest(artifact);
+                if (manifest.getBsn() != null) {
+                    getLog().debug(String.format("MANIFEST.MF for '%s' contains Bundle-Name '%s'",
+                                                 artifact, manifest.getBsn().getName()));
+                    return true;
+                }
+            } catch (ZipException e) {
+                getLog().debug("Unable to determine if " + artifact + " is a bundle; defaulting to false", e);
+            } catch (IOException e) {
+                getLog().debug("Unable to determine if " + artifact + " is a bundle; defaulting to false", e);
+            } catch (Exception e) {
+                getLog().debug("Unable to determine if " + artifact + " is a bundle; defaulting to false", e);
+            }
+        }
+        return false;
+     }
+
+    /*
+     * Add requirements for an artifact to a feature
+     */
+    private void addRequirements(Artifact artifact, Feature feature) throws ArtifactResolutionException, ArtifactNotFoundException, ZipException, IOException {
+        Manifest manifest = getManifest(artifact);
+        Collection<ManifestEntry> remaining = getRemainingImports(manifest);
+        Artifact previous = null;
+        for (ManifestEntry entry : remaining) {
+            Artifact add = null;
+            Map<VersionRange, Artifact> versions = bundleExports.get(entry.getName());
+            if (versions != null) {
+                for (VersionRange range : versions.keySet()) {
+                    add = versions.get(range);
+                    if (range.compareTo(entry.getVersion()) == 0) {
+                        add = versions.get(range);
+                    }
+                }
+            }
+            if (add == null) {
+                if (isOptional(entry)) {
+                    // debug logging for optional dependency...
+                    getLog().debug(String.format("  Unable to find suitable bundle for optional dependency %s (%s)", 
+                                                 entry.getName(), entry.getVersion()));
+                } else {
+                    // ...but a warning for a mandatory dependency
+                    getLog().warn(
+                                  String.format("  Unable to find suitable bundle for dependency %s (%s) (required by %s)", 
+                                                entry.getName(), entry.getVersion(), artifact.getArtifactId()));
+                }
+            } else {
+                if (!add.equals(previous) && feature.push(add) && !isFeature(add)) {
+                    //and get requirements for the bundle we just added
+                    getLog().debug("  Getting requirements for " + add);
+                    addRequirements(add, feature);
+                }
+            }
+            previous = add;
+        }
+    }
+
+    /*
+     * Check if a given bundle is itself being generated as a feature
+     */
+    private boolean isFeature(Artifact artifact) {
+        return features.containsKey(artifact);
+    }
+
+    /*
+     * Check a manifest entry and check if the resolution for the import has been marked as optional 
+     */
+    private boolean isOptional(ManifestEntry entry) {
+        return entry.getAttributes() != null && entry.getAttributes().get("resolution:") != null
+               && entry.getAttributes().get("resolution:").equals("optional");
+    }
+
+    /*
+     * Register a bundle, enlisting all packages it provides
+     */
+    private void registerBundle(Artifact artifact) throws ArtifactResolutionException, ArtifactNotFoundException, ZipException,
+        IOException {
+        getLog().debug("Registering bundle " + artifact);
+        knownBundles.add(toString(artifact));
+        Manifest manifest = getManifest(artifact);
+        for (ManifestEntry entry : getManifestEntries(manifest.getExports())) {
+            Map<VersionRange, Artifact> versions = bundleExports.get(entry.getName());
+            if (versions == null) {
+                versions = new HashMap<VersionRange, Artifact>();
+            }
+            versions.put(entry.getVersion(), artifact);
+            getLog().debug(String.format(" %s exported by bundle %s", entry.getName(), artifact));
+            bundleExports.put(entry.getName(), versions);
+        }
+    }
+
+    /*
+     * Register a feature and also register the bundle for the feature
+     */
+    private void registerFeature(Artifact artifact, Feature feature) throws ArtifactResolutionException, ArtifactNotFoundException, ZipException,
+        IOException {
+        features.put(artifact, feature);
+        registerBundle(artifact);
+    }
+
+    /*
+     * Determine the list of imports to be resolved
+     */
+    private Collection<ManifestEntry> getRemainingImports(Manifest manifest) {
+        // take all imports
+        Collection<ManifestEntry> input = getManifestEntries(manifest.getImports());
+        Collection<ManifestEntry> output = new LinkedList<ManifestEntry>(input);
+        // remove imports satisfied by exports in the same bundle
+        for (ManifestEntry entry : input) {
+            for (ManifestEntry export : getManifestEntries(manifest.getExports())) {
+                if (entry.getName().equals(export.getName())) {
+                    output.remove(entry);
+                }
+            }
+        }
+        // remove imports for packages exported by the kernel
+        for (ManifestEntry entry : input) {
+            for (String export : kernelExports.keySet()) {
+                if (entry.getName().equals(export)) {
+                    output.remove(entry);
+                }
+            }
+        }
+        // remove imports for packages exported by the system bundle
+        for (ManifestEntry entry : input) {
+            if (systemExports.contains(entry.getName())) {
+                output.remove(entry);
+            }
+        }
+        return output;
+    }
+
+    private Collection<ManifestEntry> getManifestEntries(List imports) {
+        if (imports == null) {
+            return new LinkedList<ManifestEntry>();
+        } else {
+            return (Collection<ManifestEntry>)imports;
+        }
+    }
+
+    private Manifest getManifest(Artifact artifact) throws ArtifactResolutionException, ArtifactNotFoundException, ZipException,
+        IOException {
+        File localFile = new File(localRepo.pathOf(artifact));
+        ZipFile file;
+        if (localFile.exists()) {
+            //avoid going over to the repository if the file is already on the disk
+            file = new ZipFile(localFile);
+        } else {
+            resolver.resolve(artifact, remoteRepos, localRepo);
+            file = new ZipFile(artifact.getFile());
+        }
+        return new Manifest(file.getInputStream(file.getEntry("META-INF/MANIFEST.MF")));
+    }
+
+    private List<Artifact> getDependencies(Artifact artifact) {
+        List<Artifact> list = new ArrayList<Artifact>();
+        try {
+            ResolutionGroup pom = artifactMetadataSource.retrieve(artifact, localRepo, remoteRepos);
+            if (pom != null) {
+                list.addAll(pom.getArtifacts());
+            }
+        } catch (ArtifactMetadataRetrievalException e) {
+            getLog().warn("Unable to retrieve metadata for " + artifact + ", not including dependencies for it");
+        } catch (InvalidArtifactRTException e) {
+            getLog().warn("Unable to retrieve metadata for " + artifact + ", not including dependencies for it");
+        }
+        return list;
+    }
+    
+    public static String toString(Artifact artifact) {
+        return String.format("%s/%s/%s", artifact.getGroupId(), artifact.getArtifactId(), artifact.getVersion());
+    }
+
+    private class Feature {
+
+        private Stack<Artifact> artifacts = new Stack<Artifact>();
+        private final Artifact artifact;
+        
+        private Feature(Artifact artifact) {
+            super();
+            this.artifact = artifact;
+            artifacts.push(artifact);
+        }
+
+        public boolean push(Artifact item) {
+            if (artifacts.contains(item)) {
+                artifacts.remove(item);
+                artifacts.push(item);
+                return false;
+            }
+            if (!artifacts.contains(item)) {
+                artifacts.push(item);
+                return true;
+            }
+            return false;
+        }
+
+        public void write(PrintStream out) {
+            out.println("  <feature name='" + artifact.getArtifactId() + "' version='"
+            		+ artifact.getBaseVersion() + "'>");
+            
+            Stack<Artifact> resulting = new Stack<Artifact>();
+            resulting.addAll(artifacts);
+
+            // remove dependencies for included features
+            for (Artifact next : artifacts) {
+                if (isFeature(next)) {
+                    resulting.removeAll(features.get(next).getDependencies());
+                }
+            }
+            
+            while (!resulting.isEmpty()) {
+            	Artifact next = resulting.pop();
+                if (isFeature(next)) {
+                    out.println("    <feature version='"
+            		+ next.getBaseVersion() + "'>" + String.format("%s</feature>", next.getArtifactId()));
+                } else {
+            		out.println(String.format("    <bundle>mvn:%s/%s/%s</bundle>", 
+                            next.getGroupId(), next.getArtifactId(), next.getBaseVersion()));
+                }
+            }
+            out.println("  </feature>");
+        }
+        
+        public List<Artifact> getDependencies() {
+            List<Artifact> dependencies = new LinkedList<Artifact>(artifacts);
+            dependencies.remove(artifact);
+            return dependencies;
+        }
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GraphArtifactCollector.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GraphArtifactCollector.java
new file mode 100644
index 0000000..05608d9
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/GraphArtifactCollector.java
@@ -0,0 +1,435 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException;
+import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
+import org.apache.maven.artifact.metadata.ResolutionGroup;
+import org.apache.maven.artifact.repository.ArtifactRepository;
+import org.apache.maven.artifact.resolver.ArtifactCollector;
+import org.apache.maven.artifact.resolver.ArtifactResolutionException;
+import org.apache.maven.artifact.resolver.ArtifactResolutionResult;
+import org.apache.maven.artifact.resolver.CyclicDependencyException;
+import org.apache.maven.artifact.resolver.ResolutionListener;
+import org.apache.maven.artifact.resolver.ResolutionNode;
+import org.apache.maven.artifact.resolver.filter.ArtifactFilter;
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+import org.apache.maven.artifact.versioning.OverConstrainedVersionException;
+import org.apache.maven.artifact.versioning.VersionRange;
+
+/**
+ * @version $Revision: 1.1 $
+ */
+public class GraphArtifactCollector implements ArtifactCollector {
+    public ArtifactResolutionResult collect(
+            Set artifacts,
+            Artifact originatingArtifact,
+            ArtifactRepository localRepository,
+            List remoteRepositories,
+            ArtifactMetadataSource source,
+            ArtifactFilter filter,
+            List listeners) throws ArtifactResolutionException {
+        return collect(artifacts, originatingArtifact, Collections.EMPTY_MAP,
+                localRepository, remoteRepositories, source, filter, listeners);
+    }
+
+    public ArtifactResolutionResult collect(
+            Set artifacts,
+            Artifact originatingArtifact,
+            Map managedVersions,
+            ArtifactRepository localRepository,
+            List remoteRepositories,
+            ArtifactMetadataSource source,
+            ArtifactFilter filter,
+            List listeners) throws ArtifactResolutionException {
+        Map resolvedArtifacts = new HashMap();
+
+        ResolutionNode root = new ResolutionNode(originatingArtifact, remoteRepositories);
+        root.addDependencies(artifacts, remoteRepositories, filter);
+        recurse(root, resolvedArtifacts, managedVersions, localRepository,
+                remoteRepositories, source, filter, listeners);
+
+        Set set = new HashSet();
+        for (Iterator i = resolvedArtifacts.values().iterator(); i.hasNext();) {
+            List nodes = (List) i.next();
+            for (Iterator j = nodes.iterator(); j.hasNext();) {
+                ResolutionNode node = (ResolutionNode) j.next();
+                Artifact artifact = node.getArtifact();
+                if (!node.equals(root) && node.isActive() && node.filterTrail(filter)
+                        // If it was optional and not a direct dependency,
+                        // we don't add it or its children, just allow the
+                        // update of the version and scope
+                        && (node.isChildOfRootNode() || !artifact.isOptional())) {
+                    artifact.setDependencyTrail(node.getDependencyTrail());
+                    set.add(node);
+                }
+            }
+        }
+
+        ArtifactResolutionResult result = new ArtifactResolutionResult();
+        result.setArtifactResolutionNodes(set);
+        return result;
+    }
+
+    private void recurse(
+            ResolutionNode node,
+            Map resolvedArtifacts,
+            Map managedVersions,
+            ArtifactRepository localRepository,
+            List remoteRepositories,
+            ArtifactMetadataSource source,
+            ArtifactFilter filter,
+            List listeners) throws CyclicDependencyException, ArtifactResolutionException,
+            OverConstrainedVersionException {
+        fireEvent(ResolutionListener.TEST_ARTIFACT, listeners, node);
+
+        // TODO: use as a conflict resolver
+        Object key = node.getKey();
+        if (managedVersions.containsKey(key)) {
+            Artifact artifact = (Artifact) managedVersions.get(key);
+            fireEvent(ResolutionListener.MANAGE_ARTIFACT, listeners, node, artifact);
+            if (artifact.getVersion() != null) {
+                node.getArtifact().setVersion(artifact.getVersion());
+            }
+            if (artifact.getScope() != null) {
+                node.getArtifact().setScope(artifact.getScope());
+            }
+        }
+
+        List previousNodes = (List) resolvedArtifacts.get(key);
+        if (previousNodes != null) {
+            node = checkPreviousNodes(node, listeners, previousNodes);
+        }
+        else {
+            previousNodes = new ArrayList();
+            resolvedArtifacts.put(key, previousNodes);
+        }
+        previousNodes.add(node);
+
+        if (node.isActive()) {
+            fireEvent(ResolutionListener.INCLUDE_ARTIFACT, listeners, node);
+        }
+
+        // don't pull in the transitive deps of a system-scoped dependency.
+        if (node.isActive() && !Artifact.SCOPE_SYSTEM.equals(node.getArtifact().getScope())) {
+            fireEvent(ResolutionListener.PROCESS_CHILDREN, listeners, node);
+            for (Iterator i = node.getChildrenIterator(); i.hasNext();) {
+                ResolutionNode child = (ResolutionNode) i.next();
+                // We leave in optional ones, but don't pick up its dependencies
+                if (!child.isResolved()
+                        && (!child.getArtifact().isOptional() || child.isChildOfRootNode())) {
+                    Artifact artifact = child.getArtifact();
+                    try {
+                        if (artifact.getVersion() == null) {
+                            // set the recommended version
+                            // TODO: maybe its better to just pass the range
+                            // through to retrieval and use a transformation?
+                            ArtifactVersion version;
+                            version = getArtifactVersion(localRepository, remoteRepositories, source, artifact);
+
+                            artifact.selectVersion(version.toString());
+                            fireEvent(ResolutionListener.SELECT_VERSION_FROM_RANGE,
+                                    listeners, child);
+                        }
+
+                        ResolutionGroup rGroup = source.retrieve(artifact,
+                                localRepository, remoteRepositories);
+
+                        // TODO might be better to have source.retreive() throw
+                        // a specific exception for this situation
+                        // and catch here rather than have it return null
+                        if (rGroup == null) {
+                            // relocated dependency artifact is declared
+                            // excluded, no need to add and recurse further
+                            continue;
+                        }
+
+                        child.addDependencies(rGroup.getArtifacts(),
+                                rGroup.getResolutionRepositories(), filter);
+                    }
+                    catch (CyclicDependencyException e) {
+                        // would like to throw this, but we have crappy stuff in
+                        // the repo
+
+                        fireEvent(ResolutionListener.OMIT_FOR_CYCLE, listeners,
+                                new ResolutionNode(e.getArtifact(), remoteRepositories, child));
+                    }
+                    catch (ArtifactMetadataRetrievalException e) {
+                        artifact.setDependencyTrail(node.getDependencyTrail());
+                        throw new ArtifactResolutionException(
+                                "Unable to get dependency information: "
+                                        + e.getMessage(), artifact, e);
+                    }
+
+                    recurse(child, resolvedArtifacts, managedVersions,
+                            localRepository, remoteRepositories, source,
+                            filter, listeners);
+                }
+            }
+            fireEvent(ResolutionListener.FINISH_PROCESSING_CHILDREN, listeners,
+                    node);
+        }
+    }
+
+    private ArtifactVersion getArtifactVersion(
+            ArtifactRepository localRepository,
+            List remoteRepositories,
+            ArtifactMetadataSource source,
+            Artifact artifact) throws OverConstrainedVersionException,
+            ArtifactMetadataRetrievalException {
+        ArtifactVersion version;
+        if (!artifact.isSelectedVersionKnown()) {
+            List versions = artifact.getAvailableVersions();
+            if (versions == null) {
+                versions = source.retrieveAvailableVersions(
+                        artifact, localRepository,
+                        remoteRepositories);
+                artifact.setAvailableVersions(versions);
+            }
+
+            VersionRange versionRange = artifact.getVersionRange();
+
+            version = versionRange.matchVersion(versions);
+
+            if (version == null) {
+                if (versions.isEmpty()) {
+                    throw new OverConstrainedVersionException(
+                            "No versions are present in the repository for the artifact with a range "
+                                    + versionRange, artifact, remoteRepositories);
+                }
+                else {
+                    throw new OverConstrainedVersionException(
+                            "Couldn't find a version in "
+                                    + versions
+                                    + " to match range "
+                                    + versionRange,
+                            artifact, remoteRepositories);
+                }
+            }
+        }
+        else {
+            version = artifact.getSelectedVersion();
+        }
+        return version;
+    }
+
+    private ResolutionNode checkPreviousNodes(
+            ResolutionNode node,
+            List listeners,
+            List previousNodes) throws OverConstrainedVersionException {
+        for (Iterator i = previousNodes.iterator(); i.hasNext();) {
+            ResolutionNode previous = (ResolutionNode) i.next();
+            if (previous.isActive()) {
+                // Version mediation
+                VersionRange previousRange = previous.getArtifact().getVersionRange();
+                VersionRange currentRange = node.getArtifact().getVersionRange();
+                // TODO: why do we force the version on it? what if they
+                // don't match?
+                if (previousRange == null) {
+                    // version was already resolved
+                    node.getArtifact().setVersion(previous.getArtifact().getVersion());
+                }
+                else if (currentRange == null) {
+                    // version was already resolved
+                    previous.getArtifact().setVersion(node.getArtifact().getVersion());
+                }
+                else {
+                    // TODO: shouldn't need to double up on this work, only
+                    // done for simplicity of handling recommended
+                    // version but the restriction is identical
+                    VersionRange newRange = previousRange.restrict(currentRange);
+                    // TODO: ick. this forces the OCE that should have come
+                    // from the previous call. It is still correct
+                    if (newRange.isSelectedVersionKnown(previous.getArtifact())) {
+                        fireEvent(ResolutionListener.RESTRICT_RANGE,
+                                listeners, node, previous.getArtifact(),
+                                newRange);
+                    }
+                    previous.getArtifact().setVersionRange(newRange);
+                    node.getArtifact().setVersionRange(
+                            currentRange.restrict(previousRange));
+
+                    // Select an appropriate available version from the (now
+                    // restricted) range
+                    // Note this version was selected before to get the
+                    // appropriate POM
+                    // But it was reset by the call to setVersionRange on
+                    // restricting the version
+                    ResolutionNode[] resetNodes = {previous, node};
+                    for (int j = 0; j < 2; j++) {
+                        Artifact resetArtifact = resetNodes[j]
+                                .getArtifact();
+                        if (resetArtifact.getVersion() == null
+                                && resetArtifact.getVersionRange() != null
+                                && resetArtifact.getAvailableVersions() != null) {
+
+                            resetArtifact
+                                    .selectVersion(resetArtifact
+                                            .getVersionRange()
+                                            .matchVersion(
+                                                    resetArtifact
+                                                            .getAvailableVersions())
+                                            .toString());
+                            fireEvent(ResolutionListener.SELECT_VERSION_FROM_RANGE,
+                                    listeners, resetNodes[j]);
+                        }
+                    }
+                }
+
+                // Conflict Resolution
+                // TODO: use as conflict resolver(s), chain
+
+                // TODO: should this be part of mediation?
+                // previous one is more dominant
+                if (previous.getDepth() <= node.getDepth()) {
+                    checkScopeUpdate(node, previous, listeners);
+                }
+                else {
+                    checkScopeUpdate(previous, node, listeners);
+                }
+
+                if (previous.getDepth() <= node.getDepth()) {
+                    // previous was nearer
+                    fireEvent(ResolutionListener.OMIT_FOR_NEARER,
+                            listeners, node, previous.getArtifact());
+                    node.disable();
+                    node = previous;
+                }
+                else {
+                    fireEvent(ResolutionListener.OMIT_FOR_NEARER,
+                            listeners, previous, node.getArtifact());
+                    previous.disable();
+                }
+            }
+        }
+        return node;
+    }
+
+    private void checkScopeUpdate(ResolutionNode farthest,
+            ResolutionNode nearest, List listeners) {
+        boolean updateScope = false;
+        Artifact farthestArtifact = farthest.getArtifact();
+        Artifact nearestArtifact = nearest.getArtifact();
+
+        if (Artifact.SCOPE_RUNTIME.equals(farthestArtifact.getScope())
+                && (Artifact.SCOPE_TEST.equals(nearestArtifact.getScope()) || Artifact.SCOPE_PROVIDED
+                .equals(nearestArtifact.getScope()))) {
+            updateScope = true;
+        }
+
+        if (Artifact.SCOPE_COMPILE.equals(farthestArtifact.getScope())
+                && !Artifact.SCOPE_COMPILE.equals(nearestArtifact.getScope())) {
+            updateScope = true;
+        }
+
+        // current POM rules all
+        if (nearest.getDepth() < 2 && updateScope) {
+            updateScope = false;
+
+            fireEvent(ResolutionListener.UPDATE_SCOPE_CURRENT_POM, listeners,
+                    nearest, farthestArtifact);
+        }
+
+        if (updateScope) {
+            fireEvent(ResolutionListener.UPDATE_SCOPE, listeners, nearest,
+                    farthestArtifact);
+
+            // previously we cloned the artifact, but it is more effecient to
+            // just update the scope
+            // if problems are later discovered that the original object needs
+            // its original scope value, cloning may
+            // again be appropriate
+            nearestArtifact.setScope(farthestArtifact.getScope());
+        }
+    }
+
+    private void fireEvent(int event, List listeners, ResolutionNode node) {
+        fireEvent(event, listeners, node, null);
+    }
+
+    private void fireEvent(int event, List listeners, ResolutionNode node,
+            Artifact replacement) {
+        fireEvent(event, listeners, node, replacement, null);
+    }
+
+    private void fireEvent(int event, List listeners, ResolutionNode node,
+            Artifact replacement, VersionRange newRange) {
+        for (Iterator i = listeners.iterator(); i.hasNext();) {
+            ResolutionListener listener = (ResolutionListener) i.next();
+
+            switch (event) {
+                case ResolutionListener.TEST_ARTIFACT:
+                    listener.testArtifact(node.getArtifact());
+                    break;
+                case ResolutionListener.PROCESS_CHILDREN:
+                    listener.startProcessChildren(node.getArtifact());
+                    break;
+                case ResolutionListener.FINISH_PROCESSING_CHILDREN:
+                    listener.endProcessChildren(node.getArtifact());
+                    break;
+                case ResolutionListener.INCLUDE_ARTIFACT:
+                    listener.includeArtifact(node.getArtifact());
+                    break;
+                case ResolutionListener.OMIT_FOR_NEARER:
+                    String version = node.getArtifact().getVersion();
+                    String replacementVersion = replacement.getVersion();
+                    if (version != null ? !version.equals(replacementVersion)
+                            : replacementVersion != null) {
+                        listener.omitForNearer(node.getArtifact(), replacement);
+                    }
+                    break;
+                case ResolutionListener.OMIT_FOR_CYCLE:
+                    listener.omitForCycle(node.getArtifact());
+                    break;
+                case ResolutionListener.UPDATE_SCOPE:
+                    listener
+                            .updateScope(node.getArtifact(), replacement.getScope());
+                    break;
+                case ResolutionListener.UPDATE_SCOPE_CURRENT_POM:
+                    listener.updateScopeCurrentPom(node.getArtifact(), replacement
+                            .getScope());
+                    break;
+                case ResolutionListener.MANAGE_ARTIFACT:
+                    listener.manageArtifact(node.getArtifact(), replacement);
+                    break;
+                case ResolutionListener.SELECT_VERSION_FROM_RANGE:
+                    listener.selectVersionFromRange(node.getArtifact());
+                    break;
+                case ResolutionListener.RESTRICT_RANGE:
+                    if (node.getArtifact().getVersionRange().hasRestrictions()
+                            || replacement.getVersionRange().hasRestrictions()) {
+                        listener.restrictRange(node.getArtifact(), replacement,
+                                newRange);
+                    }
+                    break;
+                default:
+                    throw new IllegalStateException("Unknown event: " + event);
+            }
+        }
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/MojoSupport.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/MojoSupport.java
new file mode 100644
index 0000000..d309b58
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/MojoSupport.java
@@ -0,0 +1,299 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+
+import java.io.File;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.factory.ArtifactFactory;
+import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
+import org.apache.maven.artifact.repository.ArtifactRepository;
+import org.apache.maven.artifact.resolver.ArtifactCollector;
+import org.apache.maven.artifact.resolver.ArtifactResolutionException;
+import org.apache.maven.artifact.resolver.ArtifactResolver;
+import org.apache.maven.artifact.versioning.InvalidVersionSpecificationException;
+import org.apache.maven.artifact.versioning.VersionRange;
+import org.apache.maven.model.Dependency;
+import org.apache.maven.model.DependencyManagement;
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.project.MavenProject;
+import org.apache.maven.project.MavenProjectBuilder;
+import org.apache.maven.project.MavenProjectHelper;
+import org.apache.maven.project.ProjectBuildingException;
+
+/**
+ * @version $Revision: 1.1 $
+ */
+public abstract class MojoSupport extends AbstractMojo {
+
+    /**
+     * Maven ProjectHelper
+     *
+     * @component
+     */
+    protected MavenProjectHelper projectHelper;
+
+    /**
+     * The maven project.
+     *
+     * @parameter expression="${project}"
+     * @required
+     * @readonly
+     */
+    protected MavenProject project;
+
+    /**
+     * Directory that resources are copied to during the build.
+     *
+     * @parameter expression="${project.build.directory}/${project.artifactId}-${project.version}-installer"
+     * @required
+     */
+    protected File workDirectory;
+
+    /**
+     * @component
+     */
+    protected MavenProjectBuilder projectBuilder;
+
+    /**
+     * @parameter default-value="${localRepository}"
+     */
+    protected ArtifactRepository localRepo;
+
+    /**
+     * @parameter default-value="${project.remoteArtifactRepositories}"
+     */
+    protected List remoteRepos;
+
+    /**
+     * @component
+     */
+    protected ArtifactMetadataSource artifactMetadataSource;
+
+    /**
+     * @component
+     */
+    protected ArtifactResolver resolver;
+
+    protected ArtifactCollector collector = new GraphArtifactCollector();
+
+    /**
+     * @component
+     */
+    protected ArtifactFactory factory;
+
+    protected MavenProject getProject() {
+        return project;
+    }
+
+    protected File getWorkDirectory() {
+        return workDirectory;
+    }
+
+    public MavenProjectHelper getProjectHelper() {
+        return projectHelper;
+    }
+
+    protected void removeBranch(ResolutionListenerImpl listener,
+            Artifact artifact) {
+        Node n = listener.getNode(artifact);
+        if (n != null) {
+            for (Iterator it = n.getParents().iterator(); it.hasNext();) {
+                Node parent = (Node) it.next();
+                parent.getChildren().remove(n);
+            }
+        }
+    }
+
+    protected void removeChildren(ResolutionListenerImpl listener,
+            Artifact artifact) {
+        Node n = listener.getNode(artifact);
+        n.getChildren().clear();
+    }
+
+    protected Set getArtifacts(Node n, Set s) {
+        if (!s.contains(n.getArtifact())) {
+            s.add(n.getArtifact());
+            for (Iterator iter = n.getChildren().iterator(); iter.hasNext();) {
+                Node c = (Node) iter.next();
+                getArtifacts(c, s);
+            }
+        }
+        return s;
+    }
+
+    protected void excludeBranch(Node n, Set excludes) {
+        excludes.add(n);
+        for (Iterator iter = n.getChildren().iterator(); iter.hasNext();) {
+            Node c = (Node) iter.next();
+            excludeBranch(c, excludes);
+        }
+    }
+
+    protected void print(Node rootNode) {
+        for (Iterator iter = getArtifacts(rootNode, new HashSet()).iterator(); iter.hasNext();) {
+            Artifact a = (Artifact) iter.next();
+            getLog().info(" " + a);
+        }
+    }
+
+    protected Set retainArtifacts(Set includes, ResolutionListenerImpl listener) {
+        Set finalIncludes = new HashSet();
+        Set filteredArtifacts = getArtifacts(listener.getRootNode(),
+                new HashSet());
+        for (Iterator iter = includes.iterator(); iter.hasNext();) {
+            Artifact artifact = (Artifact) iter.next();
+            for (Iterator iter2 = filteredArtifacts.iterator(); iter2.hasNext();) {
+                Artifact filteredArtifact = (Artifact) iter2.next();
+                if (filteredArtifact.getArtifactId().equals(
+                        artifact.getArtifactId())
+                        && filteredArtifact.getType()
+                                .equals(artifact.getType())
+                        && filteredArtifact.getGroupId().equals(
+                                artifact.getGroupId())) {
+                    if (!filteredArtifact.getVersion().equals(
+                            artifact.getVersion())) {
+                        getLog()
+                                .warn(
+                                        "Resolved artifact "
+                                                + artifact
+                                                + " has a different version from that in dependency management "
+                                                + filteredArtifact
+                                                + ", overriding dependency management");
+                    }
+                    finalIncludes.add(artifact);
+                }
+            }
+
+        }
+
+        return finalIncludes;
+    }
+
+    protected ResolutionListenerImpl resolveProject() {
+        Map managedVersions = null;
+        try {
+            managedVersions = createManagedVersionMap(project.getId(), project
+                    .getDependencyManagement());
+        } catch (ProjectBuildingException e) {
+            getLog().error(
+                    "An error occurred while resolving project dependencies.",
+                    e);
+        }
+        ResolutionListenerImpl listener = new ResolutionListenerImpl();
+        listener.setLog(getLog());
+        try {
+            collector.collect(project.getDependencyArtifacts(), project
+                    .getArtifact(), managedVersions, localRepo, remoteRepos,
+                    artifactMetadataSource, null, Collections
+                            .singletonList(listener));
+        } catch (ArtifactResolutionException e) {
+            getLog().error(
+                    "An error occurred while resolving project dependencies.",
+                    e);
+        }
+        if (getLog().isDebugEnabled()) {
+            getLog().debug("Dependency graph");
+            getLog().debug("================");
+            print(listener.getRootNode());
+            getLog().debug("================");
+        }
+        return listener;
+    }
+
+    protected Map createManagedVersionMap(String projectId,
+            DependencyManagement dependencyManagement) throws ProjectBuildingException {
+        Map map;
+        if (dependencyManagement != null
+                && dependencyManagement.getDependencies() != null) {
+            map = new HashMap();
+            for (Iterator i = dependencyManagement.getDependencies().iterator(); i
+                    .hasNext();) {
+                Dependency d = (Dependency) i.next();
+
+                try {
+                    VersionRange versionRange = VersionRange
+                            .createFromVersionSpec(d.getVersion());
+                    Artifact artifact = factory.createDependencyArtifact(d
+                            .getGroupId(), d.getArtifactId(), versionRange, d
+                            .getType(), d.getClassifier(), d.getScope());
+                    map.put(d.getManagementKey(), artifact);
+                } catch (InvalidVersionSpecificationException e) {
+                    throw new ProjectBuildingException(projectId,
+                            "Unable to parse version '" + d.getVersion()
+                                    + "' for dependency '"
+                                    + d.getManagementKey() + "': "
+                                    + e.getMessage(), e);
+                }
+            }
+        } else {
+            map = Collections.EMPTY_MAP;
+        }
+        return map;
+    }
+
+    /**
+     * Set up a classloader for the execution of the main class.
+     *
+     * @return
+     * @throws MojoExecutionException
+     */
+    protected URLClassLoader getClassLoader() throws MojoExecutionException {
+        try {
+            Set urls = new HashSet();
+
+            URL mainClasses = new File(project.getBuild().getOutputDirectory())
+                    .toURL();
+            getLog().debug("Adding to classpath : " + mainClasses);
+            urls.add(mainClasses);
+
+            URL testClasses = new File(project.getBuild()
+                    .getTestOutputDirectory()).toURL();
+            getLog().debug("Adding to classpath : " + testClasses);
+            urls.add(testClasses);
+
+            Set dependencies = project.getArtifacts();
+            Iterator iter = dependencies.iterator();
+            while (iter.hasNext()) {
+                Artifact classPathElement = (Artifact) iter.next();
+                getLog().debug(
+                        "Adding artifact: " + classPathElement.getFile()
+                                + " to classpath");
+                urls.add(classPathElement.getFile().toURL());
+            }
+            URLClassLoader appClassloader = new URLClassLoader((URL[]) urls
+                    .toArray(new URL[urls.size()]), this.getClass().getClassLoader());
+            return appClassloader;
+        } catch (MalformedURLException e) {
+            throw new MojoExecutionException(
+                    "Error during setting up classpath", e);
+        }
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/Node.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/Node.java
new file mode 100644
index 0000000..18fe8bc
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/Node.java
@@ -0,0 +1,56 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.util.Set;
+import java.util.HashSet;
+
+import org.apache.maven.artifact.Artifact;
+
+/**
+ * @version $Revision: 1.1 $
+*/
+public class Node {
+    private Set children = new HashSet();
+    private Set parents = new HashSet();
+    private Artifact artifact;
+
+    public Set getChildren() {
+        return children;
+    }
+
+    public Artifact getArtifact() {
+        return artifact;
+    }
+
+    public Set getParents() {
+        return parents;
+    }
+
+    public void setChildren(Set children) {
+        this.children = children;
+    }
+
+    public void setParents(Set parents) {
+        this.parents = parents;
+    }
+
+    public void setArtifact(Artifact artifact) {
+        this.artifact = artifact;
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/ResolutionListenerImpl.java b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/ResolutionListenerImpl.java
new file mode 100644
index 0000000..c43dff2
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/java/org/apache/felix/karaf/tooling/features/ResolutionListenerImpl.java
@@ -0,0 +1,161 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Stack;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.resolver.ResolutionListener;
+import org.apache.maven.artifact.versioning.VersionRange;
+import org.apache.maven.plugin.logging.Log;
+
+/**
+ * @author Edwin Punzalan
+ * @version $Revision: 1.1 $
+ */
+public class ResolutionListenerImpl implements ResolutionListener {
+    private Stack parents = new Stack();
+    private Map artifacts = new HashMap();
+    private Node rootNode;
+    private Log log;
+
+    public void setLog(Log log) {
+        this.log = log;
+    }
+
+    public Log getLog() {
+        return log;
+    }
+
+    public void testArtifact(Artifact artifact) {
+        // getLog().debug("testArtifact: " + artifact);
+        // intentionally blank
+    }
+
+    public void startProcessChildren(Artifact artifact) {
+        // getLog().debug("startProcessChildren: " + artifact);
+        Node node = (Node) artifacts.get(artifact.getDependencyConflictId());
+        if (parents.isEmpty()) {
+            rootNode = node;
+        }
+        parents.push(node);
+    }
+
+    public void endProcessChildren(Artifact artifact) {
+        // getLog().debug("endProcessChildren: " + artifact);
+        Node check = (Node) parents.pop();
+        assert artifact.equals(check.getArtifact());
+    }
+
+    public void omitForNearer(Artifact omitted, Artifact kept) {
+        // getLog().debug("omitForNearer: omitted=" + omitted + ", kept=" +
+        // kept);
+        assert omitted.getDependencyConflictId().equals(
+                kept.getDependencyConflictId());
+        Node node = (Node) artifacts.get(omitted.getDependencyConflictId());
+        assert node != null;
+        node.setArtifact(kept);
+    }
+
+    public void omitForCycle(Artifact artifact) {
+        // getLog().debug("omitForCycle: " + artifact);
+        // intentionally blank
+    }
+
+    public void includeArtifact(Artifact artifact) {
+        // getLog().debug("includeArtifact: " + artifact);
+        Node node = (Node) artifacts.get(artifact.getDependencyConflictId());
+        if (node == null) {
+            node = new Node();
+            artifacts.put(artifact.getDependencyConflictId(), node);
+        }
+        node.setArtifact(artifact);
+        if (!parents.isEmpty()) {
+            Node parent = (Node) parents.peek();
+            parent.getChildren().add(node);
+            node.getParents().add(parent);
+        }
+        if (rootNode != null) {
+            // print(rootNode, "");
+        }
+    }
+
+    protected void print(Node node, String string) {
+        // getLog().debug(string + rootNode.getArtifact());
+        for (Iterator iter = node.getChildren().iterator(); iter.hasNext();) {
+            Node n = (Node) iter.next();
+            print(n, string + "  ");
+        }
+    }
+
+    public void updateScope(Artifact artifact, String scope) {
+        // getLog().debug("updateScope: " + artifact);
+        Node node = (Node) artifacts.get(artifact.getDependencyConflictId());
+
+        node.getArtifact().setScope(scope);
+    }
+
+    public void manageArtifact(Artifact artifact, Artifact replacement) {
+        // getLog().debug("manageArtifact: artifact=" + artifact + ",
+        // replacement=" + replacement);
+        Node node = (Node) artifacts.get(artifact.getDependencyConflictId());
+        if (node != null) {
+            if (replacement.getVersion() != null) {
+                node.getArtifact().setVersion(replacement.getVersion());
+            }
+            if (replacement.getScope() != null) {
+                node.getArtifact().setScope(replacement.getScope());
+            }
+        }
+    }
+
+    public void updateScopeCurrentPom(Artifact artifact, String key) {
+
+        getLog().debug("updateScopeCurrentPom: " + artifact);
+        // intentionally blank
+    }
+
+    public void selectVersionFromRange(Artifact artifact) {
+
+        getLog().debug("selectVersionFromRange: " + artifact);
+        // intentionally blank
+    }
+
+    public void restrictRange(Artifact artifact, Artifact artifact1,
+            VersionRange versionRange) {
+
+        getLog().debug("restrictRange: " + artifact);
+        // intentionally blank
+    }
+
+    public Node getNode(Artifact artifact) {
+        return (Node) artifacts.get(artifact.getDependencyConflictId());
+    }
+
+    public Collection getArtifacts() {
+        return artifacts.values();
+    }
+
+    public Node getRootNode() {
+        return rootNode;
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/main/resources/config.properties b/karaf/tooling/features-maven-plugin/src/main/resources/config.properties
new file mode 100644
index 0000000..96597f2
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/main/resources/config.properties
@@ -0,0 +1,127 @@
+jre-1.5= \
+ javax.accessibility; \
+ javax.activity; \
+ javax.crypto; \
+ javax.crypto.interfaces; \
+ javax.crypto.spec; \
+ javax.imageio; \
+ javax.imageio.event; \
+ javax.imageio.metadata; \
+ javax.imageio.plugins.bmp; \
+ javax.imageio.plugins.jpeg; \
+ javax.imageio.spi; \
+ javax.imageio.stream; \
+ javax.management; \
+ javax.management.loading; \
+ javax.management.modelmbean; \
+ javax.management.monitor; \
+ javax.management.openmbean; \
+ javax.management.relation; \
+ javax.management.remote; \
+ javax.management.remote.rmi; \
+ javax.management.timer; \
+ javax.naming; \
+ javax.naming.directory; \
+ javax.naming.event; \
+ javax.naming.ldap; \
+ javax.naming.spi; \
+ javax.net; \
+ javax.net.ssl; \
+ javax.print; \
+ javax.print.attribute; \
+ javax.print.attribute.standard; \
+ javax.print.event; \
+ javax.rmi; \
+ javax.rmi.CORBA; \
+ javax.rmi.ssl; \
+ javax.security.auth; \
+ javax.security.auth.callback; \
+ javax.security.auth.kerberos; \
+ javax.security.auth.login; \
+ javax.security.auth.spi; \
+ javax.security.auth.x500; \
+ javax.security.cert; \
+ javax.security.sasl; \
+ javax.sound.midi; \
+ javax.sound.midi.spi; \
+ javax.sound.sampled; \
+ javax.sound.sampled.spi; \
+ javax.sql; \
+ javax.sql.rowset; \
+ javax.sql.rowset.serial; \
+ javax.sql.rowset.spi; \
+ javax.swing; \
+ javax.swing.border; \
+ javax.swing.colorchooser; \
+ javax.swing.event; \
+ javax.swing.filechooser; \
+ javax.swing.plaf; \
+ javax.swing.plaf.basic; \
+ javax.swing.plaf.metal; \
+ javax.swing.plaf.multi; \
+ javax.swing.plaf.synth; \
+ javax.swing.table; \
+ javax.swing.text; \
+ javax.swing.text.html; \
+ javax.swing.text.html.parser; \
+ javax.swing.text.rtf; \
+ javax.swing.tree; \
+ javax.swing.undo; \
+ javax.xml; \
+ javax.xml.datatype; \
+ javax.xml.namespace; \
+ javax.xml.parsers; \
+ javax.xml.transform; \
+ javax.xml.transform.dom; \
+ javax.xml.transform.sax; \
+ javax.xml.transform.stream; \
+ javax.xml.validation; \
+ javax.xml.xpath; \
+ org.ietf.jgss; \
+ org.omg.CORBA; \
+ org.omg.CORBA_2_3; \
+ org.omg.CORBA_2_3.portable; \
+ org.omg.CORBA.DynAnyPackage; \
+ org.omg.CORBA.ORBPackage; \
+ org.omg.CORBA.portable; \
+ org.omg.CORBA.TypeCodePackage; \
+ org.omg.CosNaming; \
+ org.omg.CosNaming.NamingContextExtPackage; \
+ org.omg.CosNaming.NamingContextPackage; \
+ org.omg.Dynamic; \
+ org.omg.DynamicAny; \
+ org.omg.DynamicAny.DynAnyFactoryPackage; \
+ org.omg.DynamicAny.DynAnyPackage; \
+ org.omg.IOP; \
+ org.omg.IOP.CodecFactoryPackage; \
+ org.omg.IOP.CodecPackage; \
+ org.omg.Messaging; \
+ org.omg.PortableInterceptor; \
+ org.omg.PortableInterceptor.ORBInitInfoPackage; \
+ org.omg.PortableServer; \
+ org.omg.PortableServer.CurrentPackage; \
+ org.omg.PortableServer.POAManagerPackage; \
+ org.omg.PortableServer.POAPackage; \
+ org.omg.PortableServer.portable; \
+ org.omg.PortableServer.ServantLocatorPackage; \
+ org.omg.SendingContext; \
+ org.omg.stub.java.rmi; \
+ org.omg.stub.javax.management.remote.rmi; \
+ org.w3c.dom; \
+ org.w3c.dom.bootstrap; \
+ org.w3c.dom.css; \
+ org.w3c.dom.events; \
+ org.w3c.dom.html; \
+ org.w3c.dom.ls; \
+ org.w3c.dom.ranges; \
+ org.w3c.dom.stylesheets; \
+ org.w3c.dom.traversal; \
+ org.w3c.dom.views; \
+ org.xml.sax; \
+ org.xml.sax.ext; \
+ org.xml.sax.helpers; \
+ sun.misc; \
+ sun.reflect
+ 
+osgi= \
+ org.osgi.framework;
diff --git a/karaf/tooling/features-maven-plugin/src/test/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesFileMojoTest.java b/karaf/tooling/features-maven-plugin/src/test/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesFileMojoTest.java
new file mode 100644
index 0000000..5b0517a
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/test/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesFileMojoTest.java
@@ -0,0 +1,105 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import org.apache.maven.artifact.Artifact;
+import org.apache.maven.artifact.metadata.ArtifactMetadataRetrievalException;
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
+import org.jmock.Expectations;
+import org.jmock.Mockery;
+
+/**
+ * Test cases for {@link GenerateFeaturesFileMojo} 
+ */
+public class GenerateFeaturesFileMojoTest extends TestCase {
+    
+    private Mockery mockery;
+    private GenerateFeaturesFileMojo mojo;
+    
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        mojo = new GenerateFeaturesFileMojo();
+        mockery = new Mockery();
+    }
+    
+    public void testGetBestVersionForArtifactWithOneVersion() throws Exception {       
+        final Artifact artifact = mockery.mock(Artifact.class);
+        mockery.checking(new Expectations() {{
+            allowing(artifact).getVersion(); will(returnValue("2.1.6"));
+        }});
+
+        assertEquals("2.1.6_1-SNAPSHOT", mojo.getBestVersionForArtifact(artifact, createVersionList("2.1.6_1-SNAPSHOT")));
+    }
+    
+    public void testGetBestVersionForArtifactWithTwoVersions() throws Exception {       
+        final Artifact artifact = mockery.mock(Artifact.class);
+        mockery.checking(new Expectations() {{
+            allowing(artifact).getVersion(); will(returnValue("2.1.6"));
+        }});
+
+        assertEquals("2.1.6_2-SNAPSHOT", mojo.getBestVersionForArtifact(artifact, createVersionList("2.1.6_1-SNAPSHOT", "2.1.6_2-SNAPSHOT")));
+    }
+    
+    public void testGetBestVersionForArtifactWithSameMajorMinor() throws Exception {       
+        final Artifact artifact = mockery.mock(Artifact.class);
+        mockery.checking(new Expectations() {{
+            allowing(artifact).getVersion(); will(returnValue("3.8.2"));
+        }});
+
+        assertEquals("3.8.1_1-SNAPSHOT", mojo.getBestVersionForArtifact(artifact, createVersionList("3.8.1_1-SNAPSHOT")));
+    }
+
+    
+    public void testGetBestVersionForArtifactWithOneNonMatchingVersion() throws Exception {
+        final Artifact artifact = mockery.mock(Artifact.class);
+        mockery.checking(new Expectations() {{
+            allowing(artifact).getVersion(); will(returnValue("9.1.0.1"));
+        }});
+        
+        try {
+            mojo.getBestVersionForArtifact(artifact, createVersionList("9.0_1-SNAPSHOT"));
+            fail("ArtifactMetadataRetrievalException should have been thrown if no matching version was found");
+        } catch (ArtifactMetadataRetrievalException e) {
+            // this is expected
+        }
+    }
+    
+    public void testGetBestVersionForArtifactWithNoVersions() throws Exception {
+        try {
+            mojo.getBestVersionForArtifact(mockery.mock(Artifact.class), createVersionList());
+            fail("ArtifactMetadataRetrievalException should have been thrown if no matching version was found");
+        } catch (ArtifactMetadataRetrievalException e) {
+            // this is expected
+        }
+    }
+    
+    private List<ArtifactVersion> createVersionList(String... versions) {
+        List<ArtifactVersion> results = new ArrayList<ArtifactVersion>();
+        for (final String version : versions) {
+            results.add(new DefaultArtifactVersion(version));
+        }
+        return results;
+    }
+}
diff --git a/karaf/tooling/features-maven-plugin/src/test/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesXmlMojoTest.java b/karaf/tooling/features-maven-plugin/src/test/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesXmlMojoTest.java
new file mode 100644
index 0000000..cd96711
--- /dev/null
+++ b/karaf/tooling/features-maven-plugin/src/test/java/org/apache/felix/karaf/tooling/features/GenerateFeaturesXmlMojoTest.java
@@ -0,0 +1,48 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.felix.karaf.tooling.features;
+
+import org.apache.maven.artifact.Artifact;
+import org.jmock.Expectations;
+import org.jmock.Mockery;
+
+import junit.framework.TestCase;
+
+/**
+ * Test cases for {@link GenerateFeaturesXmlMojo}
+ */
+public class GenerateFeaturesXmlMojoTest extends TestCase {
+    
+    private Mockery mockery;
+    
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        mockery = new Mockery();
+    }
+    
+    public void testToString() throws Exception {
+        final Artifact artifact = mockery.mock(Artifact.class);
+        mockery.checking(new Expectations() {{
+            allowing(artifact).getGroupId(); will(returnValue("org.apache.servicemix.test"));
+            allowing(artifact).getArtifactId(); will(returnValue("test-artifact"));
+            allowing(artifact).getVersion(); will(returnValue("1.2.3"));
+        }});
+        assertEquals("org.apache.servicemix.test/test-artifact/1.2.3", GenerateFeaturesXmlMojo.toString(artifact));
+    }
+
+}