A new example application with a set of services. These set of bundles
implement a very simple drawing program based on services. The application
bundle can be run as a bundle or a stand-alone application.
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@556053 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/Activator.java b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/Activator.java
new file mode 100644
index 0000000..8fae5d9
--- /dev/null
+++ b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/Activator.java
@@ -0,0 +1,197 @@
+/*
+ * 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.example.servicebased.host;
+
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import javax.swing.*;
+
+import org.osgi.framework.*;
+import org.apache.felix.framework.Felix;
+import org.apache.felix.framework.util.FelixConstants;
+import org.apache.felix.framework.util.StringMap;
+import org.apache.felix.framework.cache.BundleCache;
+
+/**
+ * The activator of the host application bundle. The activator creates the
+ * main application <tt>JFrame</tt> and starts tracking <tt>SimpleShape</tt>
+ * services. All activity is performed on the Swing event thread to avoid
+ * synchronization and repainting issues. Closing the application window
+ * will result in <tt>Bundle.stop()</tt> being called on the system bundle,
+ * which will cause the framework to shutdown and the JVM to exit.
+ * <p>
+ * This class also provides a static <tt>main()</tt> method so that it can be
+ * run as a stand-alone host application. In such a scenario, the application
+ * creates its own embedded Felix framework instance and interacts with the
+ * internal services to providing drawing functionality. To successfully
+ * launch the stand-alone application, it must be run from this bundle's
+ * installation directory using "<tt>java -jar</tt>".
+**/
+public class Activator implements BundleActivator, Runnable
+{
+ private BundleContext m_context = null;
+ private DrawingFrame m_frame = null;
+ private ShapeTracker m_shapetracker = null;
+
+ /**
+ * Displays the applications window and starts service tracking;
+ * everything is done on the Swing event thread to avoid synchronization
+ * and repainting issues.
+ * @param context The context of the bundle.
+ **/
+ public void start(BundleContext context)
+ {
+ m_context = context;
+ if (SwingUtilities.isEventDispatchThread())
+ {
+ run();
+ }
+ else
+ {
+ try
+ {
+ javax.swing.SwingUtilities.invokeAndWait(this);
+ }
+ catch (Exception ex)
+ {
+ ex.printStackTrace();
+ }
+ }
+ }
+
+ /**
+ * Stops service tracking and disposes of the application window.
+ * @param context The context of the bundle.
+ **/
+ public void stop(BundleContext context)
+ {
+ m_shapetracker.close();
+ m_frame.setVisible(false);
+ m_frame.dispose();
+ }
+
+ /**
+ * This method actually performs the creation of the application window.
+ * It is intended to be called by the Swing event thread and should not
+ * be called directly.
+ **/
+ public void run()
+ {
+ m_frame = new DrawingFrame();
+
+ m_frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
+ m_frame.addWindowListener(new WindowAdapter() {
+ public void windowClosing(WindowEvent evt)
+ {
+ try
+ {
+ m_context.getBundle(0).stop();
+ }
+ catch (BundleException ex)
+ {
+ ex.printStackTrace();
+ }
+ }
+ });
+
+ m_frame.setVisible(true);
+
+ m_shapetracker = new ShapeTracker(m_context, m_frame);
+ m_shapetracker.open();
+ }
+
+ /**
+ * Enables the bundle to run as a stand-alone application. When this
+ * static <tt>main()</tt> method is invoked, the application creates
+ * its own embedded Felix framework instance and interacts with the
+ * internal services to providing drawing functionality. To successfully
+ * launch as a stand-alone application, the method should be invoked from
+ * the bundle's installation directory using "<tt>java -jar</tt>".
+ * @param argv The command-line arguments.
+ * @throws Exception If anything goes wrong.
+ **/
+ public static void main(String[] argv) throws Exception
+ {
+ // Create a temporary bundle cache directory and
+ // make sure to clean it up on exit.
+ final File cachedir = File.createTempFile("felix.example", null);
+ cachedir.delete();
+ Runtime.getRuntime().addShutdownHook(new Thread() {
+ public void run()
+ {
+ deleteFileOrDir(cachedir);
+ }
+ });
+
+ Map configMap = new StringMap(false);
+ configMap.put(Constants.FRAMEWORK_SYSTEMPACKAGES,
+ "org.osgi.framework; version=1.3.0," +
+ "org.osgi.service.packageadmin; version=1.2.0," +
+ "org.osgi.service.startlevel; version=1.0.0," +
+ "org.osgi.service.url; version=1.0.0," +
+ "org.osgi.util.tracker; version=1.3.2," +
+ "org.apache.felix.example.servicebased.host.service; version=1.0.0," +
+ "javax.swing");
+ configMap.put(FelixConstants.AUTO_START_PROP + ".1",
+ "file:../servicebased.circle/target/servicebased.circle-1.0.0.jar " +
+ "file:../servicebased.square/target/servicebased.square-1.0.0.jar " +
+ "file:../servicebased.triangle/target/servicebased.triangle-1.0.0.jar");
+ configMap.put(FelixConstants.LOG_LEVEL_PROP, "1");
+ configMap.put(BundleCache.CACHE_PROFILE_DIR_PROP, cachedir.getAbsolutePath());
+
+ List list = new ArrayList();
+ list.add(new Activator());
+
+ try
+ {
+ // Now create an instance of the framework.
+ Felix felix = new Felix(configMap, list);
+ felix.start();
+ }
+ catch (Exception ex)
+ {
+ System.err.println("Could not create framework: " + ex);
+ ex.printStackTrace();
+ System.exit(-1);
+ }
+ }
+
+ /**
+ * Utility method used to delete the profile directory when run as
+ * a stand-alone application.
+ * @param file The file to recursively delete.
+ **/
+ private static void deleteFileOrDir(File file)
+ {
+ if (file.isDirectory())
+ {
+ File[] childs = file.listFiles();
+ for (int i = 0;i < childs.length;i++)
+ {
+ deleteFileOrDir(childs[i]);
+ }
+ }
+ file.delete();
+ }
+}
\ No newline at end of file
diff --git a/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/DrawingFrame.java b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/DrawingFrame.java
new file mode 100644
index 0000000..29d1d59
--- /dev/null
+++ b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/DrawingFrame.java
@@ -0,0 +1,230 @@
+/*
+ * 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.example.servicebased.host;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.util.*;
+
+import javax.swing.*;
+
+import org.apache.felix.example.servicebased.host.service.SimpleShape;
+
+public class DrawingFrame extends JFrame
+ implements MouseListener, MouseMotionListener
+{
+ private static final long serialVersionUID = 1L;
+ private static final int BOX = 54;
+ private JToolBar m_toolbar;
+ private String m_selected;
+ private JPanel m_panel;
+ private Map m_shapes = new HashMap();
+ private ShapeComponent m_selectedComponent;
+ private SimpleShape m_defaultShape = new DefaultShape();
+ private ActionListener m_reusableActionListener = new ShapeActionListener();
+
+ public DrawingFrame()
+ {
+ super("Service-Based Host");
+
+ m_toolbar = new JToolBar("Toolbar");
+ m_panel = new JPanel();
+ m_panel.setBackground(Color.WHITE);
+ m_panel.setLayout(null);
+ m_panel.setMinimumSize(new Dimension(400, 400));
+ m_panel.addMouseListener(this);
+ getContentPane().setLayout(new BorderLayout());
+ getContentPane().add(m_toolbar, BorderLayout.NORTH);
+ getContentPane().add(m_panel, BorderLayout.CENTER);
+ setSize(400, 400);
+ }
+
+ public void selectShape(String name)
+ {
+ m_selected = name;
+ }
+
+ public SimpleShape getShape(String name)
+ {
+ ShapeInfo info = (ShapeInfo) m_shapes.get(name);
+ if (info == null)
+ {
+ return m_defaultShape;
+ }
+ else
+ {
+ return info.m_shape;
+ }
+ }
+
+ public void addShape(String name, Icon icon, SimpleShape shape)
+ {
+ m_shapes.put(name, new ShapeInfo(name, icon, shape));
+ JButton button = new JButton(icon);
+ button.setActionCommand(name);
+ button.addActionListener(m_reusableActionListener);
+
+ if (m_selected == null)
+ {
+ button.doClick();
+ }
+
+ m_toolbar.add(button);
+ m_toolbar.validate();
+ repaint();
+ }
+
+ public void removeShape(String name)
+ {
+ m_shapes.remove(name);
+
+ if ((m_selected != null) && m_selected.equals(name))
+ {
+ m_selected = null;
+ }
+
+ for (int i = 0; i < m_toolbar.getComponentCount(); i++)
+ {
+ JButton sb = (JButton) m_toolbar.getComponent(i);
+ if (sb.getActionCommand().equals(name))
+ {
+ m_toolbar.remove(i);
+ m_toolbar.invalidate();
+ validate();
+ repaint();
+ break;
+ }
+ }
+
+ if ((m_selected == null) && (m_toolbar.getComponentCount() > 0))
+ {
+ ((JButton) m_toolbar.getComponent(0)).doClick();
+ }
+ }
+
+ public void mouseClicked(MouseEvent evt)
+ {
+ if (m_selected == null)
+ {
+ return;
+ }
+
+ if (m_panel.contains(evt.getX(), evt.getY()))
+ {
+ ShapeComponent sc = new ShapeComponent(this, m_selected);
+ sc.setBounds(evt.getX() - BOX / 2, evt.getY() - BOX / 2, BOX, BOX);
+ m_panel.add(sc, 0);
+ m_panel.validate();
+ m_panel.repaint(sc.getBounds());
+ }
+ }
+
+ public void mouseEntered(MouseEvent evt)
+ {
+ }
+
+ public void mouseExited(MouseEvent evt)
+ {
+ }
+
+ public void mousePressed(MouseEvent evt)
+ {
+ Component c = m_panel.getComponentAt(evt.getPoint());
+ if (c instanceof ShapeComponent)
+ {
+ m_selectedComponent = (ShapeComponent) c;
+ m_panel.setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
+ m_panel.addMouseMotionListener(this);
+ m_selectedComponent.repaint();
+ }
+ }
+
+ public void mouseReleased(MouseEvent evt)
+ {
+ if (m_selectedComponent != null)
+ {
+ m_panel.removeMouseMotionListener(this);
+ m_panel.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
+ m_selectedComponent.setBounds(
+ evt.getX() - BOX / 2, evt.getY() - BOX / 2, BOX, BOX);
+ m_selectedComponent.repaint();
+ m_selectedComponent = null;
+ }
+ }
+
+ public void mouseDragged(MouseEvent evt)
+ {
+ m_selectedComponent.setBounds(
+ evt.getX() - BOX / 2, evt.getY() - BOX / 2, BOX, BOX);
+ }
+
+ public void mouseMoved(MouseEvent evt)
+ {
+ }
+
+ private class DefaultShape implements SimpleShape
+ {
+ private ImageIcon m_icon = null;
+
+ public void draw(Graphics2D g2, Point p)
+ {
+ if (m_icon == null)
+ {
+ try
+ {
+ m_icon = new ImageIcon(this.getClass().getResource("underc.png"));
+ }
+ catch (Exception ex)
+ {
+ ex.printStackTrace();
+ g2.setColor(Color.red);
+ g2.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
+ return;
+ }
+ }
+ g2.drawImage(m_icon.getImage(), 0, 0, null);
+ }
+
+ public String getName()
+ {
+ return "Default";
+ }
+ }
+
+ private class ShapeActionListener implements ActionListener
+ {
+ public void actionPerformed(ActionEvent evt)
+ {
+ selectShape(evt.getActionCommand());
+ }
+ }
+
+ private static class ShapeInfo
+ {
+ public String m_name;
+ public Icon m_icon;
+ public SimpleShape m_shape;
+ public ShapeInfo(String name, Icon icon, SimpleShape shape)
+ {
+ m_name = name;
+ m_icon = icon;
+ m_shape = shape;
+ }
+ }
+}
\ No newline at end of file
diff --git a/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/ShapeComponent.java b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/ShapeComponent.java
new file mode 100644
index 0000000..fbeca54
--- /dev/null
+++ b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/ShapeComponent.java
@@ -0,0 +1,66 @@
+/*
+ * 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.example.servicebased.host;
+
+import java.awt.*;
+
+import javax.swing.*;
+
+import org.apache.felix.example.servicebased.host.service.SimpleShape;
+
+/**
+ * Simple component class used to represent a drawn shape. This component
+ * uses a shape service to paint its contents.
+**/
+public class ShapeComponent extends JComponent
+{
+ private static final long serialVersionUID = 1L;
+ private DrawingFrame m_frame;
+ private String m_shapeName;
+
+ /**
+ * Construct a component for the specified drawing frame with the specified
+ * named shape. The component acquires the named shape from the drawing
+ * frame at the time of painting, which enables it to account for
+ * service dynamism.
+ * @param frame The drawing frame associated with the component.
+ * @param shapeName The name of the shape to draw.
+ **/
+ public ShapeComponent(DrawingFrame frame, String shapeName)
+ {
+ m_frame = frame;
+ m_shapeName = shapeName;
+ }
+
+ /**
+ * Paints the contents of the component. The component acquires the named
+ * shape from the drawing frame at the time of painting, which enables it
+ * to account for service dynamism.
+ * @param g The graphics object to use for painting.
+ **/
+ protected void paintComponent(Graphics g)
+ {
+ super.paintComponent(g);
+ Graphics2D g2 = (Graphics2D) g;
+ g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+ RenderingHints.VALUE_ANTIALIAS_ON);
+ SimpleShape shape = m_frame.getShape(m_shapeName);
+ shape.draw(g2, new Point(getWidth()/2, getHeight()/2));
+ }
+}
\ No newline at end of file
diff --git a/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/ShapeTracker.java b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/ShapeTracker.java
new file mode 100644
index 0000000..ff97a85
--- /dev/null
+++ b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/ShapeTracker.java
@@ -0,0 +1,186 @@
+/*
+ * 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.example.servicebased.host;
+
+import javax.swing.*;
+
+import org.apache.felix.example.servicebased.host.service.SimpleShape;
+import org.osgi.framework.*;
+import org.osgi.util.tracker.*;
+
+/**
+ * Extends the <tt>ServiceTracker</tt> to create a tracker for
+ * <tt>SimpleShape</tt> services. The tracker is responsible for
+ * listener for the arrival/departure of <tt>SimpleShape</tt>
+ * services and informing the application about the availability
+ * of shapes. This tracker forces all notifications to be processed
+ * on the Swing event thread to avoid synchronization and redraw
+ * issues.
+**/
+public class ShapeTracker extends ServiceTracker
+{
+ // Flag indicating an added shape.
+ private static final int ADDED = 1;
+ // Flag indicating a modified shape.
+ private static final int MODIFIED = 2;
+ // Flag indicating a removed shape.
+ private static final int REMOVED = 3;
+ // The application object to notify.
+ private DrawingFrame m_frame;
+
+ /**
+ * Constructs a tracker that uses the specified bundle context to
+ * track services and notifies the specified application object about
+ * changes.
+ * @param context The bundle context to be used by the tracker.
+ * @param frame The application object to notify about service changes.
+ **/
+ public ShapeTracker(BundleContext context, DrawingFrame frame)
+ {
+ super(context, SimpleShape.class.getName(), null);
+ m_frame = frame;
+ }
+
+ /**
+ * Overrides the <tt>ServiceTracker</tt> functionality to inform
+ * the application object about the added service.
+ * @param ref The service reference of the added service.
+ * @return The service object to be used by the tracker.
+ **/
+ public Object addingService(ServiceReference ref)
+ {
+ SimpleShape shape = (SimpleShape) super.addingService(ref);
+ processShapeOnEventThread(ADDED, ref, shape);
+ return shape;
+ }
+
+ /**
+ * Overrides the <tt>ServiceTracker</tt> functionality to inform
+ * the application object about the modified service.
+ * @param ref The service reference of the modified service.
+ * @param svc The service object of the modified service.
+ **/
+ public void modifiedService(ServiceReference ref, Object svc)
+ {
+ processShapeOnEventThread(MODIFIED, ref, (SimpleShape) svc);
+ }
+
+ /**
+ * Overrides the <tt>ServiceTracker</tt> functionality to inform
+ * the application object about the removed service.
+ * @param ref The service reference of the removed service.
+ * @param svc The service object of the removed service.
+ **/
+ public void removedService(ServiceReference ref, Object svc)
+ {
+ processShapeOnEventThread(REMOVED, ref, (SimpleShape) svc);
+ super.removedService(ref, svc);
+ }
+
+ /**
+ * Processes a received service notification from the <tt>ServiceTracker</tt>,
+ * forcing the processing of the notification onto the Swing event thread
+ * if it is not already on it.
+ * @param action The type of action associated with the notification.
+ * @param ref The service reference of the corresponding service.
+ * @param shape The service object of the corresponding service.
+ **/
+ private void processShapeOnEventThread(
+ int action, ServiceReference ref, SimpleShape shape)
+ {
+ try
+ {
+ if (SwingUtilities.isEventDispatchThread())
+ {
+ processShape(action, ref, shape);
+ }
+ else
+ {
+ SwingUtilities.invokeAndWait(new ShapeRunnable(action, ref, shape));
+ }
+ }
+ catch (Exception ex)
+ {
+ ex.printStackTrace();
+ }
+ }
+
+ /**
+ * Actually performs the processing of the service notification. Invokes
+ * the appropriate callback method on the application object depending on
+ * the action type of the notification.
+ * @param action The type of action associated with the notification.
+ * @param ref The service reference of the corresponding service.
+ * @param shape The service object of the corresponding service.
+ **/
+ private void processShape(int action, ServiceReference ref, SimpleShape shape)
+ {
+ String name = (String) ref.getProperty(SimpleShape.NAME_PROPERTY);
+
+ switch (action)
+ {
+ case MODIFIED:
+ m_frame.removeShape(name);
+ // Purposely let this fall through to the 'add' case to
+ // reload the service.
+
+ case ADDED:
+ Icon icon = (Icon) ref.getProperty(SimpleShape.ICON_PROPERTY);
+ m_frame.addShape(name, icon, shape);
+ break;
+
+ case REMOVED:
+ m_frame.removeShape(name);
+ break;
+ }
+ }
+
+ /**
+ * Simple class used to process service notification handling on the
+ * Swing event thread.
+ **/
+ private class ShapeRunnable implements Runnable
+ {
+ private int m_action;
+ private ServiceReference m_ref;
+ private SimpleShape m_shape;
+
+ /**
+ * Constructs an object with the specified action, service reference,
+ * and service object for processing on the Swing event thread.
+ * @param action The type of action associated with the notification.
+ * @param ref The service reference of the corresponding service.
+ * @param shape The service object of the corresponding service.
+ **/
+ public ShapeRunnable(int action, ServiceReference ref, SimpleShape shape)
+ {
+ m_action = action;
+ m_ref = ref;
+ m_shape = shape;
+ }
+
+ /**
+ * Calls the <tt>processShape()</tt> method.
+ **/
+ public void run()
+ {
+ processShape(m_action, m_ref, m_shape);
+ }
+ }
+}
\ No newline at end of file
diff --git a/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/service/SimpleShape.java b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/service/SimpleShape.java
new file mode 100644
index 0000000..c1a9b78
--- /dev/null
+++ b/examples/servicebased.host/src/main/java/org/apache/felix/example/servicebased/host/service/SimpleShape.java
@@ -0,0 +1,51 @@
+/*
+ * 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.example.servicebased.host.service;
+
+import java.awt.Graphics2D;
+import java.awt.Point;
+
+/**
+ * This interface defines the <tt>SimpleShape</tt> service. This service
+ * is used to draw shapes. It has two service properties:
+ * <ul>
+ * <li>simple.shape.name - A <tt>String</tt> name for the shape.
+ * </li>
+ * <li>simple.shape.icon - A <tt>Icon</tt> for the shape.
+ * </li>
+ * </ul>
+**/
+public interface SimpleShape
+{
+ /**
+ * A service property for the name of the shape.
+ **/
+ public static final String NAME_PROPERTY = "simple.shape.name";
+ /**
+ * A service property for the icon of the shape.
+ **/
+ public static final String ICON_PROPERTY = "simple.shape.icon";
+
+ /**
+ * Method to draw the shape of the service.
+ * @param g2 The graphics object used for painting.
+ * @param p The position to paint the triangle.
+ **/
+ public void draw(Graphics2D g2, Point p);
+}
\ No newline at end of file
diff --git a/examples/servicebased.host/src/main/resources/META-INF/LICENSE b/examples/servicebased.host/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/examples/servicebased.host/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,202 @@
+
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+ (a) You must give any other recipients of the Work or
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+ (b) You must cause any modified files to carry prominent notices
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
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+ Notwithstanding the above, nothing herein shall supersede or modify
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diff --git a/examples/servicebased.host/src/main/resources/META-INF/NOTICE b/examples/servicebased.host/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000..459d669
--- /dev/null
+++ b/examples/servicebased.host/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,5 @@
+Apache Felix Shell Service
+Copyright 2006 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
diff --git a/examples/servicebased.host/src/main/resources/org/apache/felix/example/servicebased/host/underc.png b/examples/servicebased.host/src/main/resources/org/apache/felix/example/servicebased/host/underc.png
new file mode 100644
index 0000000..425cdb9
--- /dev/null
+++ b/examples/servicebased.host/src/main/resources/org/apache/felix/example/servicebased/host/underc.png
Binary files differ
