diff --git a/ipojo/temporal.dependency.handler/src/main/java/org/apache/felix/ipojo/handler/temporal/TemporalDependency.java b/ipojo/temporal.dependency.handler/src/main/java/org/apache/felix/ipojo/handler/temporal/TemporalDependency.java
new file mode 100644
index 0000000..5b3c853
--- /dev/null
+++ b/ipojo/temporal.dependency.handler/src/main/java/org/apache/felix/ipojo/handler/temporal/TemporalDependency.java
@@ -0,0 +1,154 @@
+/* 
+ * 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.ipojo.handler.temporal;
+
+import java.lang.reflect.Array;
+
+import org.apache.felix.ipojo.FieldInterceptor;
+import org.apache.felix.ipojo.util.DependencyModel;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.Filter;
+import org.osgi.framework.ServiceReference;
+
+/**
+* Temporal dependency.
+* A temporal dependency waits (block) for the availability of the service.
+* If no provider arrives in the specified among of time, a runtime exception is thrown.
+* @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+*/
+public class TemporalDependency extends DependencyModel implements FieldInterceptor {
+    
+    /**
+     * Timeout.
+     */
+    private long m_timeout;
+
+    /**
+     * Constructor.
+     * @param spec : service specification
+     * @param agg : is the dependency aggregate ?
+     * @param filter : LDAP filter
+     * @param context : service context
+     * @param timeout : timeout
+     * @param handler : Handler managing this dependency
+     */
+    public TemporalDependency(Class spec, boolean agg, Filter filter, BundleContext context, long timeout, TemporalHandler handler) {
+        super(spec, agg, true, filter, null, DependencyModel.DYNAMIC_BINDING_POLICY, context, handler);
+        this.m_timeout = timeout;
+    }
+
+    /**
+     * The dependency has been reconfigured.
+     * @param arg0 : new service references
+     * @param arg1 : old service references
+     * @see org.apache.felix.ipojo.util.DependencyModel#onDependencyReconfiguration(org.osgi.framework.ServiceReference[], org.osgi.framework.ServiceReference[])
+     */
+    public void onDependencyReconfiguration(ServiceReference[] arg0, ServiceReference[] arg1) { 
+        throw new UnsupportedOperationException("Reconfiguration not yet supported");
+    }
+
+    /**
+     * A provider arrives.
+     * @param arg0 : service reference of the new provider.
+     * @see org.apache.felix.ipojo.util.DependencyModel#onServiceArrival(org.osgi.framework.ServiceReference)
+     */
+    public void onServiceArrival(ServiceReference arg0) {
+        // Notify if a thread is waiting.
+        synchronized (this) {
+            notifyAll();
+        }
+    }
+
+    /**
+     * A provider leaves.
+     * Nothing to do.
+     * @param arg0 : leaving service references.
+     * @see org.apache.felix.ipojo.util.DependencyModel#onServiceDeparture(org.osgi.framework.ServiceReference)
+     */
+    public synchronized void onServiceDeparture(ServiceReference arg0) { }
+    
+    /**
+     * The code require a value of the monitored field.
+     * If providers are available, the method return service object(s) immediately. 
+     * Else, the thread is blocked until an arrival. If no provider arrives during 
+     * the among of time specified, the method throws a Runtime Exception.
+     * @param arg0 : POJO instance asking for  the service
+     * @param arg1 : field name
+     * @param arg2 : previous value
+     * @return the object to inject.
+     * @see org.apache.felix.ipojo.FieldInterceptor#onGet(java.lang.Object, java.lang.String, java.lang.Object)
+     */
+    public synchronized Object onGet(Object arg0, String arg1, Object arg2) {
+        ServiceReference[] refs = getServiceReferences();
+        if (refs != null) {
+            // Immediate return.
+            if (isAggregate()) {
+                Object[] svc = (Object[]) Array.newInstance(getSpecification(), refs.length);
+                for (int i = 0; i < svc.length; i++) {
+                    svc[i] = getService(refs[i]);
+                }
+                return svc;
+            } else {
+                return getService(refs[0]);
+            }
+        } else {
+            // Begin to wait ...
+            long enter = System.currentTimeMillis();
+            boolean exhausted = false;
+            ServiceReference ref = null;
+            synchronized (this) {
+                while (getServiceReference() == null && ! exhausted) {
+                    try {
+                        wait(1);
+                    } catch (InterruptedException e) {
+                        // We was interrupted ....
+                    } finally {
+                        long end = System.currentTimeMillis(); 
+                        exhausted = (end - enter) > m_timeout;
+                    }
+                }
+            }
+            // Check 
+            if (exhausted) {
+                // Timeout, throw an exception
+                throw new RuntimeException("Service " + getSpecification().getName() + " unavailable : timeout");
+            } else {
+                ref = getServiceReference();
+                if (isAggregate()) {
+                    Object[] svc = (Object[]) Array.newInstance(getSpecification(), 1);
+                    svc[0] = ref;
+                    return svc[0];
+                } else {
+                    return getService(ref);
+                }
+            }
+        }
+    }
+
+    /**
+     * The monitored field receives a value.
+     * Nothing to do.
+     * @param arg0 : POJO setting the value.
+     * @param arg1 : field name
+     * @param arg2 : received value
+     * @see org.apache.felix.ipojo.FieldInterceptor#onSet(java.lang.Object, java.lang.String, java.lang.Object)
+     */
+    public void onSet(Object arg0, String arg1, Object arg2) { }
+
+}
diff --git a/ipojo/temporal.dependency.handler/src/main/java/org/apache/felix/ipojo/handler/temporal/TemporalHandler.java b/ipojo/temporal.dependency.handler/src/main/java/org/apache/felix/ipojo/handler/temporal/TemporalHandler.java
new file mode 100644
index 0000000..ebe4818
--- /dev/null
+++ b/ipojo/temporal.dependency.handler/src/main/java/org/apache/felix/ipojo/handler/temporal/TemporalHandler.java
@@ -0,0 +1,156 @@
+/* 
+ * 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.ipojo.handler.temporal;
+
+import java.util.ArrayList;
+import java.util.Dictionary;
+import java.util.List;
+
+import org.apache.felix.ipojo.ConfigurationException;
+import org.apache.felix.ipojo.PrimitiveHandler;
+import org.apache.felix.ipojo.metadata.Element;
+import org.apache.felix.ipojo.parser.FieldMetadata;
+import org.apache.felix.ipojo.parser.PojoMetadata;
+import org.apache.felix.ipojo.util.DependencyModel;
+import org.apache.felix.ipojo.util.DependencyStateListener;
+import org.osgi.framework.Filter;
+import org.osgi.framework.InvalidSyntaxException;
+
+/**
+* Temporal dependency handler.
+* A temporal dependency waits (block) for the availability of the service.
+* If no provider arrives in the specified among of time, a runtime exception is thrown.
+* @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+*/
+public class TemporalHandler extends PrimitiveHandler implements DependencyStateListener {
+    
+    /**
+     * Default timeout if not specified.
+     */
+    public static final int DEFAULT_TIMEOUT = 3000;
+    
+    /**
+     * Handler namespace.
+     */
+    public static final String NAMESPACE = "org.apache.felix.ipojo.handler.temporal";
+    
+    /**
+     * List of managed dependencies.
+     */
+    private List/*<deps>*/ m_dependencies = new ArrayList(1);
+
+    /**
+     * Start method. Starts managed dependencies.
+     * @see org.apache.felix.ipojo.Handler#start()
+     */
+    public void start() {
+        for (int i = 0; i < m_dependencies.size(); i++) {
+            ((TemporalDependency) m_dependencies.get(i)).start();
+        }
+    }
+    
+    /**
+     * Stop  method. Stops managed dependencies.
+     * @see org.apache.felix.ipojo.Handler#stop()
+     */
+    public void stop() {
+        for (int i = 0; i < m_dependencies.size(); i++) {
+            ((TemporalDependency) m_dependencies.get(i)).stop();
+        }
+        m_dependencies.clear();
+    }
+
+    /**
+     * Configure method.
+     * Create managed dependencies.
+     * @param meta : component type metadata.
+     * @param dictionary : instance configuration.
+     * @throws ConfigurationException : the dependency is not configured correctly
+     * @see org.apache.felix.ipojo.Handler#configure(org.apache.felix.ipojo.metadata.Element, java.util.Dictionary)
+     */
+    public void configure(Element meta, Dictionary dictionary) throws ConfigurationException {
+        PojoMetadata manipulation = getFactory().getPojoMetadata();
+        Element[] deps = meta.getElements("requires", NAMESPACE);
+        for (int i = 0; i < deps.length; i++) {
+            if (!deps[i].containsAttribute("field") || m_dependencies.contains(deps[i].getAttribute("field"))) {
+                error("One temporal dependency must be attached to a field or the field is already used");
+                return;
+            }
+            String field = deps[i].getAttribute("field");
+
+            FieldMetadata fieldmeta = manipulation.getField(field);
+            if (fieldmeta == null) {
+                error("The field " + field + " does not exist in the class " + getInstanceManager().getClassName());
+                return;
+            }             
+                        
+            String fil = deps[i].getAttribute("filter");
+            Filter filter = null; 
+            if (fil != null) {
+                try {
+                    filter = getInstanceManager().getContext().createFilter(fil);
+                } catch (InvalidSyntaxException e) {
+                    error("Cannot create the field from " + fil + ": " + e.getMessage());
+                    return;
+                }
+            }
+            
+            boolean agg = false;
+            String aggregate = meta.getAttribute("aggregate"); 
+            if (aggregate != null) {
+                agg = aggregate.equalsIgnoreCase("true");
+            }
+
+            String spec = fieldmeta.getFieldType();
+            if (spec.endsWith("[]")) {
+                agg = true;
+                spec = spec.substring(0, spec.length() - 2);
+            }
+            
+            long timeout = DEFAULT_TIMEOUT;
+            if (deps[i].containsAttribute("timeout")) {
+                timeout = new Long(deps[i].getAttribute("timeout")).longValue();
+            }
+            
+            Class specification = DependencyModel.loadSpecification(spec, getInstanceManager().getContext());
+            TemporalDependency dep = new TemporalDependency(specification, agg, filter, getInstanceManager().getContext(), timeout, this);
+            m_dependencies.add(dep);
+            
+            getInstanceManager().register(fieldmeta, dep);
+        }        
+    }
+
+    /**
+     * Nothing to do.
+     * A temporal dependency is always valid.
+     * @param dependencymodel : dependency.
+     * @see org.apache.felix.ipojo.util.DependencyStateListener#invalidate(org.apache.felix.ipojo.util.DependencyModel)
+     */
+    public void invalidate(DependencyModel dependencymodel) {    }
+
+    /**
+     * Nothing to do.
+     * A temporal dependency is always valid.
+     * @param dependencymodel : dependency.
+     * @see org.apache.felix.ipojo.util.DependencyStateListener#validate(org.apache.felix.ipojo.util.DependencyModel)
+     */
+    public void validate(DependencyModel dependencymodel) {    }
+    
+
+}
diff --git a/ipojo/temporal.dependency.handler/src/main/resources/metadata.xml b/ipojo/temporal.dependency.handler/src/main/resources/metadata.xml
new file mode 100644
index 0000000..bd52e4c
--- /dev/null
+++ b/ipojo/temporal.dependency.handler/src/main/resources/metadata.xml
@@ -0,0 +1,24 @@
+<!--
+	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.
+-->
+<ipojo>
+	<handler
+		classname="org.apache.felix.ipojo.handler.temporal.TemporalHandler"
+		name="requires" namespace="org.apache.felix.ipojo.handler.temporal">
+	</handler>
+</ipojo>
\ No newline at end of file