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diff --git a/sca-java-1.x/branches/sca-java-M2/sca/kernel/core/src/main/java/org/apache/tuscany/core/implementation/composite/AbstractCompositeComponent.java b/sca-java-1.x/branches/sca-java-M2/sca/kernel/core/src/main/java/org/apache/tuscany/core/implementation/composite/AbstractCompositeComponent.java
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+++ b/sca-java-1.x/branches/sca-java-M2/sca/kernel/core/src/main/java/org/apache/tuscany/core/implementation/composite/AbstractCompositeComponent.java
@@ -0,0 +1,170 @@
+/*
+ * 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.tuscany.core.implementation.composite;
+
+import java.util.Map;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import org.w3c.dom.Document;
+
+import org.apache.tuscany.spi.builder.Connector;
+import org.apache.tuscany.spi.component.CompositeComponent;
+import org.apache.tuscany.spi.component.ObjectRegistrationException;
+import org.apache.tuscany.spi.component.SCAObject;
+import org.apache.tuscany.spi.component.ScopeContainer;
+import org.apache.tuscany.spi.event.Event;
+import org.apache.tuscany.spi.extension.CompositeComponentExtension;
+import org.apache.tuscany.spi.model.Operation;
+import org.apache.tuscany.spi.wire.InboundWire;
+import org.apache.tuscany.spi.wire.TargetInvoker;
+
+import org.apache.tuscany.core.component.ComponentInitException;
+import org.apache.tuscany.core.component.event.CompositeStart;
+import org.apache.tuscany.core.component.event.CompositeStop;
+import org.apache.tuscany.core.implementation.system.component.SystemSingletonAtomicComponent;
+
+/**
+ * The base implementation of a composite context
+ *
+ * @version $Rev$ $Date$
+ */
+public abstract class AbstractCompositeComponent extends CompositeComponentExtension {
+
+    public static final int DEFAULT_WAIT = 1000 * 60;
+
+    // Blocking latch to ensure the module is initialized exactly once prior to servicing requests
+    protected CountDownLatch initializeLatch = new CountDownLatch(1);
+
+    protected final Object lock = new Object();
+
+    // Indicates whether the module context has been initialized
+    protected boolean initialized;
+
+    protected ScopeContainer scopeContainer;
+
+
+    /**
+     * @param name           the name of the SCA composite
+     * @param parent         the SCA composite parent
+     * @param connector
+     * @param propertyValues the values of this composite's Properties
+     */
+    public AbstractCompositeComponent(String name,
+                                      CompositeComponent parent,
+                                      Connector connector,
+                                      Map<String, Document> propertyValues) {
+        super(name, parent, connector, propertyValues);
+    }
+
+    public void setScopeContainer(ScopeContainer scopeContainer) {
+        assert this.scopeContainer == null;
+        this.scopeContainer = scopeContainer;
+        addListener(scopeContainer);
+    }
+
+    public <S, I extends S> void registerJavaObject(String name, Class<S> service, I instance)
+        throws ObjectRegistrationException {
+        register(new SystemSingletonAtomicComponent<S, I>(name, this, service, instance));
+    }
+
+    public void start() {
+        synchronized (lock) {
+            if (lifecycleState != UNINITIALIZED && lifecycleState != STOPPED) {
+                throw new IllegalStateException("Composite not in UNINITIALIZED state");
+            }
+
+            if (scopeContainer != null) {
+                scopeContainer.start();
+            }
+            for (SCAObject child : systemChildren.values()) {
+                child.start();
+            }
+            for (SCAObject child : children.values()) {
+                child.start();
+            }
+            initializeLatch.countDown();
+            initialized = true;
+            lifecycleState = INITIALIZED;
+        }
+        publish(new CompositeStart(this, this));
+    }
+
+    public void stop() {
+        if (lifecycleState == STOPPED) {
+            return;
+        }
+
+        publish(new CompositeStop(this, this));
+        for (SCAObject child : children.values()) {
+            child.stop();
+        }
+        for (SCAObject child : systemChildren.values()) {
+            child.stop();
+        }
+        if (scopeContainer != null) {
+            scopeContainer.stop();
+        }
+
+        // need to block a start until reset is complete
+        initializeLatch = new CountDownLatch(2);
+        lifecycleState = STOPPING;
+        initialized = false;
+        // allow initialized to be called
+        initializeLatch.countDown();
+        lifecycleState = STOPPED;
+    }
+
+    public void publish(Event event) {
+        if (lifecycleState == STOPPED) {
+            return;
+        }
+        checkInit();
+        super.publish(event);
+    }
+
+    public TargetInvoker createTargetInvoker(String targetName, Operation operation) {
+        return null;
+    }
+
+    public TargetInvoker createAsyncTargetInvoker(InboundWire wire, Operation operation) {
+        return null;
+    }
+
+
+    /**
+     * Blocks until the module context has been initialized
+     */
+    protected void checkInit() {
+        if (!initialized) {
+            try {
+                /* block until the module has initialized */
+                boolean success = initializeLatch.await(AbstractCompositeComponent.DEFAULT_WAIT,
+                    TimeUnit.MILLISECONDS);
+                if (!success) {
+                    throw new ComponentInitException("Timeout waiting for context to initialize");
+                }
+            } catch (InterruptedException e) { // should not happen
+            }
+        }
+
+    }
+
+
+}