Copy modules for event prototype

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@705212 13f79535-47bb-0310-9956-ffa450edef68

9 files changed, 1016 insertions, 0 deletions

diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/assembly/MetaComponent.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/assembly/MetaComponent.java
new file mode 100644
index 0000000000..885fe8cfb0
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/assembly/MetaComponent.java
@@ -0,0 +1,27 @@
+/*
+ * 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.sca.assembly;
+
+import javax.xml.stream.XMLStreamReader;
+
+public interface MetaComponent {
+    XMLStreamReader build() throws Exception;
+
+    String getName();
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/assembly/xml/MetaComponentProcessor.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/assembly/xml/MetaComponentProcessor.java
new file mode 100644
index 0000000000..44673bfdb9
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/assembly/xml/MetaComponentProcessor.java
@@ -0,0 +1,788 @@
+/*
+ * 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.sca.assembly.xml;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.StringTokenizer;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.Binding;
+import org.apache.tuscany.sca.assembly.Callback;
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentProperty;
+import org.apache.tuscany.sca.assembly.ComponentReference;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.Composite;
+import org.apache.tuscany.sca.assembly.CompositeReference;
+import org.apache.tuscany.sca.assembly.CompositeService;
+import org.apache.tuscany.sca.assembly.ConstrainingType;
+import org.apache.tuscany.sca.assembly.Contract;
+import org.apache.tuscany.sca.assembly.Implementation;
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.assembly.Reference;
+import org.apache.tuscany.sca.assembly.Service;
+import org.apache.tuscany.sca.assembly.Wire;
+import org.apache.tuscany.sca.contribution.ContributionFactory;
+import org.apache.tuscany.sca.contribution.DeployedArtifact;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.service.ContributionWriteException;
+import org.apache.tuscany.sca.interfacedef.InterfaceContract;
+import org.apache.tuscany.sca.interfacedef.InterfaceContractMapper;
+import org.apache.tuscany.sca.interfacedef.Operation;
+import org.apache.tuscany.sca.policy.PolicyFactory;
+import org.apache.tuscany.sca.policy.PolicySetAttachPoint;
+import org.apache.tuscany.sca.policy.util.PolicyValidationException;
+import org.w3c.dom.Document;
+
+/**
+ * A component processor.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class MetaComponentProcessor extends BaseAssemblyProcessor implements
+        StAXArtifactProcessor<Component> {
+
+    /**
+     * Construct a new composite processor
+     * 
+     * @param contributionFactory
+     * @param assemblyFactory
+     * @param policyFactory
+     * @param extensionProcessor
+     */
+    private Composite composite = null;
+    private Component generatedComponent = null;
+
+    public MetaComponentProcessor(ContributionFactory contributionFactory,
+            AssemblyFactory factory, PolicyFactory policyFactory,
+            InterfaceContractMapper interfaceContractMapper,
+            StAXArtifactProcessor extensionProcessor) {
+        super(contributionFactory, factory, policyFactory, extensionProcessor);
+    }
+
+    /**
+     * Construct a new composite processor
+     * 
+     * @param assemblyFactory
+     * @param policyFactory
+     * @param extensionProcessor
+     *                public CompositeProcessor(AssemblyFactory factory,
+     *                PolicyFactory policyFactory, InterfaceContractMapper
+     *                interfaceContractMapper, StAXArtifactProcessor
+     *                extensionProcessor) { super(factory, policyFactory,
+     *                extensionProcessor); }
+     */
+    public void setComposite(Composite c) {
+        composite = c;
+    }
+
+    public Component getParsedComponent() {
+        return this.generatedComponent;
+    }
+
+    public Composite getParsedComposite() {
+        return this.composite;
+    }
+
+    public Component read(XMLStreamReader reader)
+            throws ContributionReadException, XMLStreamException {
+        Composite include = null;
+        Component component = null;
+        Property property = null;
+        ComponentService componentService = null;
+        ComponentReference componentReference = null;
+        ComponentProperty componentProperty = null;
+        CompositeService compositeService = null;
+        CompositeReference compositeReference = null;
+        Contract contract = null;
+        Wire wire = null;
+        Callback callback = null;
+        QName name = null;
+
+        // Read the component scdl
+
+        while (reader.hasNext()) {
+            int event = reader.getEventType();
+            switch (event) {
+            case START_ELEMENT:
+                QName itemName = reader.getName();
+                if (!itemName.getNamespaceURI().equals(SCA10_NS))
+                    name = new QName(SCA10_NS, itemName.getLocalPart());
+                else
+                    name = itemName;
+
+                if (SERVICE_QNAME.equals(name)) {
+                    if (component != null) {
+
+                        // Read a <component><service>
+                        componentService = assemblyFactory
+                                .createComponentService();
+                        contract = componentService;
+                        componentService.setName(getString(reader, NAME));
+                        component.getServices().add(componentService);
+                        policyProcessor.readPolicies(contract, reader);
+                    }
+
+                } else if (REFERENCE_QNAME.equals(name)) {
+                    if (component != null) {
+                        // Read a <component><reference>
+                        componentReference = assemblyFactory
+                                .createComponentReference();
+                        contract = componentReference;
+                        componentReference.setName(getString(reader, NAME));
+                        readMultiplicity(componentReference, reader);
+                        if (isSet(reader, AUTOWIRE)) {
+                            componentReference.setAutowire(getBoolean(reader,
+                                    AUTOWIRE));
+                        }
+                        readTargets(componentReference, reader);
+                        componentReference.setWiredByImpl(getBoolean(reader,
+                                WIRED_BY_IMPL));
+                        component.getReferences().add(componentReference);
+                        policyProcessor.readPolicies(contract, reader);
+                    }
+
+                } else if (PROPERTY_QNAME.equals(name)) {
+                    if (component != null) {
+
+                        // Read a <component><property>
+                        componentProperty = assemblyFactory
+                                .createComponentProperty();
+                        property = componentProperty;
+                        componentProperty.setSource(getString(reader, SOURCE));
+                        componentProperty.setFile(getString(reader, FILE));
+                        policyProcessor.readPolicies(property, reader);
+                        readAbstractProperty(componentProperty, reader);
+
+                        // Read the property value
+                        Document value = readPropertyValue(property
+                                .getXSDElement(), property.getXSDType(), reader);
+                        property.setValue(value);
+
+                        component.getProperties().add(componentProperty);
+                    }
+                } else if (COMPONENT_QNAME.equals(name)) {
+
+                    // Read a <component>
+                    component = assemblyFactory.createComponent();
+                    component.setName(getString(reader, NAME));
+                    if (isSet(reader, AUTOWIRE)) {
+                        component.setAutowire(getBoolean(reader, AUTOWIRE));
+                    }
+                    if (isSet(reader, URI)) {
+                        component.setURI(getString(reader, URI));
+                    }
+                    component.setConstrainingType(readConstrainingType(reader));
+                    composite.getComponents().add(component);
+                    policyProcessor.readPolicies(component, reader);
+
+                } else if (WIRE_QNAME.equals(name)) {
+
+                    // Read a <wire>
+                    wire = assemblyFactory.createWire();
+                    ComponentReference source = assemblyFactory
+                            .createComponentReference();
+                    source.setUnresolved(true);
+                    source.setName(getString(reader, SOURCE));
+                    wire.setSource(source);
+
+                    ComponentService target = assemblyFactory
+                            .createComponentService();
+                    target.setUnresolved(true);
+                    target.setName(getString(reader, TARGET));
+                    wire.setTarget(target);
+
+                    composite.getWires().add(wire);
+                    policyProcessor.readPolicies(wire, reader);
+
+                } else if (CALLBACK_QNAME.equals(name)) {
+
+                    // Read a <callback>
+                    callback = assemblyFactory.createCallback();
+                    contract.setCallback(callback);
+                    policyProcessor.readPolicies(callback, reader);
+
+                } else if (OPERATION_QNAME.equals(name)) {
+
+                    // Read an <operation>
+                    Operation operation = assemblyFactory.createOperation();
+                    operation.setName(getString(reader, NAME));
+                    operation.setUnresolved(true);
+                    if (callback != null) {
+                        policyProcessor.readPolicies(callback, operation,
+                                reader);
+                    } else {
+                        policyProcessor.readPolicies(contract, operation,
+                                reader);
+                    }
+                } else if (IMPLEMENTATION_COMPOSITE_QNAME.equals(name)) {
+
+                    // Read an implementation.composite
+                    Composite implementation = assemblyFactory
+                            .createComposite();
+                    implementation.setName(getQName(reader, NAME));
+                    implementation.setUnresolved(true);
+                    component.setImplementation(implementation);
+                    policyProcessor.readPolicies(implementation, reader);
+                } else {
+
+                    // Read an extension element
+                    Object extension = extensionProcessor.read(reader);
+                    if (extension != null) {
+                        if (extension instanceof InterfaceContract) {
+
+                            // <service><interface> and
+                            // <reference><interface>
+                            if (contract != null) {
+                                contract
+                                        .setInterfaceContract((InterfaceContract) extension);
+                            } else {
+                                if (name.getNamespaceURI().equals(SCA10_NS)) {
+                                    throw new ContributionReadException(
+                                            "Unexpected <interface> element found. It should appear inside a <service> or <reference> element");
+                                } else {
+                                    composite.getExtensions().add(extension);
+                                }
+                            }
+
+                        } else if (extension instanceof Binding) {
+                            // <service><binding> and
+                            // <reference><binding>
+                            if (callback != null) {
+                                callback.getBindings().add((Binding) extension);
+                            } else {
+                                if (contract != null) {
+                                    contract.getBindings().add(
+                                            (Binding) extension);
+                                } else {
+                                    if (name.getNamespaceURI().equals(SCA10_NS)) {
+                                        throw new ContributionReadException(
+                                                "Unexpected <binding> element found. It should appear inside a <service> or <reference> element");
+                                    } else {
+                                        composite.getExtensions()
+                                                .add(extension);
+                                    }
+                                }
+                            }
+
+                        } else if (extension instanceof Implementation) {
+
+                            // <component><implementation>
+                            if (component != null) {
+                                component
+                                        .setImplementation((Implementation) extension);
+                            } else {
+                                if (name.getNamespaceURI().equals(SCA10_NS)) {
+                                    throw new ContributionReadException(
+                                            "Unexpected <implementation> element found. It should appear inside a <component> element");
+                                } else {
+                                    composite.getExtensions().add(extension);
+                                }
+                            }
+                        } else {
+
+                            // Add the extension element to the current
+                            // element
+                            if (callback != null) {
+                                callback.getExtensions().add(extension);
+                            } else if (contract != null) {
+                                contract.getExtensions().add(extension);
+                            } else if (property != null) {
+                                property.getExtensions().add(extension);
+                            } else if (component != null) {
+                                component.getExtensions().add(extension);
+                            } else {
+                                composite.getExtensions().add(extension);
+                            }
+                        }
+                    }
+                }
+                break;
+
+            case XMLStreamConstants.CHARACTERS:
+                break;
+
+            case END_ELEMENT:
+                name = reader.getName();
+
+                // Clear current state when reading reaching end element
+                if (SERVICE_QNAME.equals(name)) {
+                    componentService = null;
+                    compositeService = null;
+                    contract = null;
+                } else if (INCLUDE_QNAME.equals(name)) {
+                    include = null;
+                } else if (REFERENCE_QNAME.equals(name)) {
+                    componentReference = null;
+                    compositeReference = null;
+                    contract = null;
+                } else if (PROPERTY_QNAME.equals(name)) {
+                    componentProperty = null;
+                    property = null;
+                } else if (COMPONENT_QNAME.equals(name)) {
+                    // component = null;
+                } else if (WIRE_QNAME.equals(name)) {
+                    wire = null;
+                } else if (CALLBACK_QNAME.equals(name)) {
+                    callback = null;
+                }
+                break;
+            }
+
+            // Read the next element
+            if (reader.hasNext()) {
+                reader.next();
+            }
+        }
+        this.generatedComponent = component;
+        return component;
+    }
+
+    public void write(Composite composite, XMLStreamWriter writer)
+            throws ContributionWriteException, XMLStreamException {
+
+        // Write <composite> element
+        writeStartDocument(writer, COMPOSITE, writeConstrainingType(composite),
+                new XAttr(TARGET_NAMESPACE, composite.getName()
+                        .getNamespaceURI()), new XAttr(NAME, composite
+                        .getName().getLocalPart()), new XAttr(AUTOWIRE,
+                        composite.getAutowire()), policyProcessor
+                        .writePolicies(composite));
+
+        // Write <service> elements
+        for (Service service : composite.getServices()) {
+            CompositeService compositeService = (CompositeService) service;
+            Component promotedComponent = compositeService
+                    .getPromotedComponent();
+            ComponentService promotedService = compositeService
+                    .getPromotedService();
+            String promote;
+            if (promotedService != null) {
+                if (promotedService.getName() != null) {
+                    promote = promotedComponent.getName() + '/'
+                            + promotedService.getService();
+                } else {
+                    promote = promotedComponent.getName();
+                }
+            } else {
+                promote = null;
+            }
+            writeStart(writer, SERVICE, new XAttr(NAME, service.getName()),
+                    new XAttr(PROMOTE, promote), policyProcessor
+                            .writePolicies(service));
+
+            // Write service interface
+            extensionProcessor.write(service.getInterfaceContract(), writer);
+
+            // Write bindings
+            for (Binding binding : service.getBindings()) {
+                extensionProcessor.write(binding, writer);
+            }
+
+            // Write <callback> element
+            if (service.getCallback() != null) {
+                Callback callback = service.getCallback();
+                writeStart(writer, CALLBACK, policyProcessor
+                        .writePolicies(callback));
+
+                // Write callback bindings
+                for (Binding binding : callback.getBindings()) {
+                    extensionProcessor.write(binding, writer);
+                }
+
+                // Write extensions
+                for (Object extension : callback.getExtensions()) {
+                    extensionProcessor.write(extension, writer);
+                }
+
+                writeEnd(writer);
+            }
+
+            // Write extensions
+            for (Object extension : service.getExtensions()) {
+                extensionProcessor.write(extension, writer);
+            }
+
+            writeEnd(writer);
+        }
+
+        // Write <component> elements
+        for (Component component : composite.getComponents()) {
+            writeStart(writer, COMPONENT, new XAttr(NAME, component.getName()),
+                    new XAttr(URI, component.getURI()), new XAttr(AUTOWIRE,
+                            component.getAutowire()), policyProcessor
+                            .writePolicies(component));
+
+            // Write <service> elements
+            for (ComponentService service : component.getServices()) {
+                writeStart(writer, SERVICE, new XAttr(NAME, service.getName()),
+                        policyProcessor.writePolicies(service));
+
+                // Write service interface
+                extensionProcessor
+                        .write(service.getInterfaceContract(), writer);
+
+                // Write bindings
+                for (Binding binding : service.getBindings()) {
+                    extensionProcessor.write(binding, writer);
+                }
+
+                // Write <callback> element
+                if (service.getCallback() != null) {
+                    Callback callback = service.getCallback();
+                    writeStart(writer, CALLBACK, policyProcessor
+                            .writePolicies(callback));
+
+                    // Write bindings
+                    for (Binding binding : callback.getBindings()) {
+                        extensionProcessor.write(binding, writer);
+                    }
+
+                    // Write extensions
+                    for (Object extension : callback.getExtensions()) {
+                        extensionProcessor.write(extension, writer);
+                    }
+
+                    writeEnd(writer);
+                }
+
+                // Write extensions
+                for (Object extension : service.getExtensions()) {
+                    extensionProcessor.write(extension, writer);
+                }
+
+                writeEnd(writer);
+            }
+
+            // Write <reference> elements
+            for (ComponentReference reference : component.getReferences()) {
+                writeStart(writer, REFERENCE, new XAttr(NAME, reference
+                        .getName()), new XAttr(AUTOWIRE, reference
+                        .getAutowire()), writeTargets(reference),
+                        policyProcessor.writePolicies(reference));
+
+                // Write reference interface
+                extensionProcessor.write(reference.getInterfaceContract(),
+                        writer);
+
+                // Write bindings
+                for (Binding binding : reference.getBindings()) {
+                    extensionProcessor.write(binding, writer);
+                }
+
+                // Write callback
+                if (reference.getCallback() != null) {
+                    Callback callback = reference.getCallback();
+                    writeStart(writer, CALLBACK, policyProcessor
+                            .writePolicies(callback));
+
+                    // Write callback bindings
+                    for (Binding binding : callback.getBindings()) {
+                        extensionProcessor.write(binding, writer);
+                    }
+
+                    // Write extensions
+                    for (Object extensions : callback.getExtensions()) {
+                        extensionProcessor.write(extensions, writer);
+                    }
+
+                    writeEnd(writer);
+                }
+
+                // Write extensions
+                for (Object extensions : reference.getExtensions()) {
+                    extensionProcessor.write(extensions, writer);
+                }
+
+                writeEnd(writer);
+            }
+
+            // Write <property> elements
+            for (ComponentProperty property : component.getProperties()) {
+                writeStart(writer, PROPERTY,
+                        new XAttr(NAME, property.getName()), new XAttr(
+                                MUST_SUPPLY, property.isMustSupply()),
+                        new XAttr(MANY, property.isMany()), new XAttr(TYPE,
+                                property.getXSDType()), new XAttr(ELEMENT,
+                                property.getXSDElement()), new XAttr(SOURCE,
+                                property.getSource()), new XAttr(FILE, property
+                                .getFile()), policyProcessor
+                                .writePolicies(property));
+
+                // Write property value
+                writePropertyValue(property.getValue(), property
+                        .getXSDElement(), property.getXSDType(), writer);
+
+                // Write extensions
+                for (Object extension : property.getExtensions()) {
+                    extensionProcessor.write(extension, writer);
+                }
+
+                writeEnd(writer);
+            }
+
+            // Write the component implementation
+            Implementation implementation = component.getImplementation();
+            if (implementation instanceof Composite) {
+                writeStart(writer, IMPLEMENTATION_COMPOSITE, new XAttr(NAME,
+                        composite.getName()));
+                writeEnd(writer);
+            } else {
+                extensionProcessor.write(component.getImplementation(), writer);
+            }
+
+            writeEnd(writer);
+        }
+
+        // Write <reference> elements
+        for (Reference reference : composite.getReferences()) {
+            CompositeReference compositeReference = (CompositeReference) reference;
+
+            // Write list of promoted references
+            List<String> promote = new ArrayList<String>();
+            for (ComponentReference promoted : compositeReference
+                    .getPromotedReferences()) {
+                promote.add(promoted.getName());
+            }
+
+            // Write <reference> element
+            writeStart(writer, REFERENCE, new XAttr(NAME, reference.getName()),
+                    new XAttr(PROMOTE, promote), policyProcessor
+                            .writePolicies(reference));
+
+            // Write reference interface
+            extensionProcessor.write(reference.getInterfaceContract(), writer);
+
+            // Write bindings
+            for (Binding binding : reference.getBindings()) {
+                extensionProcessor.write(binding, writer);
+            }
+
+            // Write <callback> element
+            if (reference.getCallback() != null) {
+                Callback callback = reference.getCallback();
+                writeStart(writer, CALLBACK);
+
+                // Write callback bindings
+                for (Binding binding : callback.getBindings()) {
+                    extensionProcessor.write(binding, writer);
+                }
+
+                // Write extensions
+                for (Object extension : callback.getExtensions()) {
+                    extensionProcessor.write(extension, writer);
+                }
+
+                writeEnd(writer);
+            }
+
+            // Write extensions
+            for (Object extension : reference.getExtensions()) {
+                extensionProcessor.write(extension, writer);
+            }
+
+            writeEnd(writer);
+        }
+
+        // Write <property> elements
+        for (Property property : composite.getProperties()) {
+            writeStart(writer, PROPERTY, new XAttr(NAME, property.getName()),
+                    new XAttr(MUST_SUPPLY, property.isMustSupply()), new XAttr(
+                            MANY, property.isMany()), new XAttr(TYPE, property
+                            .getXSDType()), new XAttr(ELEMENT, property
+                            .getXSDElement()), policyProcessor
+                            .writePolicies(property));
+
+            // Write property value
+            writePropertyValue(property.getValue(), property.getXSDElement(),
+                    property.getXSDType(), writer);
+
+            // Write extensions
+            for (Object extension : property.getExtensions()) {
+                extensionProcessor.write(extension, writer);
+            }
+
+            writeEnd(writer);
+        }
+
+        // Write <wire> elements
+        for (Wire wire : composite.getWires()) {
+            writeStart(writer, WIRE, new XAttr(SOURCE, wire.getSource()
+                    .getName()), new XAttr(TARGET, wire.getTarget().getName()));
+
+            // Write extensions
+            for (Object extension : wire.getExtensions()) {
+                extensionProcessor.write(extension, writer);
+            }
+            writeEnd(writer);
+        }
+
+        for (Object extension : composite.getExtensions()) {
+            extensionProcessor.write(extension, writer);
+        }
+
+        writeEndDocument(writer);
+    }
+
+    public void resolve(Composite composite, ModelResolver resolver)
+            throws ContributionResolveException, PolicyValidationException {
+
+        // Resolve constraining type
+        ConstrainingType constrainingType = composite.getConstrainingType();
+        if (constrainingType != null) {
+            constrainingType = resolver.resolveModel(ConstrainingType.class,
+                    constrainingType);
+            composite.setConstrainingType(constrainingType);
+        }
+
+        // Resolve includes in the composite
+        for (int i = 0, n = composite.getIncludes().size(); i < n; i++) {
+            Composite include = composite.getIncludes().get(i);
+            if (include != null) {
+                include = resolver.resolveModel(Composite.class, include);
+                composite.getIncludes().set(i, include);
+            }
+        }
+
+        // Resolve extensions
+        for (Object extension : composite.getExtensions()) {
+            if (extension != null) {
+                extensionProcessor.resolve(extension, resolver);
+            }
+        }
+
+        // Resolve component implementations, services and references
+        for (Component component : composite.getComponents()) {
+            constrainingType = component.getConstrainingType();
+            if (constrainingType != null) {
+                constrainingType = resolver.resolveModel(
+                        ConstrainingType.class, constrainingType);
+                component.setConstrainingType(constrainingType);
+            }
+
+            Implementation implementation = component.getImplementation();
+            if (implementation != null) {
+                implementation = resolveImplementation(implementation, resolver);
+                component.setImplementation(implementation);
+            }
+
+            for (ComponentProperty componentProperty : component
+                    .getProperties()) {
+                if (componentProperty.getFile() != null) {
+                    DeployedArtifact deployedArtifact = contributionFactory
+                            .createDeployedArtifact();
+                    deployedArtifact.setURI(componentProperty.getFile());
+                    deployedArtifact = resolver.resolveModel(
+                            DeployedArtifact.class, deployedArtifact);
+                    if (deployedArtifact.getLocation() != null) {
+                        componentProperty.setFile(deployedArtifact
+                                .getLocation());
+                    }
+                }
+            }
+            resolveIntents(component.getRequiredIntents(), resolver);
+            resolvePolicySets(component.getPolicySets(), resolver);
+            resolveContracts(component.getServices(), resolver);
+            resolveContracts(component.getReferences(), resolver);
+        }
+
+        // Resolve composite services and references
+        resolveContracts(composite.getServices(), resolver);
+        resolveContracts(composite.getReferences(), resolver);
+        if (composite instanceof PolicySetAttachPoint) {
+            resolveIntents(((PolicySetAttachPoint) composite)
+                    .getRequiredIntents(), resolver);
+            resolvePolicySets(((PolicySetAttachPoint) composite)
+                    .getPolicySets(), resolver);
+        }
+    }
+
+    public void write(Component model, XMLStreamWriter writer)
+            throws ContributionWriteException, XMLStreamException {
+        write(this.composite, writer);
+
+    }
+
+    public void resolve(Component component, ModelResolver resolver)
+            throws ContributionResolveException {
+        // Resolve component implementations, services and references
+        ConstrainingType constrainingType = component.getConstrainingType();
+        if (constrainingType != null) {
+            constrainingType = resolver.resolveModel(ConstrainingType.class,
+                    constrainingType);
+            component.setConstrainingType(constrainingType);
+        }
+
+        Implementation implementation = component.getImplementation();
+        if (implementation != null) {
+            implementation = resolveImplementation(implementation, resolver);
+            component.setImplementation(implementation);
+        }
+
+        for (ComponentProperty componentProperty : component.getProperties()) {
+            if (componentProperty.getFile() != null) {
+                DeployedArtifact deployedArtifact = contributionFactory
+                        .createDeployedArtifact();
+                deployedArtifact.setURI(componentProperty.getFile());
+                deployedArtifact = resolver.resolveModel(
+                        DeployedArtifact.class, deployedArtifact);
+                if (deployedArtifact.getLocation() != null) {
+                    componentProperty.setFile(deployedArtifact.getLocation());
+                }
+            }
+        }
+        resolveIntents(component.getRequiredIntents(), resolver);
+        resolvePolicySets(component.getPolicySets(), resolver);
+        resolveContracts(component.getServices(), resolver);
+        resolveContracts(component.getReferences(), resolver);
+    }
+
+    public void resolveReference(ComponentReference reference,
+            ModelResolver resolver) throws ContributionResolveException {
+        resolveIntents(reference.getRequiredIntents(), resolver);
+        resolvePolicySets(reference.getPolicySets(), resolver);
+        List<ComponentReference> contracts = new ArrayList<ComponentReference>();
+        contracts.add(reference);
+        resolveContracts(contracts, resolver);
+    }
+
+    public QName getArtifactType() {
+        return COMPONENT_QNAME;
+    }
+
+    public Class<Component> getModelType() {
+
+        return Component.class;
+    }
+
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentNotFoundException.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentNotFoundException.java
new file mode 100644
index 0000000000..d93a92b32c
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentNotFoundException.java
@@ -0,0 +1,27 @@
+/*
+ * 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.sca.contribution.updater;
+
+public class ComponentNotFoundException extends Exception {
+
+    public ComponentNotFoundException(String string) {
+        super(string);
+    }
+
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentUpdater.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentUpdater.java
new file mode 100644
index 0000000000..8743556538
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentUpdater.java
@@ -0,0 +1,31 @@
+/*
+ * 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.sca.contribution.updater;
+
+import org.apache.tuscany.sca.assembly.ComponentReference;
+
+public interface ComponentUpdater {
+    public ComponentReference addReferenceWire(String referenceName,
+            String className, Class<?> interfaceName, String targetComponent)
+            throws ComponentUpdaterException, ComponentNotFoundException;
+
+    public ComponentReference removeReferenceWire(String referenceName,
+            String targetComponent) throws ComponentUpdaterException,
+            ComponentNotFoundException;
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentUpdaterException.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentUpdaterException.java
new file mode 100644
index 0000000000..f94238089f
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ComponentUpdaterException.java
@@ -0,0 +1,28 @@
+/*
+ * 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.sca.contribution.updater;
+
+public class ComponentUpdaterException extends Exception {
+
+    private static final long serialVersionUID = 33909120912033L;
+
+    public ComponentUpdaterException(String string) {
+        super(string);
+    }
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeNotFoundException.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeNotFoundException.java
new file mode 100644
index 0000000000..52d7e602b7
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeNotFoundException.java
@@ -0,0 +1,25 @@
+/*
+ * 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.sca.contribution.updater;
+
+public class CompositeNotFoundException extends Exception {
+    public CompositeNotFoundException(String msg) {
+        super(msg);
+    }
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeUpdater.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeUpdater.java
new file mode 100644
index 0000000000..4f55148651
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeUpdater.java
@@ -0,0 +1,31 @@
+/*
+ * 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.sca.contribution.updater;
+
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.MetaComponent;
+
+public interface CompositeUpdater {
+    Component addComponent(MetaComponent c) throws CompositeUpdaterException;
+
+    Component removeComponent(String componentName)
+            throws CompositeUpdaterException;
+
+    Component findComponent(String componentName);
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeUpdaterException.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeUpdaterException.java
new file mode 100644
index 0000000000..3dc86d97f7
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/CompositeUpdaterException.java
@@ -0,0 +1,29 @@
+/*
+ * 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.sca.contribution.updater;
+
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+
+public class CompositeUpdaterException extends Exception {
+
+    public CompositeUpdaterException(String string) {
+        super(string);
+    }
+
+}
diff --git a/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ContributionUpdater.java b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ContributionUpdater.java
new file mode 100644
index 0000000000..a364c23174
--- /dev/null
+++ b/sandbox/event/modules/contribution-updater/src/main/java/org/apache/tuscany/sca/contribution/updater/ContributionUpdater.java
@@ -0,0 +1,30 @@
+/*
+ * 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.sca.contribution.updater;
+
+/*
+ * This interface is used to get and modify artifacts from an existing
+ * contribution
+ */
+public interface ContributionUpdater {
+    CompositeUpdater getCompositeUpdater(String contribURI, String compositeURI);
+
+    ComponentUpdater getComponentUpdater(String contribURI,
+            String compositeURI, String componentName);
+}