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Diffstat (limited to 'sca-java-1.x/branches/sca-java-1.6.2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java')
| -rw-r--r-- | sca-java-1.x/branches/sca-java-1.6.2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.6.2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java b/sca-java-1.x/branches/sca-java-1.6.2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java new file mode 100644 index 0000000000..964116a0c2 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-1.6.2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java @@ -0,0 +1,390 @@ +/* + * 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 javax.xml.namespace.QName; +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.ComponentType; +import org.apache.tuscany.sca.assembly.Contract; +import org.apache.tuscany.sca.assembly.Extensible; +import org.apache.tuscany.sca.assembly.ExtensionFactory; +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.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.StAXAttributeProcessor; +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.Operation; +import org.apache.tuscany.sca.interfacedef.impl.OperationImpl; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.policy.IntentAttachPoint; +import org.apache.tuscany.sca.policy.PolicyFactory; +import org.apache.tuscany.sca.policy.PolicySetAttachPoint; +import org.w3c.dom.Document; + +/** + * A componentType processor. + * + * @version $Rev$ $Date$ + */ +public class ComponentTypeProcessor extends BaseAssemblyProcessor implements StAXArtifactProcessor<ComponentType> { + + /** + * Constructs a new componentType processor. + * @param assemblyFactory + * @param policyFactory + * @param registry + */ + public ComponentTypeProcessor(AssemblyFactory assemblyFactory, + ExtensionFactory extensionFactory, + PolicyFactory policyFactory, + StAXArtifactProcessor extensionProcessor, + StAXAttributeProcessor extensionAttributeProcessor, + Monitor monitor) { + super(assemblyFactory, extensionFactory, policyFactory, extensionProcessor, extensionAttributeProcessor, monitor); + } + + /** + * Constructs a new componentType processor. + * + * @param modelFactories + * @param extensionProcessor + */ + public ComponentTypeProcessor(ModelFactoryExtensionPoint modelFactories, + StAXArtifactProcessor extensionProcessor, + StAXAttributeProcessor extensionAttributeProcessor, + Monitor monitor) { + super(modelFactories.getFactory(AssemblyFactory.class), + modelFactories.getFactory(ExtensionFactory.class), + modelFactories.getFactory(PolicyFactory.class), + extensionProcessor, + extensionAttributeProcessor, + monitor); + } + + public ComponentType read(XMLStreamReader reader) throws ContributionReadException { + ComponentType componentType = null; + Service service = null; + Reference reference = null; + Contract contract = null; + Property property = null; + Callback callback = null; + QName name = null; + + try { + // Read the componentType document + while (reader.hasNext()) { + int event = reader.getEventType(); + switch (event) { + case START_ELEMENT: + name = reader.getName(); + + if (Constants.COMPONENT_TYPE_QNAME.equals(name)) { + + // Read a <componentType> + componentType = assemblyFactory.createComponentType(); + componentType.setConstrainingType(readConstrainingType(reader)); + + } else if (Constants.SERVICE_QNAME.equals(name)) { + + // Read a <service> + service = assemblyFactory.createService(); + contract = service; + service.setName(getString(reader, Constants.NAME)); + componentType.getServices().add(service); + policyProcessor.readPolicies(service, reader); + + } else if (Constants.REFERENCE_QNAME.equals(name)) { + + // Read a <reference> + reference = assemblyFactory.createReference(); + contract = reference; + reference.setName(getString(reader, Constants.NAME)); + reference.setWiredByImpl(getBoolean(reader, Constants.WIRED_BY_IMPL)); + readMultiplicity(reference, reader); + readTargets(reference, reader); + componentType.getReferences().add(reference); + policyProcessor.readPolicies(reference, reader); + + } else if (Constants.PROPERTY_QNAME.equals(name)) { + + // Read a <property> + property = assemblyFactory.createProperty(); + readAbstractProperty(property, reader); + policyProcessor.readPolicies(property, reader); + + // Read the property value + Document value = readPropertyValue(property.getXSDElement(), property.getXSDType(), reader); + property.setValue(value); + + componentType.getProperties().add(property); + + } else if (Constants.IMPLEMENTATION_QNAME.equals(name)) { + + // Read an <implementation> element + policyProcessor.readPolicies(componentType, reader); + + } else if (Constants.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 = new OperationImpl(); + operation.setName(getString(reader, NAME)); + operation.setUnresolved(true); + if (callback != null) { + policyProcessor.readPolicies(callback, operation, reader); + } else { + policyProcessor.readPolicies(contract, operation, reader); + } + } else { + + // Read an extension element + Object extension = extensionProcessor.read(reader); + if (extension != null) { + if (extension instanceof InterfaceContract) { + + // <service><interface> and <reference><interface> + contract.setInterfaceContract((InterfaceContract)extension); + + } else if (extension instanceof Binding) { + + // <service><binding> and <reference><binding> + if (callback != null) { + callback.getBindings().add((Binding)extension); + } else { + contract.getBindings().add((Binding)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 (componentType instanceof Extensible) { + ((Extensible)componentType).getExtensions().add(extension); + } + } + } + } + } + break; + + case END_ELEMENT: + name = reader.getName(); + + // Clear current state when reading reaching end element + if (SERVICE_QNAME.equals(name)) { + service = null; + contract = null; + } else if (REFERENCE_QNAME.equals(name)) { + reference = null; + contract = null; + } else if (PROPERTY_QNAME.equals(name)) { + property = null; + } else if (CALLBACK_QNAME.equals(name)) { + callback = null; + } + break; + } + + // Read the next element + if (reader.hasNext()) { + reader.next(); + } + } + } + catch (XMLStreamException e) { + ContributionReadException ex = new ContributionReadException(e); + error("XMLStreamException", reader, ex); + } + + return componentType; + } + + public void write(ComponentType componentType, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { + + // Write <componentType> element + writeStartDocument(writer, COMPONENT_TYPE, + writeConstrainingType(componentType)); + + // Write <service> elements + for (Service service : componentType.getServices()) { + writeStart(writer, SERVICE, new XAttr(NAME, service.getName()), + policyProcessor.writePolicies(service)); + + if (service.getInterfaceContract() != null) { + extensionProcessor.write(service.getInterfaceContract(), writer); + } + + for (Binding binding: service.getBindings()) { + extensionProcessor.write(binding, writer); + } + + if (service.getCallback() != null) { + Callback callback = service.getCallback(); + writeStart(writer, CALLBACK, policyProcessor.writePolicies(callback)); + + for (Binding binding: callback.getBindings()) { + extensionProcessor.write(binding, writer); + } + for (Object extension: callback.getExtensions()) { + extensionProcessor.write(extension, writer); + } + + writeEnd(writer); + } + + for (Object extension: service.getExtensions()) { + extensionProcessor.write(extension, writer); + } + + writeEnd(writer); + } + + // Write <reference> elements + for (Reference reference : componentType.getReferences()) { + + writeStart(writer, REFERENCE, + new XAttr(NAME, reference.getName()), + writeMultiplicity(reference), + writeTargets(reference), + policyProcessor.writePolicies(reference)); + + extensionProcessor.write(reference.getInterfaceContract(), writer); + + for (Binding binding: reference.getBindings()) { + extensionProcessor.write(binding, writer); + } + + if (reference.getCallback() != null) { + Callback callback = reference.getCallback(); + writeStart(writer, CALLBACK, + policyProcessor.writePolicies(callback)); + + for (Binding binding: callback.getBindings()) { + extensionProcessor.write(binding, writer); + } + for (Object extension: callback.getExtensions()) { + extensionProcessor.write(extension, writer); + } + + writeEnd(writer); + } + + for (Object extension: reference.getExtensions()) { + extensionProcessor.write(extension, writer); + } + + writeEnd(writer); + } + + // Write <property> elements + for (Property property : componentType.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 extension elements + if (componentType instanceof Extensible) { + for (Object extension: ((Extensible)componentType).getExtensions()) { + extensionProcessor.write(extension, writer); + } + } + + // Write <implementation> elements if the componentType has + // any intents or policySets + boolean writeImplementation = false; + if (componentType instanceof IntentAttachPoint) { + if (!((IntentAttachPoint)componentType).getRequiredIntents().isEmpty()) { + writeImplementation = true; + } + } + if (componentType instanceof PolicySetAttachPoint) { + if (!((PolicySetAttachPoint)componentType).getPolicySets().isEmpty()) { + writeImplementation = true; + } + } + if (writeImplementation) { + writeStart(writer, IMPLEMENTATION, + policyProcessor.writePolicies(componentType)); + } + + writeEndDocument(writer); + } + + public void resolve(ComponentType componentType, ModelResolver resolver) throws ContributionResolveException { + + // Resolve component type services and references + resolveContracts(componentType.getServices(), resolver); + resolveContracts(componentType.getReferences(), resolver); + if ( componentType instanceof PolicySetAttachPoint ) { + resolveIntents(((PolicySetAttachPoint)componentType).getRequiredIntents(), resolver); + resolvePolicySets(((PolicySetAttachPoint)componentType).getPolicySets(), resolver); + } + } + + public QName getArtifactType() { + return COMPONENT_TYPE_QNAME; + } + + public Class<ComponentType> getModelType() { + return ComponentType.class; + } +} |