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Diffstat (limited to 'sca-java-1.x/branches/sca-java-0.91/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java')
| -rw-r--r-- | sca-java-1.x/branches/sca-java-0.91/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.91/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java b/sca-java-1.x/branches/sca-java-0.91/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java new file mode 100644 index 0000000000..386842e8d6 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.91/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/ComponentTypeProcessor.java @@ -0,0 +1,271 @@ +/* + * 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 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.Base; +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.Property; +import org.apache.tuscany.sca.assembly.Reference; +import org.apache.tuscany.sca.assembly.Service; +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.Operation; +import org.apache.tuscany.sca.policy.PolicyFactory; + +/** + * A componentType processor. + * + * @version $Rev$ $Date$ + */ +public class ComponentTypeProcessor extends BaseArtifactProcessor implements StAXArtifactProcessor<ComponentType> { + + /** + * Constructs a new componentType processor. + * @param factory + * @param policyFactory + * @param registry + */ + public ComponentTypeProcessor(AssemblyFactory factory, PolicyFactory policyFactory, StAXArtifactProcessor extensionProcessor) { + super(factory, policyFactory, extensionProcessor); + } + + 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(getConstrainingType(reader)); + readPolicies(componentType, 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); + 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); + readPolicies(reference, reader); + + } else if (Constants.PROPERTY_QNAME.equals(name)) { + + // Read a <property> + property = assemblyFactory.createProperty(); + readPolicies(property, reader); + readProperty(property, reader); + componentType.getProperties().add(property); + + } else if (Constants.CALLBACK_QNAME.equals(name)) { + + // Read a <callback> + callback = assemblyFactory.createCallback(); + contract.setCallback(callback); + readPolicies(callback, reader); + + } else if (OPERATION.equals(name)) { + + // Read an <operation> + Operation operation = assemblyFactory.createOperation(); + operation.setName(getString(reader, NAME)); + operation.setUnresolved(true); + if (callback != null) { + readPolicies(callback, operation, reader); + } else { + 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> + contract.getBindings().add((Binding)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) { + throw new ContributionReadException(e); + } + return componentType; + } + + public void validate(ComponentType componentType, List<Base> problems) { + if (problems == null) { + problems = new ArrayList<Base>(); + } + validatePropertyDefinitions(componentType.getProperties(), problems); + } + + public void validatePropertyDefinitions(List<Property> properties, List<Base> problems) { + for(Property aProperty : properties) { + if (aProperty.isMustSupply() && aProperty.getValue() != null) { + problems.add(aProperty); + } + } + } + + public void write(ComponentType componentType, XMLStreamWriter writer) throws ContributionWriteException { + + try { + writeStartDocument(writer, COMPONENT_TYPE, + new XAttr(CONSTRAINING_TYPE, getConstrainingTypeAttr(componentType))); + + for (Service service : componentType.getServices()) { + writeStart(writer, SERVICE, new XAttr(NAME, service.getName())); + + extensionProcessor.write(service.getInterfaceContract(), writer); + + for (Binding binding: service.getBindings()) { + extensionProcessor.write(binding, writer); + } + + if (service.getCallback() != null) { + writeStart(writer, CALLBACK); + writeEnd(writer); + } + writeEnd(writer); + } + + for (Reference reference : componentType.getReferences()) { + // TODO handle multivalued target attribute + String target = reference.getTargets().isEmpty() ? null : reference.getTargets().get(0).getName(); + writeStart(writer, REFERENCE, + new XAttr(NAME, reference.getName()), + new XAttr(TARGET, target)); + + extensionProcessor.write(reference.getInterfaceContract(), writer); + + for (Binding binding: reference.getBindings()) { + extensionProcessor.write(binding, writer); + } + + if (reference.getCallback() != null) { + writeStart(writer, CALLBACK); + writeEnd(writer); + } + writeEnd(writer); + } + + for (Property property : componentType.getProperties()) { + writeStart(writer, PROPERTY, new XAttr(NAME, property.getName())); + writeEnd(writer); + } + + writeEndDocument(writer); + + } catch (XMLStreamException e) { + throw new ContributionWriteException(e); + } + } + + public void resolve(ComponentType componentType, ModelResolver resolver) throws ContributionResolveException { + + // Resolve component type services and references + resolveContracts(componentType.getServices(), resolver); + resolveContracts(componentType.getReferences(), resolver); + } + + public QName getArtifactType() { + return COMPONENT_TYPE_QNAME; + } + + public Class<ComponentType> getModelType() { + return ComponentType.class; + } +} |