diff options
Diffstat (limited to 'tags/java/sca/2.0-M4-RC2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/definitions/xml/DefinitionsProcessor.java')
| -rw-r--r-- | tags/java/sca/2.0-M4-RC2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/definitions/xml/DefinitionsProcessor.java | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M4-RC2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/definitions/xml/DefinitionsProcessor.java b/tags/java/sca/2.0-M4-RC2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/definitions/xml/DefinitionsProcessor.java new file mode 100644 index 0000000000..b545e62469 --- /dev/null +++ b/tags/java/sca/2.0-M4-RC2/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/definitions/xml/DefinitionsProcessor.java @@ -0,0 +1,230 @@ +/* + * 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.definitions.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.XMLStreamConstants; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.processor.ContributionReadException; +import org.apache.tuscany.sca.contribution.processor.ContributionResolveException; +import org.apache.tuscany.sca.contribution.processor.ContributionWriteException; +import org.apache.tuscany.sca.contribution.processor.ProcessorContext; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.definitions.Definitions; +import org.apache.tuscany.sca.definitions.DefinitionsFactory; +import org.apache.tuscany.sca.policy.BindingType; +import org.apache.tuscany.sca.policy.ImplementationType; +import org.apache.tuscany.sca.policy.Intent; +import org.apache.tuscany.sca.policy.PolicySet; + +/** + * Processor for SCA Definitions + * + * @version $Rev$ $Date$ + */ +public class DefinitionsProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<Definitions> { + private StAXArtifactProcessor<Object> extensionProcessor; + private DefinitionsFactory definitionsFactory; + + public static final String SCA11_NS = "http://docs.oasis-open.org/ns/opencsa/sca/200903"; + public static final String BINDING = "binding"; + public static final String IMPLEMENTATION = "implementation"; + public static final String DEFINITIONS = "definitions"; + public static final QName DEFINITIONS_QNAME = new QName(SCA11_NS, DEFINITIONS); + public static final String TARGET_NAMESPACE = "targetNamespace"; + public static final String NAME = "name"; + + public DefinitionsProcessor(FactoryExtensionPoint factoryExtensionPoint, + StAXArtifactProcessor<Object> extensionProcessor) { + this.extensionProcessor = extensionProcessor; + this.definitionsFactory = factoryExtensionPoint.getFactory(DefinitionsFactory.class); + } + + public Definitions read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException, XMLStreamException { + QName name = null; + Definitions definitions = null; + String targetNamespace = null; + + while (reader.hasNext()) { + int event = reader.getEventType(); + switch (event) { + case START_ELEMENT: { + name = reader.getName(); + if (DEFINITIONS_QNAME.equals(name)) { + definitions = definitionsFactory.createDefinitions(); + targetNamespace = reader.getAttributeValue(null, TARGET_NAMESPACE); + definitions.setTargetNamespace(targetNamespace); + } else { + Object extension = extensionProcessor.read(reader, context); + if (extension != null) { + if (extension instanceof Intent) { + Intent intent = (Intent)extension; + intent.setName(new QName(targetNamespace, intent.getName().getLocalPart())); + definitions.getIntents().add(intent); + for (Intent i : intent.getQualifiedIntents()) { + i.setName(new QName(targetNamespace, i.getName().getLocalPart())); + } + } else if (extension instanceof PolicySet) { + PolicySet policySet = (PolicySet)extension; + policySet.setName(new QName(targetNamespace, policySet.getName().getLocalPart())); + definitions.getPolicySets().add(policySet); + } else if (extension instanceof Binding) { + Binding binding = (Binding)extension; + definitions.getBindings().add(binding); + } else if (extension instanceof BindingType) { + definitions.getBindingTypes().add((BindingType)extension); + } else if (extension instanceof ImplementationType) { + definitions.getImplementationTypes().add((ImplementationType)extension); + } + } + break; + } + } + + case XMLStreamConstants.CHARACTERS: + break; + + case END_ELEMENT: + name = reader.getName(); + if (DEFINITIONS_QNAME.equals(name)) { + return definitions; + } + break; + } + + //Read the next element + if (reader.hasNext()) { + reader.next(); + } + } + return definitions; + } + + public void write(Definitions definitions, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException, + XMLStreamException { + + writeStartDocument(writer, SCA11_NS, DEFINITIONS, new XAttr(TARGET_NAMESPACE, definitions.getTargetNamespace())); + + for (Intent policyIntent : definitions.getIntents()) { + extensionProcessor.write(policyIntent, writer, context); + } + + for (PolicySet policySet : definitions.getPolicySets()) { + extensionProcessor.write(policySet, writer, context); + } + + for (Binding binding : definitions.getBindings()) { + extensionProcessor.write(binding, writer, context); + } + + for (BindingType bindingType : definitions.getBindingTypes()) { + extensionProcessor.write(bindingType, writer, context); + } + + for (ImplementationType implType : definitions.getImplementationTypes()) { + extensionProcessor.write(implType, writer, context); + } + + writeEndDocument(writer); + } + + public void resolve(Definitions scaDefns, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { + // start by adding all of the top level artifacts into the resolver as there + // are many cross artifact references in a definitions file and we don't want + // to be dependent on the order things appear + + List<Intent> intents = new ArrayList<Intent>(); + List<PolicySet> policySets = new ArrayList<PolicySet>(); + List<PolicySet> referredPolicySets = new ArrayList<PolicySet>(); + + for (Intent intent : scaDefns.getIntents()) { + intents.add(intent); + resolver.addModel(intent, context); + for (Intent i : intent.getQualifiedIntents()) { + intents.add(i); + resolver.addModel(i, context); + } + } + + for (PolicySet policySet : scaDefns.getPolicySets()) { + if (policySet.getReferencedPolicySets().isEmpty()) { + policySets.add(policySet); + } else { + referredPolicySets.add(policySet); + } + + resolver.addModel(policySet, context); + } + + for (BindingType bindingType : scaDefns.getBindingTypes()) { + resolver.addModel(bindingType, context); + } + + for (ImplementationType implType : scaDefns.getImplementationTypes()) { + resolver.addModel(implType, context); + } + + // now resolve everything to ensure that any references between + // artifacts are satisfied + + for (Intent policyIntent : intents) + extensionProcessor.resolve(policyIntent, resolver, context); + + for (PolicySet policySet : policySets) + extensionProcessor.resolve(policySet, resolver, context); + + for (PolicySet policySet : referredPolicySets) + extensionProcessor.resolve(policySet, resolver, context); + + for (Binding binding : scaDefns.getBindings()) { + extensionProcessor.resolve(binding, resolver, context); + } + + for (BindingType bindingType : scaDefns.getBindingTypes()) { + extensionProcessor.resolve(bindingType, resolver, context); + } + + for (ImplementationType implementationType : scaDefns.getImplementationTypes()) { + extensionProcessor.resolve(implementationType, resolver, context); + } + } + + public QName getArtifactType() { + return DEFINITIONS_QNAME; + } + + public Class<Definitions> getModelType() { + return Definitions.class; + } + +} |