diff options
Diffstat (limited to 'sca-java-1.x/tags/1.2/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java')
-rw-r--r-- | sca-java-1.x/tags/1.2/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.2/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java b/sca-java-1.x/tags/1.2/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java new file mode 100644 index 0000000000..5a7ab9d226 --- /dev/null +++ b/sca-java-1.x/tags/1.2/modules/contribution-xml/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java @@ -0,0 +1,176 @@ +/* + * 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.xml; + +import static javax.xml.stream.XMLStreamConstants.START_ELEMENT; + +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.AssemblyFactory; +import org.apache.tuscany.sca.assembly.Composite; +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.ContributionFactory; +import org.apache.tuscany.sca.contribution.Export; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor; +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; + +/** + * Processor for contribution metadata + * + * @version $Rev$ $Date$ + */ +public class ContributionMetadataProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<Contribution> { + + private static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0"; + + private static final QName CONTRIBUTION_QNAME = new QName(SCA10_NS, "contribution"); + private static final QName DEPLOYABLE_QNAME = new QName(SCA10_NS, "deployable"); + + private final AssemblyFactory assemblyFactory; + private final ContributionFactory contributionFactory; + + private final StAXArtifactProcessor<Object> extensionProcessor; + + public ContributionMetadataProcessor(AssemblyFactory assemblyFactory, ContributionFactory contributionFactory, StAXArtifactProcessor<Object> extensionProcessor) { + this.assemblyFactory = assemblyFactory; + this.contributionFactory = contributionFactory; + this.extensionProcessor = extensionProcessor; + } + + + public QName getArtifactType() { + return CONTRIBUTION_QNAME; + } + + public Class<Contribution> getModelType() { + return Contribution.class; + } + + public Contribution read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { + Contribution contribution = null; + QName name = null; + + while (reader.hasNext()) { + int event = reader.getEventType(); + switch (event) { + case START_ELEMENT: + name = reader.getName(); + + if (CONTRIBUTION_QNAME.equals(name)) { + + // Read <contribution> + contribution = this.contributionFactory.createContribution(); + contribution.setUnresolved(true); + + } else if (DEPLOYABLE_QNAME.equals(name)) { + + + // Read <deployable> + QName compositeName = getQName(reader, "composite"); + if (compositeName == null) { + throw new ContributionReadException("Attribute 'composite' is missing"); + } + + if (contribution != null) { + Composite composite = assemblyFactory.createComposite(); + composite.setName(compositeName); + composite.setUnresolved(true); + contribution.getDeployables().add(composite); + + } + } else{ + + // Read an extension element + Object extension = extensionProcessor.read(reader); + if (extension != null && contribution != null) { + if (extension instanceof Import) { + contribution.getImports().add((Import)extension); + } else if (extension instanceof Export) { + contribution.getExports().add((Export)extension); + } + } + } + break; + + case XMLStreamConstants.END_ELEMENT: + if (CONTRIBUTION_QNAME.equals(reader.getName())) { + return contribution; + } + break; + } + + //Read the next element + if (reader.hasNext()) { + reader.next(); + } + } + + return contribution; + } + + public void write(Contribution contribution, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { + + // Write <contribution> + writeStartDocument(writer, CONTRIBUTION_QNAME.getNamespaceURI(), CONTRIBUTION_QNAME.getLocalPart()); + + // Write <import> + for (Import imp: contribution.getImports()) { + extensionProcessor.write(imp, writer); + } + + // Write <export> + for (Export export: contribution.getExports()) { + extensionProcessor.write(export, writer); + } + + // Write <deployable> + for (Composite deployable: contribution.getDeployables()) { + writeStart(writer, DEPLOYABLE_QNAME.getNamespaceURI(), DEPLOYABLE_QNAME.getLocalPart(), + new XAttr("composite", deployable.getName())); + writeEnd(writer); + } + + writeEndDocument(writer); + } + + public void resolve(Contribution model, ModelResolver resolver) throws ContributionResolveException { + model.setUnresolved(false); + + // Resolve deployable composites + List<Composite> deployables = model.getDeployables(); + for (int i = 0, n = deployables.size(); i < n; i++) { + Composite deployable = deployables.get(i); + Composite resolved = (Composite)resolver.resolveModel(Composite.class, deployable); + if (resolved != deployable) { + deployables.set(i, resolved); + } + } + } +} |