diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java b/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java new file mode 100644 index 0000000000..823684f422 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/xml/ContributionMetadataProcessor.java @@ -0,0 +1,270 @@ +/* + * 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.ContributionFactory; +import org.apache.tuscany.sca.contribution.ContributionMetadata; +import org.apache.tuscany.sca.contribution.Export; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.java.JavaImport; +import org.apache.tuscany.sca.contribution.java.JavaExport; +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.processor.StAXAttributeProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; + +/** + * Processor for contribution metadata + * + * @version $Rev$ $Date$ + */ +public class ContributionMetadataProcessor extends BaseStAXArtifactProcessor implements + StAXArtifactProcessor<ContributionMetadata> { + private static final String SCA11_NS = "http://docs.oasis-open.org/ns/opencsa/sca/200912"; + + private static final QName CONTRIBUTION_QNAME = new QName(SCA11_NS, "contribution"); + private static final QName DEPLOYABLE_QNAME = new QName(SCA11_NS, "deployable"); + + private final AssemblyFactory assemblyFactory; + private final ContributionFactory contributionFactory; + private final StAXArtifactProcessor<Object> extensionProcessor; + private final StAXAttributeProcessor<Object> attributeProcessor; + + + public ContributionMetadataProcessor(FactoryExtensionPoint modelFactories, + StAXArtifactProcessor<Object> extensionProcessor, + StAXAttributeProcessor<Object> attributeProcessor) { + this.assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + this.contributionFactory = modelFactories.getFactory(ContributionFactory.class); + this.extensionProcessor = extensionProcessor; + this.attributeProcessor = attributeProcessor; + } + + /** + * Report a error. + * + * @param problems + * @param message + * @param model + */ + private void error(Monitor monitor, String message, Object model, Object... messageParameters) { + if (monitor != null) { + Problem problem = + monitor.createProblem(this.getClass().getName(), + "contribution-xml-validation-messages", + Severity.ERROR, + model, + message, + (Object[])messageParameters); + monitor.problem(problem); + } + } + + /** + * Report a exception. + * + * @param problems + * @param message + * @param model + */ + private void error(Monitor monitor, String message, Object model, Exception ex) { + if (monitor != null) { + Problem problem = + monitor.createProblem(this.getClass().getName(), "contribution-xml-validation-messages", Severity.ERROR, + model, message, ex); + monitor.problem(problem); + } + } + + public QName getArtifactType() { + return CONTRIBUTION_QNAME; + } + + public Class<ContributionMetadata> getModelType() { + return ContributionMetadata.class; + } + + public ContributionMetadata read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException { + ContributionMetadata contribution = null; + QName name = null; + + try { + 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.createContributionMetadata(); + contribution.setSpecVersion(SCA11_NS); + contribution.setUnresolved(true); + readExtendedAttributes(reader, contribution, attributeProcessor, assemblyFactory, context); + + } else if (DEPLOYABLE_QNAME.equals(name)) { + + // Read <deployable> + QName compositeName = getQName(reader, "composite"); + if (compositeName == null) { + error(context.getMonitor(), "AttributeCompositeMissing", reader); + //throw new ContributionReadException("Attribute 'composite' is missing"); + } else { + 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, context); + if (extension != null && contribution != null) { + if (extension instanceof Import) { + // The value of the @package attribute on the <import.java/> element MUST be + // unique across all other <import.java/> elements within the contribution. + if (extension instanceof JavaImport) { + for (Import imports : contribution.getImports()) { + if (imports instanceof JavaImport) { + if (((JavaImport)extension).getPackage().equals(((JavaImport) imports).getPackage())) { + error(context.getMonitor(), "DuplicateJavaImports", reader); + } + } + } + } + contribution.getImports().add((Import)extension); + } else if (extension instanceof Export) { + // The value of the @package attribute on the <export.java/> element MUST be + // unique across all other <export.java/> elements within the contribution. + if (extension instanceof JavaExport) { + for (Export exports : contribution.getExports()) { + if (exports instanceof JavaExport) { + if (((JavaExport)extension).getPackage().equals(((JavaExport) exports).getPackage())) { + error(context.getMonitor(), "DuplicateJavaExports", reader); + } + } + } + } + contribution.getExports().add((Export)extension); + } else { + contribution.getExtensions().add(extension); + } + } + } + break; + + case XMLStreamConstants.END_ELEMENT: + if (CONTRIBUTION_QNAME.equals(reader.getName())) { + return contribution; + } + break; + } + + //Read the next element + if (reader.hasNext()) { + reader.next(); + } + } + } catch (XMLStreamException e) { + ContributionReadException ex = new ContributionReadException(e); + error(context.getMonitor(), "XMLStreamException", reader, ex); + } + + return contribution; + } + + public void write(ContributionMetadata contribution, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException, + XMLStreamException { + + // Write <contribution> + writeStartDocument(writer, CONTRIBUTION_QNAME.getNamespaceURI(), CONTRIBUTION_QNAME.getLocalPart()); + writeExtendedAttributes(writer, contribution, attributeProcessor, context); + + // Write <import> + for (Import imp : contribution.getImports()) { + extensionProcessor.write(imp, writer, context); + } + + // Write <export> + for (Export export : contribution.getExports()) { + extensionProcessor.write(export, writer, context); + } + + // 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(ContributionMetadata contribution, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { + + // Resolve imports and exports + for (Export export : contribution.getExports()) { + extensionProcessor.resolve(export, resolver, context); + } + for (Import import_ : contribution.getImports()) { + extensionProcessor.resolve(import_, resolver, context); + } + + // Resolve deployable composites + List<Composite> deployables = contribution.getDeployables(); + for (int i = 0, n = deployables.size(); i < n; i++) { + Composite deployable = deployables.get(i); + Composite resolved = (Composite)resolver.resolveModel(Composite.class, deployable, context); + if (resolved != deployable) { + deployables.set(i, resolved); + } + } + + for (Object ext : contribution.getExtensions()) { + extensionProcessor.resolve(ext, resolver, context); + } + + contribution.setUnresolved(false); + } +} |