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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/xml/ScriptImplementationProcessor.java | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/xml/ScriptImplementationProcessor.java b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/xml/ScriptImplementationProcessor.java new file mode 100644 index 0000000000..a3f302d4fc --- /dev/null +++ b/sca-java-2.x/tags/2.0-Beta1-RC2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/xml/ScriptImplementationProcessor.java @@ -0,0 +1,167 @@ +/* + * 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.implementation.script.xml; + +import static javax.xml.stream.XMLStreamConstants.END_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.ComponentType; +import org.apache.tuscany.sca.contribution.Artifact; +import org.apache.tuscany.sca.contribution.ContributionFactory; +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.ExtensionPointRegistry; +import org.apache.tuscany.sca.core.FactoryExtensionPoint; +import org.apache.tuscany.sca.implementation.script.ScriptImplementation; +import org.apache.tuscany.sca.implementation.script.ScriptImplementationFactory; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; + +/** + * ScriptImplementationProcessor + * + * @version $Rev$ $Date$ + */ +public class ScriptImplementationProcessor implements StAXArtifactProcessor<ScriptImplementation> { + private static final QName IMPLEMENTATION_SCRIPT = ScriptImplementation.TYPE; + + private AssemblyFactory assemblyFactory; + private ContributionFactory contributionFactory; + private ScriptImplementationFactory scriptImplementationFactory; + + public ScriptImplementationProcessor(ExtensionPointRegistry registry) { + FactoryExtensionPoint modelFactories = registry.getExtensionPoint(FactoryExtensionPoint.class); + assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + contributionFactory = modelFactories.getFactory(ContributionFactory.class); + scriptImplementationFactory = modelFactories.getFactory(ScriptImplementationFactory.class); + } + + public QName getArtifactType() { + return IMPLEMENTATION_SCRIPT; + } + + public Class<ScriptImplementation> getModelType() { + return ScriptImplementation.class; + } + + public ScriptImplementation read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException, XMLStreamException { + + // Read an <implementation.script> element + + // Create and initialize the script implementation model + ScriptImplementation implementation = scriptImplementationFactory.createScriptImplementation(); + implementation.setUnresolved(true); + + // Read the script attribute + String script = reader.getAttributeValue(null, "script"); + if (script != null) { + implementation.setScript(script); + } + + // Read the language attribute + String language = reader.getAttributeValue(null, "language"); + if (language != null) { + implementation.setLanguage(language); + } + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && IMPLEMENTATION_SCRIPT.equals(reader.getName())) { + break; + } + } + + return implementation; + } + + public void resolve(ScriptImplementation implementation, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { + + // Resolve the script location + if (implementation.getScript() != null) { + Artifact artifact = contributionFactory.createArtifact(); + artifact.setURI(implementation.getScript()); + Artifact resolved = resolver.resolveModel(Artifact.class, artifact, context); + if (resolved.getLocation() != null) { + implementation.setLocation(resolved.getLocation()); + } else { + error(context.getMonitor(), "CouldNotResolveScript", resolver, implementation.getScript()); + } + + // Resolve the componentType and add the declared properties, references + // and services to the implementation + String componentTypeURI = implementation.getScript(); + componentTypeURI = componentTypeURI.substring(0, componentTypeURI.lastIndexOf('.')); + componentTypeURI += ".componentType"; + ComponentType componentType = assemblyFactory.createComponentType(); + componentType.setUnresolved(true); + componentType.setURI(componentTypeURI); + componentType = resolver.resolveModel(ComponentType.class, componentType, context); + if (!componentType.isUnresolved()) { + implementation.getProperties().addAll(componentType.getProperties()); + implementation.getReferences().addAll(componentType.getReferences()); + implementation.getServices().addAll(componentType.getServices()); + } + } + + implementation.setUnresolved(false); + } + + public void write(ScriptImplementation implementation, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException, XMLStreamException { + + // Write <implementation.script> + writer.setPrefix("script", IMPLEMENTATION_SCRIPT.getNamespaceURI()); + writer.writeStartElement(IMPLEMENTATION_SCRIPT.getNamespaceURI(), IMPLEMENTATION_SCRIPT.getLocalPart()); + writer.writeNamespace("script", IMPLEMENTATION_SCRIPT.getNamespaceURI()); + + if (implementation.getScript() != null) { + writer.writeAttribute("script", implementation.getScript()); + } + if (implementation.getLanguage() != null) { + writer.writeAttribute("language", implementation.getLanguage()); + } + + writer.writeEndElement(); + } + + /** + * 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(), "impl-script-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); + monitor.problem(problem); + } + } + +} |