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/*
* 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);
}
}
}
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