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Diffstat (limited to '')
-rw-r--r-- | sca-java-1.x/tags/1.6.1-RC1/modules/implementation-widget/src/main/java/org/apache/tuscany/sca/implementation/widget/WidgetImplementationProcessor.java | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6.1-RC1/modules/implementation-widget/src/main/java/org/apache/tuscany/sca/implementation/widget/WidgetImplementationProcessor.java b/sca-java-1.x/tags/1.6.1-RC1/modules/implementation-widget/src/main/java/org/apache/tuscany/sca/implementation/widget/WidgetImplementationProcessor.java new file mode 100644 index 0000000000..23b188fc96 --- /dev/null +++ b/sca-java-1.x/tags/1.6.1-RC1/modules/implementation-widget/src/main/java/org/apache/tuscany/sca/implementation/widget/WidgetImplementationProcessor.java @@ -0,0 +1,172 @@ +/* + * 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.widget; + +import static javax.xml.stream.XMLStreamConstants.END_ELEMENT; + +import java.io.IOException; +import java.net.URL; + +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.xml.Constants; +import org.apache.tuscany.sca.contribution.Artifact; +import org.apache.tuscany.sca.contribution.ContributionFactory; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +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; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; + +/** + * + * Implements a StAX artifact processor for Widget implementations. + * + * @version $Rev$ $Date$ + */ +public class WidgetImplementationProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<WidgetImplementation> { + private static final QName IMPLEMENTATION_WIDGET = new QName(Constants.SCA10_TUSCANY_NS, "implementation.widget"); + + private AssemblyFactory assemblyFactory; + private ContributionFactory contributionFactory; + private WidgetImplementationFactory implementationFactory; + private Monitor monitor; + + public WidgetImplementationProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) { + assemblyFactory = modelFactories.getFactory(AssemblyFactory.class); + contributionFactory = modelFactories.getFactory(ContributionFactory.class); + implementationFactory = modelFactories.getFactory(WidgetImplementationFactory.class); + this.monitor = monitor; + } + + /** + * Report a exception. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Exception ex) { + if (monitor != null) { + Problem problem = monitor.createProblem(this.getClass().getName(), "impl-widget-validation-messages", Severity.ERROR, model, message, ex); + monitor.problem(problem); + } + } + + /** + * Report a error. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Object... messageParameters) { + if (monitor != null) { + Problem problem = monitor.createProblem(this.getClass().getName(), "impl-widget-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); + monitor.problem(problem); + } + } + + public QName getArtifactType() { + // Returns the QName of the XML element processed by this processor + return IMPLEMENTATION_WIDGET; + } + + public Class<WidgetImplementation> getModelType() { + // Returns the type of model processed by this processor + return WidgetImplementation.class; + } + + public WidgetImplementation read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { + + // Read an <implementation.widget> element + + // Create and initialize the resource implementation model + WidgetImplementation implementation = null; + + // Read the location attribute specifying the location of the resources + String location = getURIString(reader, "location"); + if (location != null) { + implementation = implementationFactory.createWidgetImplementation(); + implementation.setLocation(location); + implementation.setUnresolved(true); + } else { + error("LocationAttributeMissing", reader); + //throw new ContributionReadException(MSG_LOCATION_MISSING); + } + + // Skip to end element + while (reader.hasNext()) { + if (reader.next() == END_ELEMENT && IMPLEMENTATION_WIDGET.equals(reader.getName())) { + break; + } + } + + return implementation; + } + + public void resolve(WidgetImplementation implementation, ModelResolver resolver) throws ContributionResolveException { + + if (implementation != null) { + // Resolve the resource directory location + Artifact artifact = contributionFactory.createArtifact(); + artifact.setURI(implementation.getLocation()); + Artifact resolved = resolver.resolveModel(Artifact.class, artifact); + if (resolved.getLocation() != null) { + try { + implementation.setLocationURL(new URL(resolved.getLocation())); + + //introspect implementation + WidgetImplementationIntrospector widgetIntrospector = + new WidgetImplementationIntrospector(assemblyFactory, implementation); + widgetIntrospector.introspectImplementation(); + + implementation.setUnresolved(false); + } catch (IOException e) { + ContributionResolveException ce = new ContributionResolveException(e); + error("ContributionResolveException", resolver, ce); + //throw ce; + } + } else { + error("CouldNotResolveLocation", resolver, implementation.getLocation()); + //throw new ContributionResolveException("Could not resolve implementation.widget location: " + implementation.getLocation()); + } + } + } + + public void write(WidgetImplementation implementation, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { + // Write <implementation.widget> + writeStart(writer, IMPLEMENTATION_WIDGET.getNamespaceURI(), IMPLEMENTATION_WIDGET.getLocalPart()); + + if (implementation.getLocation() != null) { + writer.writeAttribute("location", implementation.getLocation()); + } + + writeEnd(writer); + } +} |