| /* |
| * 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.resource.impl; |
| |
| import static javax.xml.stream.XMLStreamConstants.START_ELEMENT; |
| |
| 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.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.contribution.resource.ResourceExport; |
| import org.apache.tuscany.sca.contribution.resource.ResourceImportExportFactory; |
| 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; |
| |
| /** |
| * Artifact processor for Resource export |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class ResourceExportProcessor implements StAXArtifactProcessor<ResourceExport> { |
| |
| private static final String URI = "uri"; |
| |
| private final ResourceImportExportFactory factory; |
| |
| public ResourceExportProcessor(FactoryExtensionPoint modelFactories) { |
| this.factory = modelFactories.getFactory(ResourceImportExportFactory.class); |
| } |
| |
| |
| /** |
| * 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-resource-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters); |
| monitor.problem(problem); |
| } |
| } |
| |
| public QName getArtifactType() { |
| return ResourceExport.TYPE; |
| } |
| |
| public Class<ResourceExport> getModelType() { |
| return ResourceExport.class; |
| } |
| |
| /** |
| * Process <export.resource uri=""/> |
| */ |
| public ResourceExport read(XMLStreamReader reader, ProcessorContext context) throws ContributionReadException { |
| ResourceExport resourceExport = this.factory.createResourceExport(); |
| QName element = null; |
| |
| try { |
| while (reader.hasNext()) { |
| int event = reader.getEventType(); |
| switch (event) { |
| case START_ELEMENT: |
| element = reader.getName(); |
| |
| // Read <export.resource> |
| if (ResourceExport.TYPE.equals(element)) { |
| String uri = reader.getAttributeValue(null, URI); |
| if (uri == null) { |
| error(context.getMonitor(), "AttributeURIMissing", reader); |
| //throw new ContributionReadException("Attribute 'uri' is missing"); |
| } else |
| resourceExport.setURI(uri); |
| } |
| |
| break; |
| case XMLStreamConstants.END_ELEMENT: |
| if (ResourceExport.TYPE.equals(reader.getName())) { |
| return resourceExport; |
| } |
| 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 resourceExport; |
| } |
| |
| public void write(ResourceExport resourceExport, XMLStreamWriter writer, ProcessorContext context) throws ContributionWriteException, XMLStreamException { |
| |
| // Write <export.resource> |
| writer.writeStartElement(ResourceExport.TYPE.getNamespaceURI(), ResourceExport.TYPE.getLocalPart()); |
| |
| if (resourceExport.getURI() != null) { |
| writer.writeAttribute(URI, resourceExport.getURI()); |
| } |
| |
| writer.writeEndElement(); |
| } |
| |
| public void resolve(ResourceExport resourceExport, ModelResolver resolver, ProcessorContext context) throws ContributionResolveException { |
| |
| if (resourceExport.getURI() != null) |
| // Initialize the export's model resolver |
| resourceExport.setModelResolver(new ResourceExportModelResolver(resourceExport, resolver)); |
| } |
| } |