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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.bpel.impl;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+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.ode.bpel.compiler.BpelC;
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.xml.Constants;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+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.implementation.bpel.BPELImplementation;
+import org.apache.tuscany.sca.implementation.bpel.BPELImplementationFactory;
+import org.apache.tuscany.sca.implementation.bpel.DefaultBPELImplementationFactory;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLFactory;
+
+/**
+ * Implements a STAX artifact processor for BPEL implementations.
+ *
+ * The artifact processor is responsible for processing <implementation.bpel>
+ * elements in SCA assembly XML composite files and populating the BPEL
+ * implementation model, resolving its references to other artifacts in the SCA
+ * contribution, and optionally write the model back to SCA assembly XML.
+ *
+ * @version $Rev$ $Date$
+ */
+public class BPELArtifactProcessor implements StAXArtifactProcessor<BPELImplementation> {
+ private static final QName IMPLEMENTATION_BPEL = new QName(Constants.SCA10_TUSCANY_NS, "implementation.bpel");
+
+ private BPELImplementationFactory bpelFactory;
+
+ public BPELArtifactProcessor(ModelFactoryExtensionPoint modelFactories) {
+ AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+ WSDLFactory wsdlFactory = modelFactories.getFactory(WSDLFactory.class);
+ this.bpelFactory = new DefaultBPELImplementationFactory(assemblyFactory, wsdlFactory);
+ }
+
+ public QName getArtifactType() {
+ // Returns the qname of the XML element processed by this processor
+ return IMPLEMENTATION_BPEL;
+ }
+
+ public Class<BPELImplementation> getModelType() {
+ // Returns the type of model processed by this processor
+ return BPELImplementation.class;
+ }
+
+ public BPELImplementation read(XMLStreamReader reader) throws ContributionReadException {
+ assert IMPLEMENTATION_BPEL.equals(reader.getName());
+
+ // Read an <implementation.bpel> element
+ try {
+ // Read the process attribute.
+ QName process = getAttributeValueNS(reader, "process");
+ String bpelFile = reader.getAttributeValue(null, "file");
+
+ // Resolving the BPEL file and compiling it
+ URL bpelURL = getClass().getClassLoader().getResource(bpelFile);
+ if (bpelURL == null)
+ throw new ODEProcessException("Couldn't find referenced bpel file " + bpelFile);
+ BpelC bpelc = BpelC.newBpelCompiler();
+ ByteArrayOutputStream compiledProcess = new ByteArrayOutputStream();
+ bpelc.setOutputStream(compiledProcess);
+ try {
+ bpelc.compile(new File(bpelURL.getFile()));
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+
+ // Create an initialize the BPEL implementation model
+ BPELImplementation implementation = bpelFactory.createBPELImplementation();
+ implementation.setProcessName(process);
+ implementation.setCompiledProcess(compiledProcess.toByteArray());
+ implementation.setUnresolved(false);
+
+ // Skip to end element
+ while (reader.hasNext()) {
+ if (reader.next() == END_ELEMENT && IMPLEMENTATION_BPEL.equals(reader.getName())) {
+ break;
+ }
+ }
+
+ return implementation;
+ } catch (XMLStreamException e) {
+ throw new ContributionReadException(e);
+ }
+ }
+
+ public void resolve(BPELImplementation impl, ModelResolver resolver) throws ContributionResolveException {
+ System.out.println("IN RESOLVE");
+ if( impl != null && impl.isUnresolved()) {
+
+ impl.setUnresolved(false);
+ }
+
+ }
+
+ public void write(BPELImplementation model, XMLStreamWriter outputSource) throws ContributionWriteException {
+ }
+
+ private QName getAttributeValueNS(XMLStreamReader reader, String attribute) {
+ String fullValue = reader.getAttributeValue(null, "process");
+ if (fullValue.indexOf(":") < 0)
+ throw new ODEProcessException("Attribute " + attribute + " with value " + fullValue +
+ " in your composite should be prefixed (process=\"prefix:name\").");
+ String prefix = fullValue.substring(0, fullValue.indexOf(":"));
+ String name = fullValue.substring(fullValue.indexOf(":") + 1);
+ String nsUri = reader.getNamespaceContext().getNamespaceURI(prefix);
+ if (nsUri == null)
+ throw new ODEProcessException("Attribute " + attribute + " with value " + fullValue +
+ " in your composite has un unrecognized namespace prefix.");
+ return new QName(nsUri, name, prefix);
+ }
+}