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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 java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor;
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.implementation.bpel.BPELFactory;
import org.apache.tuscany.sca.implementation.bpel.BPELProcessDefinition;
/**
* BPEL document processor responsible for reading a BPEL file and producing necessary model info about it
*
* @version $Rev$ $Date$
*/
public class BPELDocumentProcessor extends BaseStAXArtifactProcessor implements URLArtifactProcessor<BPELProcessDefinition> {
public final static QName BPEL_PROCESS_DEFINITION = new QName("http://schemas.xmlsoap.org/ws/2004/03/business-process/", "process");
public final static QName BPEL_EXECUTABLE_DEFINITION = new QName("http://docs.oasis-open.org/wsbpel/2.0/process/executable", "process");
public final static String NAME_ELEMENT = "name";
private final static XMLInputFactory inputFactory = XMLInputFactory.newInstance();
private final BPELFactory factory;
public BPELDocumentProcessor(ModelFactoryExtensionPoint modelFactories) {
this.factory = modelFactories.getFactory(BPELFactory.class);
}
public String getArtifactType() {
return "*.bpel";
}
public Class<BPELProcessDefinition> getModelType() {
return BPELProcessDefinition.class;
}
public BPELProcessDefinition read(URL contributionURL, URI artifactURI, URL artifactURL) throws ContributionReadException {
BPELProcessDefinition processDefinition = null;
try {
//for now we are just using process name
//and relying on componentType file for service definition
//so it's ok to set resolved for now
processDefinition = indexRead(artifactURL);
processDefinition.setURI(artifactURI);
processDefinition.setUnresolved(false);
} catch (Exception e) {
throw new ContributionReadException(e);
}
return processDefinition;
}
public void resolve(BPELProcessDefinition model, ModelResolver resolver) throws ContributionResolveException {
}
/**
* Read the namespace for the WSDL definition and inline schemas
*
* @param doc
* @return
* @throws IOException
* @throws XMLStreamException
*/
protected BPELProcessDefinition indexRead(URL doc) throws Exception {
BPELProcessDefinition processDefinition = factory.createBPELProcessDefinition();
processDefinition.setUnresolved(true);
processDefinition.setLocation(doc);
InputStream is = doc.openStream();
XMLStreamReader reader = null;
try {
reader = inputFactory.createXMLStreamReader(is);
int eventType = reader.getEventType();
while (true) {
if (eventType == XMLStreamConstants.START_ELEMENT) {
QName elementName = reader.getName();
if (BPEL_PROCESS_DEFINITION.equals(elementName) || BPEL_EXECUTABLE_DEFINITION.equals(elementName) ) {
QName processName = new QName(getString(reader, org.apache.tuscany.sca.assembly.xml.Constants.TARGET_NAMESPACE), getString(reader, NAME_ELEMENT));
processDefinition.setName(processName);
break;
}
}
if (reader.hasNext()) {
eventType = reader.next();
} else {
break;
}
}
} finally {
if(reader != null) {
reader.close();
}
is.close();
}
return processDefinition;
}
}
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