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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.assembly.xml;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.util.Collection;
import java.util.List;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sca.assembly.Composite;
import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.ValidatingXMLInputFactory;
import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
import org.apache.tuscany.sca.core.FactoryExtensionPoint;
import org.apache.tuscany.sca.monitor.Monitor;
import org.apache.tuscany.sca.policy.PolicySet;
import org.apache.tuscany.sca.policy.util.PolicyComputationUtils;
/**
* A composite processor.
*
* @version $Rev$ $Date$
*/
public class CompositeDocumentProcessor extends BaseAssemblyProcessor implements URLArtifactProcessor<Composite> {
private XMLInputFactory inputFactory;
private DocumentBuilderFactory documentBuilderFactory;
private List scaDefnSink;
private Collection<PolicySet> domainPolicySets = null;
private int scaDefnsCount = 0;
/**
* Constructs a new composite processor.
* @param modelFactories
* @param staxProcessor
*/
public CompositeDocumentProcessor(FactoryExtensionPoint modelFactories,
StAXArtifactProcessor staxProcessor,
Monitor monitor) {
super(modelFactories, staxProcessor, monitor);
this.inputFactory = modelFactories.getFactory(ValidatingXMLInputFactory.class);
this.documentBuilderFactory = modelFactories.getFactory(DocumentBuilderFactory.class);
}
public Composite read(URL contributionURL, URI uri, URL url) throws ContributionReadException {
InputStream scdlStream = null;
try {
URLConnection connection = url.openConnection();
connection.setUseCaches(false);
scdlStream = connection.getInputStream();
} catch (IOException e) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", url, ce);
throw ce;
}
return read(uri, scdlStream);
}
public Composite read(URI uri, InputStream scdlStream) throws ContributionReadException {
try {
/*
if (scaDefnSink != null ) {
fillDomainPolicySets(scaDefnSink);
}
*/
Composite composite = null;
byte[] transformedArtifactContent;
try {
if ( domainPolicySets != null ) {
transformedArtifactContent =
PolicyComputationUtils.addApplicablePolicySets(scdlStream, domainPolicySets, documentBuilderFactory);
scdlStream = new ByteArrayInputStream(transformedArtifactContent);
}
} catch ( IOException e ) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", scdlStream, ce);
throw ce;
} catch ( Exception e ) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", scdlStream, ce);
//throw ce;
}
XMLStreamReader reader = inputFactory.createXMLStreamReader(scdlStream);
reader.nextTag();
// Read the composite model
composite = (Composite)extensionProcessor.read(reader);
if (composite != null) {
composite.setURI(uri.toString());
}
// For debugging purposes, write it back to XML
// if (composite != null) {
// try {
// ByteArrayOutputStream bos = new ByteArrayOutputStream();
// XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
// outputFactory.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, Boolean.TRUE);
// extensionProcessor.write(composite, outputFactory.createXMLStreamWriter(bos));
// Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new ByteArrayInputStream(bos.toByteArray()));
// OutputFormat format = new OutputFormat();
// format.setIndenting(true);
// format.setIndent(2);
// XMLSerializer serializer = new XMLSerializer(System.out, format);
// serializer.serialize(document);
// } catch (Exception e) {
// e.printStackTrace();
// }
// }
return composite;
} catch (XMLStreamException e) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", inputFactory, ce);
throw ce;
} finally {
try {
if (scdlStream != null) {
scdlStream.close();
scdlStream = null;
}
} catch (IOException ioe) {
//ignore
}
}
}
public void resolve(Composite composite, ModelResolver resolver) throws ContributionResolveException {
if (composite != null)
extensionProcessor.resolve(composite, resolver);
}
public String getArtifactType() {
return ".composite";
}
public Class<Composite> getModelType() {
return Composite.class;
}
/*
* TODO - remove - definitions information is now aggregated in the
* systems definitions contribution and we need to add
* applicable policy sets once all composites have been read
private void fillDomainPolicySets(List scaDefnsSink) {
Map<QName, PolicySet> domainPolicySetMap = null;
if ( scaDefnsSink.size() > scaDefnsCount ) {
//if ( !scaDefnsSink.isEmpty() ) {
domainPolicySetMap = new Hashtable<QName, PolicySet>();
if ( domainPolicySets != null ) {
for ( PolicySet policySet : domainPolicySets ) {
domainPolicySetMap.put(policySet.getName(), policySet);
}
}
for ( Object object : scaDefnsSink ) {
if ( object instanceof Definitions ) {
for ( PolicySet policySet : ((Definitions)object).getPolicySets() ) {
domainPolicySetMap.put( policySet.getName(), policySet);
}
}
}
domainPolicySets = domainPolicySetMap.values();
//scaDefnsSink.clear();
scaDefnsCount = scaDefnsSink.size();
}
}
*/
}
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