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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.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sca.assembly.ConstrainingType;
import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
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.contribution.service.ContributionReadException;
import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
import org.apache.tuscany.sca.monitor.Monitor;
/**
* A contrainingType content handler.
*
* @version $Rev$ $Date$
*/
public class ConstrainingTypeDocumentProcessor extends BaseAssemblyProcessor implements URLArtifactProcessor<ConstrainingType> {
private XMLInputFactory inputFactory;
/**
* Construct a new constrainingType processor.
*
* @param staxProcessor
* @param inputFactory
* @param monitor
*/
public ConstrainingTypeDocumentProcessor(StAXArtifactProcessor staxProcessor,
XMLInputFactory inputFactory,
Monitor monitor) {
super(null, null, null, staxProcessor, null, monitor);
this.inputFactory = inputFactory;
}
/**
* Constructs a new constrainingType processor.
* @param modelFactories
* @param staxProcessor
* @param monitor
*/
public ConstrainingTypeDocumentProcessor(ModelFactoryExtensionPoint modelFactories,
StAXArtifactProcessor staxProcessor,
Monitor monitor) {
super(null, null, null, staxProcessor, null, monitor);
this.inputFactory = modelFactories.getFactory(ValidatingXMLInputFactory.class);
}
public ConstrainingType read(URL contributionURL, URI uri, URL url) throws ContributionReadException {
InputStream urlStream = null;
try {
// Create a stream reader
URLConnection connection = url.openConnection();
connection.setUseCaches(false);
urlStream = connection.getInputStream();
XMLStreamReader reader = inputFactory.createXMLStreamReader(url.toString(), urlStream);
reader.nextTag();
// Read the constrainingType model
ConstrainingType constrainingType = (ConstrainingType)extensionProcessor.read(reader);
// For debugging purposes, write it back to XML
// if (constrainingType != null) {
// try {
// ByteArrayOutputStream bos = new ByteArrayOutputStream();
// XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
// outputFactory.setProperty(XMLOutputFactory.IS_REPAIRING_NAMESPACES, Boolean.TRUE);
// extensionProcessor.write(constrainingType, 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 constrainingType;
} catch (XMLStreamException e) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", inputFactory, ce);
throw ce;
} catch (IOException e) {
ContributionReadException ce = new ContributionReadException(e);
error("ContributionReadException", inputFactory, ce);
throw ce;
} finally {
try {
if (urlStream != null) {
urlStream.close();
urlStream = null;
}
} catch (IOException ioe) {
//ignore
}
}
}
public void resolve(ConstrainingType constrainingType, ModelResolver resolver) throws ContributionResolveException {
extensionProcessor.resolve(constrainingType, resolver);
}
public String getArtifactType() {
return ".constrainingType";
}
public Class<ConstrainingType> getModelType() {
return ConstrainingType.class;
}
}
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