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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.imprt.xyz;
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.assembly.ExtensionFactory;
import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl;
import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
import org.apache.tuscany.sca.contribution.namespace.NamespaceImportExportFactory;
import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
import org.apache.tuscany.sca.contribution.processor.StAXAttributeProcessor;
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.monitor.Monitor;
import org.apache.tuscany.sca.monitor.Problem;
import org.apache.tuscany.sca.monitor.Problem.Severity;
/**
* Artifact processor for Namespace import
*
* @version $Rev$ $Date$
*/
public class ImportXYZProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<ImportXYZ> {
private static final String NS = "http://someuri";
private static final QName IMPORT = new QName(NS, "import.xyz");
private static final String URI = "uri";
private static final String AN_ATTRIBUTE = "anAttribute";
private final ImportExportXYZFactory factory;
private final ExtensionFactory extensionFactory;
private final Monitor monitor;
public ImportXYZProcessor(ModelFactoryExtensionPoint modelFactories,
Monitor monitor) {
this.factory = modelFactories.getFactory(ImportExportXYZFactory.class);
this.monitor = monitor;
this.extensionFactory = modelFactories.getFactory(ExtensionFactory.class);
}
/**
* Report a warning.
*
* @param problems
* @param message
* @param model
*/
private void error(String message, Object model, Object... messageParameters) {
if (monitor != null) {
Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-namespace-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
monitor.problem(problem);
}
}
/**
* Report a exception.
*
* @param problems
* @param message
* @param model
*/
private void error(String message, Object model, Exception ex) {
if (monitor != null) {
Problem problem = new ProblemImpl(this.getClass().getName(), "contribution-namespace-validation-messages", Severity.ERROR, model, message, ex);
monitor.problem(problem);
}
}
public QName getArtifactType() {
return IMPORT;
}
public Class<ImportXYZ> getModelType() {
return ImportXYZ.class;
}
public ImportXYZ read(XMLStreamReader reader) throws ContributionReadException {
ImportXYZ importXYZ= this.factory.createImport();
QName element;
try {
while (reader.hasNext()) {
int event = reader.getEventType();
switch (event) {
case START_ELEMENT:
element = reader.getName();
// Read <import>
if (IMPORT.equals(element)) {
String ns = reader.getAttributeValue(null, URI);
if (ns == null) {
error("AttributeNameSpaceMissing", reader);
} else {
importXYZ.setURI(ns);
}
String anAttribute = reader.getAttributeValue(null, AN_ATTRIBUTE);
if (anAttribute != null) {
importXYZ.setAnAttribute(anAttribute);
}
}
break;
case XMLStreamConstants.END_ELEMENT:
if (IMPORT.equals(reader.getName())) {
return importXYZ;
}
break;
}
// Read the next element
if (reader.hasNext()) {
reader.next();
}
}
}
catch (XMLStreamException e) {
ContributionReadException ex = new ContributionReadException(e);
error("XMLStreamException", reader, ex);
}
return importXYZ;
}
public void write(ImportXYZ importXYZ, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
// Write <import>
writer.writeStartElement(IMPORT.getNamespaceURI(), IMPORT.getLocalPart());
if (importXYZ.getURI() != null) {
writer.writeAttribute(URI, importXYZ.getURI());
}
if (importXYZ.getAnAttribute() != null) {
writer.writeAttribute(AN_ATTRIBUTE, importXYZ.getAnAttribute());
}
writer.writeEndElement();
}
public void resolve(ImportXYZ model, ModelResolver resolver) throws ContributionResolveException {
}
}
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