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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.definitions.xml;
import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
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.contribution.processor.BaseStAXArtifactProcessor;
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.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.definitions.SCADefinitions;
import org.apache.tuscany.sca.definitions.impl.SCADefinitionsImpl;
import org.apache.tuscany.sca.policy.Intent;
import org.apache.tuscany.sca.policy.IntentAttachPointType;
import org.apache.tuscany.sca.policy.PolicySet;
import org.apache.tuscany.sca.policy.QualifiedIntent;
import org.apache.tuscany.sca.monitor.Monitor;
/**
* Processor for SCA Definitions
*
* @version $Rev$ $Date$
*/
public class SCADefinitionsProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<SCADefinitions> {
private StAXArtifactProcessor<Object> extensionProcessor;
private Monitor monitor;
public static final String BINDING = "binding";
public static final String IMPLEMENTATION = "implementation";
public static final String SCA10_NS = "http://www.osoa.org/xmlns/sca/1.0";
public static final String SCA_DEFINITIONS = "definitions";
public static final QName SCA_DEFINITIONS_QNAME = new QName(SCA10_NS, SCA_DEFINITIONS);
public static final String TARGET_NAMESPACE = "targetNamespace";
public static final String NAME = "name";
/**
* Construct a new definitions processor
* @param extensionProcessor
* @param modelResolver
*/
public SCADefinitionsProcessor(StAXArtifactProcessor<Object> extensionProcessor,
ModelResolver modelResolver, Monitor monitor) {
this.extensionProcessor = extensionProcessor;
this.monitor = monitor;
}
public SCADefinitionsProcessor(ExtensionPointRegistry extensionPoints,
StAXArtifactProcessor<Object> extensionProcessor,
Monitor monitor) {
this.extensionProcessor = extensionProcessor;
this.monitor = monitor;
}
public SCADefinitions read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
QName name = null;
SCADefinitions definitions = null;
String targetNamespace = null;
while (reader.hasNext()) {
int event = reader.getEventType();
switch (event) {
case START_ELEMENT: {
name = reader.getName();
if ( SCA_DEFINITIONS_QNAME.equals(name)) {
definitions = new SCADefinitionsImpl();
targetNamespace = reader.getAttributeValue(null, TARGET_NAMESPACE);
definitions.setTargetNamespace(targetNamespace);
} else {
Object extension = extensionProcessor.read(reader);
if (extension != null) {
if ( extension instanceof Intent ) {
Intent intent = (Intent)extension;
intent.setName(new QName(targetNamespace,
intent.getName().getLocalPart()));
if ( intent instanceof QualifiedIntent ) {
QualifiedIntent qualifiedIntent = (QualifiedIntent)intent;
qualifiedIntent.getQualifiableIntent().
setName(new QName(targetNamespace,
qualifiedIntent.getQualifiableIntent().getName().getLocalPart()));
}
definitions.getPolicyIntents().add(intent);
} else if ( extension instanceof PolicySet ) {
PolicySet policySet = (PolicySet)extension;
policySet.setName(new QName(targetNamespace,
policySet.getName().getLocalPart()));
definitions.getPolicySets().add(policySet);
} else if ( extension instanceof IntentAttachPointType ) {
IntentAttachPointType type = (IntentAttachPointType)extension;
if ( type.getName().getLocalPart().startsWith(BINDING)) {
definitions.getBindingTypes().add((IntentAttachPointType)extension);
} else if ( type.getName().getLocalPart().startsWith(IMPLEMENTATION)) {
definitions.getImplementationTypes().add((IntentAttachPointType)extension);
}
}
}
break;
}
}
case XMLStreamConstants.CHARACTERS:
break;
case END_ELEMENT:
name = reader.getName();
if ( SCA_DEFINITIONS_QNAME.equals(name)) {
return definitions;
}
break;
}
//Read the next element
if (reader.hasNext()) {
reader.next();
}
}
return definitions;
}
public void write(SCADefinitions definitions, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
writeStartDocument(writer, SCA10_NS, SCA_DEFINITIONS,
new XAttr(TARGET_NAMESPACE, definitions.getTargetNamespace()));
for (Intent policyIntent : definitions.getPolicyIntents()) {
extensionProcessor.write(policyIntent, writer);
}
for (PolicySet policySet : definitions.getPolicySets()) {
extensionProcessor.write(policySet, writer);
}
for (IntentAttachPointType bindingType : definitions.getBindingTypes()) {
extensionProcessor.write(bindingType, writer);
}
for (IntentAttachPointType implType : definitions.getImplementationTypes()) {
extensionProcessor.write(implType, writer);
}
writeEndDocument(writer);
}
public void resolve(SCADefinitions scaDefns, ModelResolver resolver) throws ContributionResolveException {
// start by adding all of the top level artifacts into the resolver as there
// are many cross artifact references in a definitions file and we don't want
// to be dependent on the order things appear
for (Intent policyIntent : scaDefns.getPolicyIntents()) {
resolver.addModel(policyIntent);
}
for (PolicySet policySet : scaDefns.getPolicySets()) {
resolver.addModel(policySet);
}
for (IntentAttachPointType bindingType : scaDefns.getBindingTypes()) {
resolver.addModel(bindingType);
}
for (IntentAttachPointType implType : scaDefns.getImplementationTypes()) {
resolver.addModel(implType);
}
// now resolve everything to ensure that any references between
// artifacts are satisfied
for (int count = 0, size = scaDefns.getPolicyIntents().size(); count < size; count++) {
Intent intent = scaDefns.getPolicyIntents().get(count);
extensionProcessor.resolve(intent, resolver);
}
for (int count = 0, size = scaDefns.getPolicySets().size(); count < size; count++) {
PolicySet policySet = scaDefns.getPolicySets().get(count);
extensionProcessor.resolve(policySet, resolver);
}
for (int count = 0, size = scaDefns.getBindingTypes().size(); count < size; count++) {
IntentAttachPointType bindingType = scaDefns.getBindingTypes().get(count);
extensionProcessor.resolve(bindingType, resolver);
}
for (int count = 0, size = scaDefns.getImplementationTypes().size(); count < size; count++) {
IntentAttachPointType implType = scaDefns.getImplementationTypes().get(count);
extensionProcessor.resolve(implType, resolver);
}
}
public QName getArtifactType() {
return SCA_DEFINITIONS_QNAME;
}
public Class<SCADefinitions> getModelType() {
return SCADefinitions.class;
}
}
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