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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.policy.xml.ws;
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.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.neethi.PolicyEngine;
import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
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.monitor.Monitor;
import org.apache.tuscany.sca.policy.xml.PolicyConstants;
/**
* Processor for handling xml models of PolicySet definitions
*
* @version $Rev$ $Date$
*/
public class WSPolicyProcessor extends BaseStAXArtifactProcessor implements StAXArtifactProcessor<org.apache.neethi.Policy>, PolicyConstants {
public final static String WS_POLICY_NS = "http://schemas.xmlsoap.org/ws/2004/09/policy";
public final static String WS_POLICY = "Policy";
public final static QName WS_POLICY_QNAME =new QName(WS_POLICY_NS, WS_POLICY);
public WSPolicyProcessor() {
//System.out.println(">>>Initializing WSPolicyProcessor");
}
public WSPolicyProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
//System.out.println(">>>Initializing WSPolicyProcessor");
}
public QName getArtifactType() {
return WS_POLICY_QNAME;
}
public Class<org.apache.neethi.Policy> getModelType() {
return org.apache.neethi.Policy.class;
}
public org.apache.neethi.Policy read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
org.apache.neethi.Policy wsPolicy = null;
int event = reader.getEventType();
if (event == START_ELEMENT) {
QName name = reader.getName();
if (WS_POLICY_QNAME.equals(name)) {
OMElement policyElement = loadElement(reader);
wsPolicy = PolicyEngine.getPolicy(policyElement);
}
}
return wsPolicy;
}
public void write(org.apache.neethi.Policy wsPolicy, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
// Write an <sca:policySet>
writer.writeStartElement(WS_POLICY_NS, WS_POLICY);
//FIXME write proper ws-policy stuff here
writer.writeEndElement();
}
public void resolve(org.apache.neethi.Policy wsPolicy, ModelResolver resolver) throws ContributionResolveException {
}
private OMElement loadElement(XMLStreamReader reader) throws XMLStreamException {
OMFactory fac = OMAbstractFactory.getOMFactory();
OMElement head = fac.createOMElement(reader.getName());
OMElement current = head;
while (true) {
switch (reader.next()) {
case XMLStreamConstants.START_ELEMENT:
QName name = reader.getName();
OMElement child = fac.createOMElement(name, current);
int count = reader.getNamespaceCount();
for (int i = 0; i < count; i++) {
String prefix = reader.getNamespacePrefix(i);
String ns = reader.getNamespaceURI(i);
child.declareNamespace(ns, prefix);
}
if(!"".equals(name.getNamespaceURI())) {
child.declareNamespace(name.getNamespaceURI(), name.getPrefix());
}
// add the attributes for this element
count = reader.getAttributeCount();
for (int i = 0; i < count; i++) {
OMNamespace omNs = null;
String ns = reader.getAttributeNamespace(i);
String prefix = reader.getAttributePrefix(i);
String qname = reader.getAttributeLocalName(i);
String value = reader.getAttributeValue(i);
if ( ns != null ) {
omNs = fac.createOMNamespace(ns, prefix);
}
child.addAttribute(qname, value, omNs);
if (ns != null) {
child.declareNamespace(ns, prefix);
}
}
current = child;
break;
case XMLStreamConstants.CDATA:
fac.createOMText(current, reader.getText());
break;
case XMLStreamConstants.CHARACTERS:
fac.createOMText(current, reader.getText());
break;
case XMLStreamConstants.END_ELEMENT:
if ( current == head ) {
return head;
} else {
current = (OMElement)current.getParent();
}
}
}
}
}
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