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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.recoveryrules;
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.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.guardian.Constants;
import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
import org.apache.tuscany.sca.monitor.Monitor;
public class RecoveryRulesPolicyProcessor implements StAXArtifactProcessor<RecoveryRulesPolicy>, Constants {
private static final QName RECOVERY_RULES_POLICY_QNAME = RecoveryRulesPolicy.RECOVERY_RULES_POLICY_QNAME;
public RecoveryRulesPolicyProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
}
public RecoveryRulesPolicy read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
RecoveryRulesPolicy policy = new RecoveryRulesPolicy();
QName name = null;
String ruleName = null;
OMElement ruleElement = null;
while (reader.hasNext()) {
if (reader.isStartElement()) {
name = reader.getName();
if (RULE.equals(name.getLocalPart())) {
ruleName = reader.getAttributeValue(null, Constants.NAME);
ruleElement = loadElement(reader);
policy.getRuleElements().put(ruleName, ruleElement);
}
} else if (reader.isEndElement()) {
if (RECOVERY_RULES_POLICY_QNAME.equals(reader.getName())) {
break;
}
}
reader.next();
}
return policy;
}
public void write(RecoveryRulesPolicy policy, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
throw new UnsupportedOperationException("Not supported yet.");
}
public QName getArtifactType() {
return RECOVERY_RULES_POLICY_QNAME;
}
public void resolve(RecoveryRulesPolicy arg0, ModelResolver arg1) throws ContributionResolveException {
throw new UnsupportedOperationException("Not supported yet.");
}
public Class<RecoveryRulesPolicy> getModelType() {
return RecoveryRulesPolicy.class;
}
private OMElement loadElement(XMLStreamReader reader) throws XMLStreamException {
OMFactory fac = OMAbstractFactory.getOMFactory();
OMElement head = fac.createOMElement(reader.getName());
//Load the attributes for the rule tag
loadAttributes(reader, head, fac);
OMElement current = head;
while (true) {
switch (reader.next()) {
case XMLStreamConstants.START_ELEMENT:
QName name = new QName(reader.getName().getLocalPart());
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
loadAttributes(reader, child, fac);
current = child;
break;
case XMLStreamConstants.CDATA:
fac.createOMText(current, reader.getText());
break;
case XMLStreamConstants.CHARACTERS:
String text = reader.getText().trim();
if (!text.isEmpty()) {
fac.createOMText(current, reader.getText());
}
break;
case XMLStreamConstants.END_ELEMENT:
if (current == head) {
return head;
} else {
current = (OMElement) current.getParent();
}
}
}
}
private void loadAttributes(XMLStreamReader reader, OMElement elem, OMFactory fac) {
int count = reader.getAttributeCount();
for (int i = 0; i < count; i++) {
String ns = reader.getAttributeNamespace(i);
String prefix = reader.getAttributePrefix(i);
String qname = reader.getAttributeLocalName(i);
String value = reader.getAttributeValue(i);
if (ns != null) {
elem.addAttribute(qname, value, fac.createOMNamespace(ns, prefix));
elem.declareNamespace(ns, prefix);
} else {
elem.addAttribute(qname, value, null);
}
}
}
}
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