/**
*
* Copyright 2005 Protique Ltd
*
* Licensed 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.servicemix.components.groovy;
import groovy.xml.DOMBuilder;
import org.servicemix.components.script.ScriptComponent;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.script.Namespace;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
/**
* A component which is capable of invoking a <a href="http://groovy.codehaus.org/">Groovy</a> script to process
* or transform a message.
*
* @version $Revision: 223 $
*/
public class GroovyComponent extends ScriptComponent {
private DocumentBuilderFactory documentBuilderFactory;
private DocumentBuilder documentBuilder;
public GroovyComponent() {
setScriptEngineName("groovy");
}
public GroovyComponent(QName service, String endpoint) {
super(service, endpoint);
setScriptEngineName("groovy");
}
public DocumentBuilder getDocumentBuilder() throws ParserConfigurationException {
if (documentBuilder == null) {
documentBuilder = getDocumentBuilderFactory().newDocumentBuilder();
}
return documentBuilder;
}
public void setDocumentBuilder(DocumentBuilder documentBuilder) {
this.documentBuilder = documentBuilder;
}
public DocumentBuilderFactory getDocumentBuilderFactory() {
if (documentBuilderFactory == null) {
documentBuilderFactory = DocumentBuilderFactory.newInstance();
}
return documentBuilderFactory;
}
public void setDocumentBuilderFactory(DocumentBuilderFactory documentBuilderFactory) {
this.documentBuilderFactory = documentBuilderFactory;
}
protected void populateNamespace(Namespace namespace, MessageExchange exchange, NormalizedMessage message) throws MessagingException {
try {
super.populateNamespace(namespace, exchange, message);
// lets output a builder
DocumentBuilder documentBuilder = getDocumentBuilder();
namespace.put("builder", new DOMBuilder(documentBuilder));
}
catch (ParserConfigurationException e) {
throw new MessagingException("Failed to create DOM DocumentBuilder: " + e, e);
}
}
}