/*
* 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 ${packageName};
import java.util.Map;
import javax.jbi.messaging.MessageExchange;
import javax.jbi.messaging.MessagingException;
import javax.jbi.messaging.NormalizedMessage;
import javax.xml.transform.dom.DOMSource;
import org.apache.servicemix.jbi.jaxp.SourceTransformer;
import org.apache.servicemix.osworkflow.OSWorkflow;
import org.apache.servicemix.osworkflow.OSWorkflowEndpoint;
import org.apache.xpath.CachedXPathAPI;
import org.w3c.dom.Node;
import com.opensymphony.module.propertyset.PropertySet;
import com.opensymphony.workflow.FunctionProvider;
import com.opensymphony.workflow.WorkflowException;
public class ExampleFunction implements FunctionProvider {
/*
* (non-Javadoc)
*
* @see com.opensymphony.workflow.FunctionProvider#execute(java.util.Map,
* java.util.Map, com.opensymphony.module.propertyset.PropertySet)
*/
public void execute(Map transientVars, Map args, PropertySet propertySet) throws WorkflowException
{
NormalizedMessage msg = null;
OSWorkflowEndpoint ep = null;
boolean isAsynchron = false;
MessageExchange exchange = null;
if (transientVars.containsKey(OSWorkflow.KEY_ASYNC_PROCESSING))
{
isAsynchron = (Boolean)transientVars.get(OSWorkflow.KEY_ASYNC_PROCESSING);
}
else
{
throw new WorkflowException("ExampleFunction: Missing transient variable for async object. (" + OSWorkflow.KEY_ASYNC_PROCESSING + ")");
}
if (transientVars.containsKey(OSWorkflow.KEY_EXCHANGE))
{
exchange = (MessageExchange)transientVars.get(OSWorkflow.KEY_EXCHANGE);
}
else
{
throw new WorkflowException("ExampleFunction: Missing transient variable for exchange object. (" + OSWorkflow.KEY_EXCHANGE + ")");
}
if (transientVars.containsKey(OSWorkflow.KEY_IN_MESSAGE))
{
msg = (NormalizedMessage)transientVars.get(OSWorkflow.KEY_IN_MESSAGE);
}
else
{
throw new WorkflowException("ExampleFunction: Missing transient variable for message object. (" + OSWorkflow.KEY_IN_MESSAGE + ")");
}
if (transientVars.containsKey(OSWorkflow.KEY_ENDPOINT))
{
ep = (OSWorkflowEndpoint)transientVars.get(OSWorkflow.KEY_ENDPOINT);
}
else
{
throw new WorkflowException("ExampleFunction: Missing transient variable for endpoint object. (" + OSWorkflow.KEY_ENDPOINT + ")");
}
SourceTransformer sourceTransformer = new SourceTransformer();
try
{
DOMSource inMessageXml = (DOMSource)sourceTransformer.toDOMSource(msg.getContent());
// Parse out the actual message content
CachedXPathAPI xpath = new CachedXPathAPI();
Node exampleNode = xpath.selectSingleNode(inMessageXml.getNode(), "/example");
if (exampleNode != null)
{
String value = exampleNode.getTextContent();
propertySet.setString("ExampleKey", value);
}
else
{
throw new WorkflowException("ExampleFunction: Missing tag: example");
}
}
catch (Exception ex)
{
throw new WorkflowException(ex);
}
finally
{
// if the exchange came as asynchronous inOnly or RobustInOnly
// we will now send a receipt to the sender
try
{
if (isAsynchron)
{
ep.done(exchange);
}
}
catch (MessagingException mex)
{
throw new WorkflowException(mex);
}
}
}
}