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/**
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* 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.apache.tuscany.binding.axis2.externalservice;
import javax.xml.namespace.QName;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.soap.SOAPEnvelope;
import org.apache.axiom.soap.SOAPFactory;
import org.apache.axis2.AxisFault;
import org.apache.axis2.client.OperationClient;
import org.apache.axis2.client.Options;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.wsdl.WSDLConstants;
import org.apache.tuscany.binding.axis2.util.SDODataBinding;
/**
* Axis2OperationInvoker uses an Axis2 OperationClient to invoke a remote web service
*/
public class Axis2OperationInvoker {
public QName wsdlOperationName;
public Options options;
public SDODataBinding dataBinding;
private SOAPFactory soapFactory;
public Axis2OperationInvoker(QName wsdlOperationName, Options options, SDODataBinding dataBinding, SOAPFactory soapFactory) {
this.wsdlOperationName = wsdlOperationName;
this.options = options;
this.dataBinding = dataBinding;
this.soapFactory = soapFactory;
}
/**
* Invoke a WS operation
*
* @param operationClient
* @param args
* @return
* @throws AxisFault
*/
protected Object invokeOperation(OperationClient operationClient, Object[] args) throws AxisFault {
operationClient.setOptions(options);
SOAPEnvelope env = soapFactory.getDefaultEnvelope();
if (args != null && args.length > 0) {
OMElement requestOM = dataBinding.toOMElement(args);
env.getBody().addChild(requestOM);
}
MessageContext requestMC = new MessageContext();
requestMC.setEnvelope(env);
operationClient.addMessageContext(requestMC);
ClassLoader tccl = Thread.currentThread().getContextClassLoader();
ClassLoader scl = this.getClass().getClassLoader();
try {
if (tccl != scl) {
Thread.currentThread().setContextClassLoader(scl);
}
operationClient.execute(true);
} finally {
if (tccl != scl) {
Thread.currentThread().setContextClassLoader(tccl);
}
}
MessageContext responseMC = operationClient.getMessageContext(WSDLConstants.MESSAGE_LABEL_IN_VALUE);
OMElement responseOM = responseMC.getEnvelope().getBody().getFirstElement();
Object[] os = null;
if (responseOM != null) {
os = dataBinding.fromOMElement(responseOM);
}
Object response;
if (os == null || os.length < 1) {
response = null;
} else {
response = os[0];
}
return response;
}
/**
* Get the WSDL operation name that this can invoke
*/
public QName getWSDLOperationName() {
return wsdlOperationName;
}
}
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