/* | |
* 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.commons.proxy.invoker; | |
import org.apache.commons.proxy.Invoker; | |
import org.apache.commons.proxy.exception.InvokerException; | |
import org.apache.xmlrpc.XmlRpcException; | |
import org.apache.xmlrpc.XmlRpcHandler; | |
import java.lang.reflect.Method; | |
import java.util.Vector; | |
/** | |
* Uses <a href="http://ws.apache.org/xmlrpc/">Apache XML-RPC</a> to invoke methods on an XML-RPC service. | |
* <p/> | |
* <p> | |
* <b>Dependencies</b>: | |
* <ul> | |
* <li>Apache XML-RPC version 2.0 or greater</li> | |
* </ul> | |
* </p> | |
* | |
* @author James Carman | |
* @since 1.0 | |
*/ | |
public class XmlRpcInvoker implements Invoker | |
{ | |
//********************************************************************************************************************** | |
// Fields | |
//********************************************************************************************************************** | |
private final XmlRpcHandler handler; | |
private final String handlerName; | |
//********************************************************************************************************************** | |
// Constructors | |
//********************************************************************************************************************** | |
public XmlRpcInvoker( XmlRpcHandler handler, String handlerName ) | |
{ | |
this.handler = handler; | |
this.handlerName = handlerName; | |
} | |
//********************************************************************************************************************** | |
// Invoker Implementation | |
//********************************************************************************************************************** | |
public Object invoke( Object proxy, Method method, Object[] args ) throws Throwable | |
{ | |
final Object returnValue = handler.execute(handlerName + "." + method.getName(), toArgumentVector(args)); | |
if( returnValue instanceof XmlRpcException ) | |
{ | |
throw new InvokerException("Unable to execute XML-RPC call.", ( XmlRpcException ) returnValue); | |
} | |
return returnValue; | |
} | |
//********************************************************************************************************************** | |
// Other Methods | |
//********************************************************************************************************************** | |
private Vector toArgumentVector( Object[] args ) | |
{ | |
final Vector v = new Vector(); | |
for( int i = 0; i < args.length; i++ ) | |
{ | |
Object arg = args[i]; | |
v.addElement(arg); | |
} | |
return v; | |
} | |
} |