/*
* Copyright 2007 Google Inc.
*
* 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 com.google.gwt.examples.rpc.server;
import com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException;
import com.google.gwt.user.client.rpc.SerializationException;
import com.google.gwt.user.server.rpc.RPC;
import com.google.gwt.user.server.rpc.RPCRequest;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
/**
* Canonical RPC integration example.
*/
public class CanonicalExample extends RemoteServiceServlet {
/**
* Process the RPC request encoded into the payload string and return a string
* that encodes either the method return or an exception thrown by it.
*/
@Override
public String processCall(String payload) throws SerializationException {
try {
RPCRequest rpcRequest = RPC.decodeRequest(payload, this.getClass());
return RPC.invokeAndEncodeResponse(this, rpcRequest.getMethod(),
rpcRequest.getParameters());
} catch (IncompatibleRemoteServiceException ex) {
return RPC.encodeResponseForFailure(null, ex);
}
}
}