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JavaScript to Java AJAX communications library

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/*
 * JSON-RPC-Java - a JSON-RPC to Java Bridge with dynamic invocation
 *
 * $Id: HttpServletRequestArgResolver.java,v 1.2.2.1 2006/03/06 12:39:21 mclark Exp $
 *
 * Copyright Metaparadigm Pte. Ltd. 2004.
 * Michael Clark 
 *
 * 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.metaparadigm.jsonrpc;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

/**
 * An LocalArgResolver implementation that is registered by default
 * on the JSONRPCBridge and will replace an HttpServletRequest argument
 * on a called method with the current request object.
 */

public class HttpServletRequestArgResolver implements LocalArgResolver
{
    public Object resolveArg(Object context) throws LocalArgResolveException
    {
	if(!(context instanceof HttpServletRequest))
	    throw new LocalArgResolveException("invalid context");

	return context;
    }
}