com.curl.orb.servlet.InvokeHttpSessionServlet.java Source code

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Here is the source code for com.curl.orb.servlet.InvokeHttpSessionServlet.java

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// Copyright (C) 1998-2009, Sumisho Computer Systems Corp. All Rights Reserved.

// 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.curl.orb.servlet;

import java.lang.reflect.Method;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.curl.orb.common.InstanceManagementException;
import com.curl.orb.common.InvokeHttpSessionRequest;
import com.curl.orb.security.RemoteServiceAnnotationChecker;

/**
 * Servlet to invoke the object in HttpSession
 * 
 * @author Hitoshi Okada
 * @since 0.6
 */
public class InvokeHttpSessionServlet extends InstanceManagementServlet {
    private static final long serialVersionUID = 1L;

    /* (non-Javadoc)
     * @see com.curl.orb.servlet.InstanceManagementServlet#init()
     */
    @Override
    public void init() {
        super.init();
    }

    /* (non-Javadoc)
     * @see com.curl.orb.servlet.InstanceManagementServlet#doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @Override
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException {
        super.doPost(request, response);
        Log log = LogFactory.getLog(getClass());
        InvokeHttpSessionRequest invokeRequest = (InvokeHttpSessionRequest) InstanceManagementUtil
                .getRequest(request);
        try {
            String methodName = invokeRequest.getMethodName();
            Object[] arguments = invokeRequest.getArguments();
            Object returnValue = null;
            Method method = null;
            HttpSession session = request.getSession(false);
            if (invokeRequest.getObjectId() == null) {
                // static method
                if (invokeRequest.getClass() == null)
                    throw new InstanceManagementException("Does not exist class name and object id.");
                String className = invokeRequest.getClassName();
                // security
                Class<?> cls = Class.forName(className);
                RemoteServiceAnnotationChecker.check(cls, environment);
                Object[] switchedArguments = switchRemoteObject(arguments, session);
                method = InstanceManagementUtil.getStaticMethod(cls, methodName, switchedArguments);
                returnValue = InstanceManagementUtil.invokeStaticMethod(method, cls, switchedArguments);
                // debug
                log.debug("Request invoke static method(HttpSession)");
            } else {
                // non static method
                if (session == null)
                    throw new InstanceManagementException("Does not exist HttpSession.");
                Object obj = session.getAttribute(invokeRequest.getObjectId());
                // security
                RemoteServiceAnnotationChecker.check(obj.getClass(), environment);
                Object[] switchedArguments = switchRemoteObject(arguments, session);
                method = InstanceManagementUtil.getMethod(obj, methodName, switchedArguments);
                returnValue = InstanceManagementUtil.invokeMethod(method, obj, switchedArguments);
                // debug
                log.debug("Request invoke method(HttpSession)");
            }
            InstanceManagementUtil.setResponse(request, returnValue,
                    InstanceManagementUtil.getSurborinateObject(method));
        }
        // IOException, SerializerException, InstanceManagementException ...etc
        catch (Exception e) {
            InstanceManagementUtil.setResponse(request, e, null);
        }
    }
}