com.liferay.util.servlet.SessionParameters.java Source code

Introduction

Here is the source code for com.liferay.util.servlet.SessionParameters.java

Source

/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.util.servlet;

import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.SystemProperties;
import com.liferay.util.PwdGenerator;

import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;

import javax.portlet.PortletRequest;
import javax.portlet.PortletSession;

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

/**
 * @author Brian Wing Shun Chan
 */
public class SessionParameters {

    public static final boolean USE_SESSION_PARAMETERS = GetterUtil
            .getBoolean(SystemProperties.get(SessionParameters.class.getName()), true);

    public static final String KEY = SessionParameters.class.getName();

    // Servlet Request

    public static String get(HttpServletRequest request, String parameter) {
        return get(request.getSession(), parameter);
    }

    public static String get(HttpSession session, String parameter) {
        if (!USE_SESSION_PARAMETERS) {
            return parameter;
        }

        Map<String, String> parameters = _getParameters(session);

        String newParameter = parameters.get(parameter);

        if (newParameter == null) {
            newParameter = PwdGenerator.getPassword() + StringPool.UNDERLINE + parameter;

            parameters.put(parameter, newParameter);
        }

        return newParameter;
    }

    private static Map<String, String> _getParameters(HttpSession session) {
        Map<String, String> parameters = null;

        try {
            parameters = (Map<String, String>) session.getAttribute(KEY);

            if (parameters == null) {
                parameters = new HashMap<String, String>();

                session.setAttribute(KEY, parameters);
            }
        } catch (IllegalStateException ise) {
            parameters = new HashMap<String, String>();
        }

        return parameters;
    }

    // Portlet Request

    public static String get(PortletRequest portletRequest, String parameter) {
        return get(portletRequest.getPortletSession(), parameter);
    }

    public static String get(PortletSession portletSession, String parameter) {
        if (!USE_SESSION_PARAMETERS) {
            return parameter;
        }

        Map<String, String> parameters = _getParameters(portletSession);

        String newParameter = parameters.get(parameter);

        if (newParameter == null) {
            newParameter = PwdGenerator.getPassword() + StringPool.UNDERLINE + parameter;

            parameters.put(parameter, newParameter);
        }

        return newParameter;
    }

    private static Map<String, String> _getParameters(PortletSession portletSession) {

        Map<String, String> parameters = null;

        try {
            parameters = (Map<String, String>) portletSession.getAttribute(KEY);

            if (parameters == null) {
                parameters = new LinkedHashMap<String, String>();

                portletSession.setAttribute(KEY, parameters);
            }
        } catch (IllegalStateException ise) {
            parameters = new LinkedHashMap<String, String>();
        }

        return parameters;
    }

}