net.jcreate.e3.table.html.SessionStateManager.java Source code

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Here is the source code for net.jcreate.e3.table.html.SessionStateManager.java

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/*
 * Copyright 2002-2005 the original author or authors.
 *
 * 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.
 */

/**
 *  E3??QQ:21523645 
 */
package net.jcreate.e3.table.html;

import net.jcreate.e3.table.StateInfo;
import net.jcreate.e3.table.StateManager;
import net.jcreate.e3.table.WebContext;
import net.jcreate.e3.table.support.TableConstants;

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

public class SessionStateManager implements StateManager {

    private final Log logger = LogFactory.getLog(this.getClass());
    private final String id;
    private final WebContext webContext;

    public SessionStateManager(String pId, WebContext pWebContext) {
        if (pId == null) {
            throw new NullPointerException("id?null");
        }
        this.id = pId;
        this.webContext = pWebContext;
    }

    public StateInfo loadStateInfo() {
        String stateParam = (String) webContext.getSessionAttribute(TableConstants.STATE_PARAM_PREFIX + this.id);
        String stateParamValue = webContext.getParameter(stateParam);
        if ("true".equalsIgnoreCase(stateParamValue)) {
            return (StateInfo) webContext.getSessionAttribute(TableConstants.STATE_INFO_PREFIX + this.id);
        }
        stateParamValue = (String) webContext.getRequestAttribute(stateParam);
        if ("true".equalsIgnoreCase(stateParamValue)) {
            return (StateInfo) webContext.getSessionAttribute(TableConstants.STATE_INFO_PREFIX + this.id);
        }

        return null;
    }

    public void saveStateInfo(StateInfo pStateInfo) {
        webContext.setSessionAttribute(TableConstants.STATE_INFO_PREFIX + this.id, pStateInfo);

    }
}