com.aurel.track.itemNavigator.viewPlugin.ViewPluginBL.java Source code

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Here is the source code for com.aurel.track.itemNavigator.viewPlugin.ViewPluginBL.java

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/**
 * Genji Scrum Tool and Issue Tracker
 * Copyright (C) 2015 Steinbeis GmbH & Co. KG Task Management Solutions
    
 * <a href="http://www.trackplus.com">Genji Scrum Tool</a>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/* $Id:$ */

package com.aurel.track.itemNavigator.viewPlugin;

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

import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;

import com.aurel.track.itemNavigator.IssueListViewPlugin;

/**
 * Logic for view plugins
 * @author Tamas
 *
 */
public class ViewPluginBL {

    private static final Logger LOGGER = LogManager.getLogger(ViewPluginBL.class);
    //cache the plugin classes
    public static Map<String, Class> cachePlugins;

    public synchronized static IssueListViewPlugin getPlugin(String className) {
        if (cachePlugins == null) {
            cachePlugins = new HashMap<String, Class>();
        }
        Class pluginClass = (Class) cachePlugins.get(className);
        if (pluginClass == null) {
            try {
                pluginClass = Class.forName(className);
            } catch (ClassNotFoundException e) {
                LOGGER.error(ExceptionUtils.getStackTrace(e));
                return null;
            }
            cachePlugins.put(className, pluginClass);
        }
        try {
            return (IssueListViewPlugin) pluginClass.newInstance();
        } catch (InstantiationException e) {
            LOGGER.error(ExceptionUtils.getStackTrace(e));
        } catch (IllegalAccessException e) {
            LOGGER.error(ExceptionUtils.getStackTrace(e));
        }
        return null;//plugin class problem
    }

}