de.visualdependencies.plugin.impl.PluginServiceImpl.java Source code

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Here is the source code for de.visualdependencies.plugin.impl.PluginServiceImpl.java

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/*
 * visualDependencies (visualize your database)
 * Copyright (C) 2009-2010 Andre Kasper, Jan Philipp <knallisworld@googlemail.com>
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package de.visualdependencies.plugin.impl;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;

import de.visualdependencies.plugin.Plugin;
import de.visualdependencies.plugin.PluginService;
import edu.umd.cs.findbugs.annotations.NonNull;

@Service
public class PluginServiceImpl implements PluginService {

    @Autowired
    private ApplicationContext applicationContext;

    @Override
    public <T extends Plugin> Collection<T> getPlugins(@NonNull final Class<T> pluginType) {

        Assert.notNull(pluginType, "The plugin type must not be null.");

        final Collection<T> plugins = new ArrayList<T>();
        plugins.addAll(getPluginsAsMap(pluginType).values());

        return plugins;
    }

    /**
     * @see ApplicationContext#getBeansOfType(Class)
     */
    @Override
    public <T extends Plugin> Map<String, T> getPluginsAsMap(@NonNull final Class<T> pluginType) {

        Assert.notNull(pluginType, "The plugin type must not be null.");

        return applicationContext.getBeansOfType(pluginType);
    }

    @Override
    public <T extends Plugin> T resolvePlugin(final String name, final Class<T> pluginType) {
        return applicationContext.getBean(name, pluginType);
    }

    @Override
    public String resolvePluginName(final Plugin plugin) {
        final Map<String, ? extends Plugin> plugins = getPluginsAsMap(plugin.getClass());
        for (final Map.Entry<String, ? extends Plugin> entry : plugins.entrySet()) {
            if (entry.getValue() == plugin) {
                return entry.getKey();
            }
        }
        return null;
    }

}