org.vosao.i18n.VosaoResourceBundle.java Source code

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Here is the source code for org.vosao.i18n.VosaoResourceBundle.java

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/**
 * Vosao CMS. Simple CMS for Google App Engine.
 * 
 * Copyright (C) 2009-2010 Vosao development team.
 *
 * 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.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * email: vosao.dev@gmail.com
 */

package org.vosao.i18n;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.vosao.business.Business;
import org.vosao.business.plugin.PluginEntryPoint;
import org.vosao.common.VosaoContext;
import org.vosao.entity.PluginEntity;

/**
 * 
 * @author Alexander Oleynik
 * 
 */
public class VosaoResourceBundle extends ResourceBundle {

    private static final String BUNDLE_NAME = "org.vosao.resources.messages";

    private static final Log logger = LogFactory.getLog(VosaoResourceBundle.class);

    private Locale locale;

    public VosaoResourceBundle(Locale aLocale) {
        locale = aLocale;
    }

    @Override
    public Enumeration<String> getKeys() {
        List<String> result = new ArrayList<String>();
        for (ResourceBundle bundle : getResourceBundles()) {
            result.addAll(Collections.list(bundle.getKeys()));
        }
        return Collections.enumeration(result);
    }

    private Business getBusiness() {
        return VosaoContext.getInstance().getBusiness();
    }

    @Override
    protected Object handleGetObject(String key) {
        Object result = null;
        for (ResourceBundle bundle : getResourceBundles()) {
            try {
                result = bundle.getObject(key);
            } catch (MissingResourceException e) {
            }
            if (result != null) {
                return result;
            }
        }
        return "_" + key + "_";
    }

    private List<ResourceBundle> getResourceBundles() {
        List<ResourceBundle> result = new ArrayList<ResourceBundle>();
        for (PluginEntity plugin : getBusiness().getDao().getPluginDao().selectEnabled()) {
            PluginEntryPoint entryPoint = getBusiness().getPluginBusiness().getEntryPoint(plugin);
            if (entryPoint != null && entryPoint.getBundleName() != null) {
                result.add(ResourceBundle.getBundle(entryPoint.getBundleName(), locale,
                        getBusiness().getPluginBusiness().getClassLoader(plugin)));
            }
        }
        result.add(ResourceBundle.getBundle(BUNDLE_NAME, locale));
        return result;
    }

}