/**
 * MailArchiver is an application that provides services for storing and managing e-mail messages through a Web Services SOAP interface.
 * Copyright (C) 2012  Marcio Andre Scholl Levien and Fernando Alberto Reuter Wendt and Jose Ronaldo Nogueira Fonseca Junior
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/******************************************************************************\
*
*  This product was developed by
*
*        SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO),
*
*  a government company established under Brazilian law (5.615/70),
*  at Department of Development of Porto Alegre.
*
\******************************************************************************/

package serpro.mailarchiver.service;

import javax.jdo.JDOObjectNotFoundException;
import javax.jdo.annotations.PersistenceAware;

import serpro.mailarchiver.domain.metaarchive.Setting;
import serpro.mailarchiver.util.Logger;
import serpro.mailarchiver.util.jdo.PersistenceManager;
import serpro.mailarchiver.util.transaction.WithReadOnlyTx;
import serpro.mailarchiver.util.transaction.WithReadWriteTx;

@PersistenceAware
public class Settings
    extends BaseService
{
    private static final Logger log = Logger.getLocalLogger();

    @WithReadOnlyTx
    public final String get(String attribute) {

        PersistenceManager pm = getPersistenceManager();

        Setting setting = null;
        try {
            setting = pm.getObjectById(Setting.class, attribute);
        }
        catch(JDOObjectNotFoundException e) {
            return null;
        }

        return setting.getValue();
    }

    @WithReadWriteTx
    public final void put(String attribute, String value) {

        PersistenceManager pm = getPersistenceManager();

        Setting setting = null;
        try {
            setting = pm.getObjectById(Setting.class, attribute);
        }
        catch(JDOObjectNotFoundException e) {
            setting = new Setting();
            setting.setName(attribute);
            setting.setValue(value);

            pm.makePersistent(setting);

            return;
        }

        setting.setValue(value);
    }

    @WithReadWriteTx
    public final void remove(String attribute) {

        PersistenceManager pm = getPersistenceManager();

        Setting setting = null;
        try {
            setting = pm.getObjectById(Setting.class, attribute);
        }
        catch(JDOObjectNotFoundException e) {
            return;
        }

        pm.deletePersistent(setting);
    }
}