001/*
002 * HA-JDBC: High-Availability JDBC
003 * Copyright (c) 2004-2007 Paul Ferraro
004 * 
005 * This library is free software; you can redistribute it and/or modify it 
006 * under the terms of the GNU Lesser General Public License as published by the 
007 * Free Software Foundation; either version 2.1 of the License, or (at your 
008 * option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful, but WITHOUT
011 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
012 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
013 * for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public License
016 * along with this library; if not, write to the Free Software Foundation, 
017 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
018 * 
019 * Contact: ferraro@users.sourceforge.net
020 */
021package net.sf.hajdbc.distributable;
022
023import net.sf.hajdbc.DatabaseCluster;
024import net.sf.hajdbc.StateManager;
025
026
027/**
028 * Command pattern object indicating that a database is to be activated.
029 * @author  Paul Ferraro
030 * @since   1.0
031 */
032public class ActivateCommand extends AbstractCommand
033{
034        private static final long serialVersionUID = 3618141143175673655L;
035
036        /**
037         * Constructs a new DatabaseActivationCommand.
038         */
039        public ActivateCommand()
040        {
041                // Do nothing
042        }
043        
044        /**
045         * Constructs a new DatabaseActivationCommand.
046         * @param databaseId a database identifier
047         */
048        public ActivateCommand(String databaseId)
049        {
050                super(databaseId);
051        }
052
053        /**
054         * @see net.sf.hajdbc.distributable.Command#execute(net.sf.hajdbc.DatabaseCluster, net.sf.hajdbc.StateManager)
055         */
056        @Override
057        public <D> Boolean execute(DatabaseCluster<D> databaseCluster, StateManager stateManager)
058        {
059                return databaseCluster.activate(databaseCluster.getDatabase(this.databaseId), stateManager);
060        }
061}