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}