001/*
002 * jPOS Project [http://jpos.org]
003 * Copyright (C) 2000-2026 jPOS Software SRL
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Affero General Public License as
007 * published by the Free Software Foundation, either version 3 of the
008 * License, or (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Affero General Public License for more details.
014 *
015 * You should have received a copy of the GNU Affero General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018
019package org.jpos.transaction;
020
021import java.io.Serializable;
022
023/**
024 * GroupSelector can be implemented by a TransactionParticipant in
025 * order to switch the transaction to a new group of participants.
026 *
027 * @author apr
028 * @since 1.4.7
029 * @see TransactionParticipant
030 */
031public interface GroupSelector extends TransactionParticipant {
032    /**
033     * @param id transaction id
034     * @param context transaction context 
035     * @return group name or null for no-action
036     */
037    String select(long id, Serializable context);
038}
039