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1 /* 2 * PROJECT : DAR Runtime and Tools 3 * COPYRIGHT : Copyright (C) 1999-2004 tim.stephenson@enableit.org 4 * LICENSE : GNU LESSER GENERAL PUBLIC LICENSE 5 * Version 2.1, February 1999 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 package org.enableit.db; 22 23 /*** 24 * Determines whether a given record is deemed to exist in a datastore 25 * already according to rules defined by the implementation. 26 * 27 * Potential implementations consider records duplicate if the key exists, 28 * if every field matches an existing record, or somewhere in between. 29 */ 30 interface DuplicateResolver { 31 /* 32 * Properties 33 */ 34 35 /*** 36 * CVS info about this class and its current version 37 */ 38 static final String about = "$Id: DuplicateResolver.java,v 1.4 2004/03/19 19:11:41 tim Exp $"; 39 40 /* 41 * Methods 42 */ 43 44 /*** 45 * Test whether the bean is already represented in the datastore 46 * according to the matching rules of the implementation. 47 */ 48 boolean exists(Object bean); 49 }

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