1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 package org.openoffice.xmerge.merger; 25 26 /** 27 * This is the difference algorithm interface. It is an interface so 28 * that different algorithms may be plugged-in to actually compute 29 * the differences. 30 * 31 * NOTE: this code may not be thread safe. 32 */ 33 public interface DiffAlgorithm { 34 35 /** 36 * Returns a <code>Difference</code> array. This method finds out 37 * the difference between two sequences. 38 * 39 * @param orgSeq The original sequence of object. 40 * @param modSeq The modified (or changed) sequence to 41 * compare against with the origial. 42 * 43 * @return A <code>Difference</code> array. 44 */ computeDiffs(Iterator orgSeq, Iterator modSeq)45 public Difference[] computeDiffs(Iterator orgSeq, Iterator modSeq); 46 } 47 48