/* * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software;Designed and Developed mainly by many Chinese * opensource volunteers. you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 only, as published by the * Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Any questions about this component can be directed to it's project Web address * https://code.google.com/p/opencloudb/. * */ package org.opencloudb.util; /** * @author mycat */ public final class ObjectUtil { /** * 递归地比较两个数组是否相同,支持多维数组。 * <p> * 如果比较的对象不是数组,则此方法的结果同<code>ObjectUtil.equals</code>。 * </p> * * @param array1 * 数组1 * @param array2 * 数组2 * @return 如果相等, 则返回<code>true</code> */ public static boolean equals(Object array1, Object array2) { if (array1 == array2) { return true; } if ((array1 == null) || (array2 == null)) { return false; } Class<? extends Object> clazz = array1.getClass(); if (!clazz.equals(array2.getClass())) { return false; } if (!clazz.isArray()) { return array1.equals(array2); } // array1和array2为同类型的数组 if (array1 instanceof long[]) { long[] longArray1 = (long[]) array1; long[] longArray2 = (long[]) array2; if (longArray1.length != longArray2.length) { return false; } for (int i = 0; i < longArray1.length; i++) { if (longArray1[i] != longArray2[i]) { return false; } } return true; } else if (array1 instanceof int[]) { int[] intArray1 = (int[]) array1; int[] intArray2 = (int[]) array2; if (intArray1.length != intArray2.length) { return false; } for (int i = 0; i < intArray1.length; i++) { if (intArray1[i] != intArray2[i]) { return false; } } return true; } else if (array1 instanceof short[]) { short[] shortArray1 = (short[]) array1; short[] shortArray2 = (short[]) array2; if (shortArray1.length != shortArray2.length) { return false; } for (int i = 0; i < shortArray1.length; i++) { if (shortArray1[i] != shortArray2[i]) { return false; } } return true; } else if (array1 instanceof byte[]) { byte[] byteArray1 = (byte[]) array1; byte[] byteArray2 = (byte[]) array2; if (byteArray1.length != byteArray2.length) { return false; } for (int i = 0; i < byteArray1.length; i++) { if (byteArray1[i] != byteArray2[i]) { return false; } } return true; } else if (array1 instanceof double[]) { double[] doubleArray1 = (double[]) array1; double[] doubleArray2 = (double[]) array2; if (doubleArray1.length != doubleArray2.length) { return false; } for (int i = 0; i < doubleArray1.length; i++) { if (Double.doubleToLongBits(doubleArray1[i]) != Double.doubleToLongBits(doubleArray2[i])) { return false; } } return true; } else if (array1 instanceof float[]) { float[] floatArray1 = (float[]) array1; float[] floatArray2 = (float[]) array2; if (floatArray1.length != floatArray2.length) { return false; } for (int i = 0; i < floatArray1.length; i++) { if (Float.floatToIntBits(floatArray1[i]) != Float.floatToIntBits(floatArray2[i])) { return false; } } return true; } else if (array1 instanceof boolean[]) { boolean[] booleanArray1 = (boolean[]) array1; boolean[] booleanArray2 = (boolean[]) array2; if (booleanArray1.length != booleanArray2.length) { return false; } for (int i = 0; i < booleanArray1.length; i++) { if (booleanArray1[i] != booleanArray2[i]) { return false; } } return true; } else if (array1 instanceof char[]) { char[] charArray1 = (char[]) array1; char[] charArray2 = (char[]) array2; if (charArray1.length != charArray2.length) { return false; } for (int i = 0; i < charArray1.length; i++) { if (charArray1[i] != charArray2[i]) { return false; } } return true; } else { Object[] objectArray1 = (Object[]) array1; Object[] objectArray2 = (Object[]) array2; if (objectArray1.length != objectArray2.length) { return false; } for (int i = 0; i < objectArray1.length; i++) { if (!equals(objectArray1[i], objectArray2[i])) { return false; } } return true; } } }