/*
* 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;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* @author mycat
*/
public final class ObjectUtil {
public static Object copyObject(Object object) {
ByteArrayOutputStream b = new ByteArrayOutputStream();
ObjectOutputStream s = null;
try {
s = new ObjectOutputStream(b);
s.writeObject(object);
ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(b.toByteArray()));
return ois.readObject();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
return null;
}
/**
* 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;
}
}
}