1 /*
2 Copyright (C) 2000 - 2007 Grid Systems, S.A.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2, as
6 published by the Free Software Foundation.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17 package com.gridsystems.innergrid.api;
18
19 import java.lang.reflect.Array;
20 import java.lang.reflect.InvocationTargetException;
21 import java.lang.reflect.Method;
22
23 import org.apache.axis.InternalException;
24
25 /**
26 * Cloning utilities.
27 *
28 * @author dsanchez
29 * @author Xmas (Generics)
30 */
31 public final class CloneUtils {
32 /**
33 * Private constructor.
34 */
35 private CloneUtils() {
36 }
37
38 /**
39 * Clone array and its contents.
40 * @param source Original Array
41 * @param <T> Type of the Array to Clone.
42 * @return Clone of <code>source</code>.
43 * @throws CloneNotSupportedException if the array cannot be cloned
44 */
45 @SuppressWarnings("unchecked")
46 public static <T> T[] cloneArray(T[] source)
47 throws CloneNotSupportedException {
48 if (source == null) {
49 return null;
50 }
51 Class theClass = source.getClass().getComponentType();
52 if (!Cloneable.class.isAssignableFrom(theClass)) {
53 return source.clone();
54 }
55 int length = Array.getLength(source);
56
57 T[] newArray = (T[])Array.newInstance(theClass, length);
58
59 try {
60 Method mclone = theClass.getMethod("clone");
61 for (int i = 0; i < length; i++) {
62 if (source[i] == null) {
63 newArray[i] = null;
64 } else {
65 newArray[i] = (T)mclone.invoke(source[i]);
66 }
67 }
68 } catch (InvocationTargetException e) {
69 throw new InternalException(e);
70 } catch (Exception e) {
71 throw new CloneNotSupportedException(e.toString());
72 }
73 return newArray;
74 }
75
76
77 }