1
2
3
4
5
6
7 package org.mule.util;
8
9 import java.lang.reflect.Array;
10 import java.util.Arrays;
11 import java.util.Collection;
12 import java.util.HashSet;
13
14
15 public class ArrayUtils extends org.apache.commons.lang.ArrayUtils
16 {
17
18
19
20
21
22 public static String toString(Object array, int maxElements)
23 {
24 String result;
25
26 Class componentType = array.getClass().getComponentType();
27 if (Object.class.isAssignableFrom(componentType))
28 {
29 result = ArrayUtils.toString((ArrayUtils.subarray((Object[]) array, 0, maxElements)));
30 }
31 else if (componentType.equals(Boolean.TYPE))
32 {
33 result = ArrayUtils.toString((ArrayUtils.subarray((boolean[]) array, 0, maxElements)));
34 }
35 else if (componentType.equals(Byte.TYPE))
36 {
37 result = ArrayUtils.toString((ArrayUtils.subarray((byte[]) array, 0, maxElements)));
38 }
39 else if (componentType.equals(Character.TYPE))
40 {
41 result = ArrayUtils.toString((ArrayUtils.subarray((char[]) array, 0, maxElements)));
42 }
43 else if (componentType.equals(Short.TYPE))
44 {
45 result = ArrayUtils.toString((ArrayUtils.subarray((short[]) array, 0, maxElements)));
46 }
47 else if (componentType.equals(Integer.TYPE))
48 {
49 result = ArrayUtils.toString((ArrayUtils.subarray((int[]) array, 0, maxElements)));
50 }
51 else if (componentType.equals(Long.TYPE))
52 {
53 result = ArrayUtils.toString((ArrayUtils.subarray((long[]) array, 0, maxElements)));
54 }
55 else if (componentType.equals(Float.TYPE))
56 {
57 result = ArrayUtils.toString((ArrayUtils.subarray((float[]) array, 0, maxElements)));
58 }
59 else if (componentType.equals(Double.TYPE))
60 {
61 result = ArrayUtils.toString((ArrayUtils.subarray((double[]) array, 0, maxElements)));
62 }
63 else
64 {
65 throw new IllegalArgumentException("Unknown array service type: " + componentType.getName());
66 }
67
68 if (Array.getLength(array) > maxElements)
69 {
70 StringBuffer buf = new StringBuffer(result);
71 buf.insert(buf.length() - 1, " [..]");
72 result = buf.toString();
73 }
74
75 return result;
76
77 }
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96 public static Object[] toArrayOfComponentType(Object[] objects, Class clazz)
97 {
98 if (objects == null || objects.getClass().getComponentType().equals(clazz))
99 {
100 return objects;
101 }
102
103 if (clazz == null)
104 {
105 throw new IllegalArgumentException("Array target class must not be null");
106 }
107
108 Object[] result = (Object[]) Array.newInstance(clazz, objects.length);
109 System.arraycopy(objects, 0, result, 0, objects.length);
110 return result;
111 }
112
113 public static Object[] setDifference(Object[] a, Object[] b)
114 {
115 Collection aCollecn = new HashSet(Arrays.asList(a));
116 Collection bCollecn = Arrays.asList(b);
117 aCollecn.removeAll(bCollecn);
118 return aCollecn.toArray();
119 }
120
121 public static String[] setDifference(String[] a, String[] b)
122 {
123 Object[] ugly = setDifference((Object[])a, b);
124 String[] copy = new String[ugly.length];
125 System.arraycopy(ugly, 0, copy, 0, ugly.length);
126 return copy;
127 }
128
129 }