1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 package ch.elca.el4j.util.codingsupport;
19
20 import java.lang.reflect.Method;
21
22 import org.springframework.util.StringUtils;
23
24
25
26
27
28
29
30
31
32 public final class ClassUtils {
33
34
35 private static final char BOOLEAN_ELEMENT = 'Z';
36
37
38 private static final char BYTE_ELEMENT = 'B';
39
40
41 private static final char CHAR_ELEMENT = 'C';
42
43
44 private static final char DOUBLE_ELEMENT = 'D';
45
46
47 private static final char FLOAT_ELEMENT = 'F';
48
49
50 private static final char INT_ELEMENT = 'I';
51
52
53 private static final char LONG_ELEMENT = 'J';
54
55
56 private static final char SHORT_ELEMENT = 'S';
57
58
59 private static final char CLASS_INTERFACE_ELEMENT = 'L';
60
61
62 private static final char ARRAY_DIM_SYMBOL = '[';
63
64
65
66
67 private ClassUtils() { }
68
69
70
71
72
73
74
75
76
77
78
79 public static String getCanonicalClassName(Class<?> clazz) {
80 String name = clazz.getName();
81
82 int arrayDimension = name.lastIndexOf(ARRAY_DIM_SYMBOL) + 1;
83 if (arrayDimension > 0) {
84 char element = name.charAt(arrayDimension);
85 switch (element) {
86 case BOOLEAN_ELEMENT:
87 name = boolean.class.getName(); break;
88 case BYTE_ELEMENT:
89 name = byte.class.getName(); break;
90 case CHAR_ELEMENT:
91 name = char.class.getName(); break;
92 case DOUBLE_ELEMENT:
93 name = double.class.getName(); break;
94 case FLOAT_ELEMENT:
95 name = float.class.getName(); break;
96 case INT_ELEMENT:
97 name = int.class.getName(); break;
98 case LONG_ELEMENT:
99 name = long.class.getName(); break;
100 case SHORT_ELEMENT:
101 name = short.class.getName(); break;
102 case CLASS_INTERFACE_ELEMENT:
103 name = name.substring(arrayDimension + 1,
104 name.length() - 1);
105 break;
106 default:
107 throw new IllegalArgumentException("Unknown type");
108 }
109
110 for (int i = 0; i < arrayDimension; i++) {
111 name += "[]";
112 }
113 }
114
115 return name;
116 }
117
118
119
120
121
122
123
124
125
126 public static String getPackageName(Class<?> clazz) {
127 String pkgName;
128 if (clazz.getPackage() != null
129 && StringUtils.hasText(clazz.getPackage().getName())) {
130 pkgName = clazz.getPackage().getName();
131 } else {
132 String className = clazz.getName();
133 pkgName = className.substring(0, className.lastIndexOf('.'));
134 }
135 return pkgName;
136 }
137
138
139
140
141
142
143
144
145
146 public static String getMethodSignature(Method method) {
147 Class<?>[] types = method.getParameterTypes();
148
149 StringBuffer buffer = new StringBuffer();
150 buffer.append(method.getName());
151 buffer.append("(");
152
153
154 for (int i = 0; i < types.length; i++) {
155 buffer.append(getCanonicalClassName(types[i]));
156
157 if (i < types.length - 1) {
158 buffer.append(", ");
159 }
160 }
161 buffer.append(")");
162
163 return buffer.toString();
164 }
165 }