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1
5 package com.tc.util;
6
7 import java.lang.reflect.Method  ;
8 import java.text.ParseException ;
9
10 public class ClassUtils {
11
12 private static final Class METHOD_CLASS = Method .class;
13
14 public static ClassSpec parseFullyQualifiedFieldName(String fieldName) throws ParseException {
15 ClassSpecImpl rv = new ClassSpecImpl();
16 rv.parseFullyQualifiedFieldName(fieldName);
17 return rv;
18 }
19
20 public static int arrayDimensions(Class arrayClass) {
21 if (arrayClass == null) { throw new NullPointerException (); }
22 if (!arrayClass.isArray()) { throw new IllegalArgumentException (arrayClass + " is not an array type"); }
23 return arrayClass.getName().lastIndexOf("[") + 1;
24 }
25
26 public static Class baseComponetType(Class c) {
27 if (c == null) { throw new NullPointerException (); }
28 if (!c.isArray()) { throw new IllegalArgumentException (c + " is not an array type"); }
29
30 while (c.isArray()) {
31 c = c.getComponentType();
32 }
33
34 return c;
35 }
36
37 public static boolean isPrimitiveArray(Object test) {
38 if (test == null) { return false; }
39 Class c = test.getClass();
40 if (!c.isArray()) { return false; }
41 return c.getComponentType().isPrimitive();
42 }
43
44 public static boolean isEnum(Class c) {
45 Class superClass = c.getSuperclass();
47 if (superClass == null) return false;
48 if (((c.getModifiers() & 0x00004000) != 0) && "java.lang.Enum".equals(superClass.getName())) { return true; }
49 return false;
50 }
51
52 public static boolean isPortableReflectionClass(Class c) {
53 return METHOD_CLASS == c;
54 }
55
56 public interface ClassSpec {
57 public String getFullyQualifiedClassName();
58
59 public String getShortFieldName();
60 }
61
62 private static class ClassSpecImpl implements ClassSpec {
63
64 private String fullyQualifiedClassName;
65 private String shortFieldName;
66
67 private void parseFullyQualifiedFieldName(String fieldName) throws ParseException {
68 if (fieldName == null) throwNotFullyQualifiedFieldName(fieldName, 0);
69 int lastDot = fieldName.lastIndexOf('.');
70 if (lastDot <= 0) throwNotFullyQualifiedFieldName(fieldName, 0);
71 if (lastDot + 1 == fieldName.length()) throwNotFullyQualifiedFieldName(fieldName, lastDot);
72 fullyQualifiedClassName = fieldName.substring(0, lastDot);
73 shortFieldName = fieldName.substring(lastDot + 1);
74 }
75
76 private void throwNotFullyQualifiedFieldName(String fieldName, int position) throws ParseException {
77 throw new ParseException ("Not a fully qualified fieldname: " + fieldName, position);
78 }
79
80 public String getFullyQualifiedClassName() {
81 return this.fullyQualifiedClassName;
82 }
83
84 public String getShortFieldName() {
85 return this.shortFieldName;
86 }
87
88 public String toString() {
89 return "ClassSpec[classname=" + fullyQualifiedClassName + ", shortFieldName=" + shortFieldName + "]";
90 }
91 }
92
93 }
94 |
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