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1
3 package jodd.introspector;
4
5 import jodd.util.ReflectUtil;
6
7 import java.lang.reflect.Method  ;
8 import java.util.ArrayList ;
9 import java.util.HashMap ;
10 import java.util.List ;
11 import java.util.Iterator ;
12
13
16 class Methods {
17
18 HashMap mMap = new HashMap ();
19 Method [] allMethods;
20 boolean locked = false;
21
22 int count;
23 void addMethod(String name, Method method) {
24 if (locked == true) {
25 throw new IllegalStateException ("Methods introspection is already finished.");
26 }
27 count++;
28 List paramList = (List ) mMap.get(name);
29 if (paramList == null) {
30 paramList = new ArrayList ();
31 mMap.put(name, paramList);
32 }
33 paramList.add(new MethodDescriptor(method));
34 }
35
36 void lock() {
37 HashMap newMap = new HashMap (mMap.size());
38 locked = true;
39 allMethods = new Method [count];
40 Iterator it = mMap.keySet().iterator();
41 int k = 0;
42 while (it.hasNext()) {
43 String name = (String ) it.next();
44 List list = (List ) mMap.get(name);
45 MethodEntry entry = new MethodEntry();
46 entry.size = list.size();
47 entry.methodsList = new Method [entry.size];
48 entry.paramterTypes = new Class [entry.size][];
49 for (int i = 0; i < entry.size; i++) {
50 MethodDescriptor md = (MethodDescriptor) list.get(i);
51 allMethods[k] = md.method;
52 k++;
53 entry.methodsList[i] = md.method;
54 entry.paramterTypes[i] = md.parameterTypes;
55 }
56 newMap.put(name, entry);
57 }
58 mMap = newMap;
59 }
60
61
63 Method getMethod(String name, Class [] paramTypes) {
64 MethodEntry entry = (MethodEntry) mMap.get(name);
65 if (entry == null) {
66 return null;
67 }
68 for (int i = 0; i < entry.size; i++) {
69 if (ReflectUtil.compareParameteres(entry.paramterTypes[i], paramTypes) == true) {
70 return entry.methodsList[i];
71 }
72 }
73 return null;
74 }
75
76 Method getMethod(String name) {
77 MethodEntry entry = (MethodEntry) mMap.get(name);
78 if (entry == null) {
79 return null;
80 }
81 if (entry.size != 1) {
82 throw new IllegalArgumentException ("Method '" + name + "' is not unique!");
83 }
84 return entry.methodsList[0];
85 }
86
87 Method [] getAllMethods(String name) {
88 MethodEntry entry = (MethodEntry) mMap.get(name);
89 if (entry == null) {
90 return null;
91 }
92 return entry.methodsList;
93 }
94
95 Method [] getAllMethods() {
96 return allMethods;
97 }
98 }
99
100
101
102 class MethodDescriptor {
103 final Method method;
104 final Class [] parameterTypes;
105 static final Class [] NOPARAMS = new Class [0];
106 MethodDescriptor(Method method) {
107 Class [] params = method.getParameterTypes();
108 if (params == null) {
109 this.parameterTypes = NOPARAMS;
110 } else {
111 this.parameterTypes = params;
112 }
113 this.method = method;
114 }
115 }
116
117 class MethodEntry {
118 Method [] methodsList;
119 Class [][] paramterTypes;
120 int size;
121 } |
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