1 /*
2 * Copyright 2007-2008 Naoki NOSE.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package jp.liq.container.reflect;
17
18 import java.lang.annotation.Annotation;
19 import java.lang.reflect.Method;
20
21 /**
22 * リフレクション API の Method をラップします。
23 *
24 * @author nose
25 */
26 public class MethodWrapper extends ParameterizedMember {
27 private final Method method;
28
29 public MethodWrapper(Method method) {
30 this.method = method;
31 }
32
33 /**
34 * @see jp.liq.container.reflect.Member#name()
35 */
36 public String name() {
37 return method.getName();
38 }
39 /**
40 * ラップされた Method を返します。
41 */
42 public java.lang.reflect.Method getMethod() {
43 return method;
44 }
45
46 /**
47 * このメソッドを呼び出し、戻り値を返す ObjectFactory を生成します。
48 * @param target メソッド呼び出しの対象となるオブジェクト
49 * @param type 戻り値の型
50 * @return 生成された ObjectFactory
51 */
52 public <T> ObjectFactory<T> createObjectFactory(final Object target, final Class<T> type) {
53 final MethodWrapper m = this;
54
55 //TODO check type mismatch
56 return new ObjectFactory<T>() {
57
58 public T createObject(Object[] args) throws ReflectException {
59 return type.cast(m.invoke(target, args));
60 }
61 };
62 }
63
64 /**
65 * @see jp.liq.container.reflect.ObjectFactory#createObject(Object[])
66 */
67 public Object invoke(Object target, Object[] args) throws ReflectException {
68 try {
69 return method.invoke(target, args);
70 } catch (Exception e) {
71 throw new ReflectException(e, this,
72 ReflectException.Reason.FAILED_TO_INVOKE_METHOD);
73 }
74 }
75
76 /**
77 * @see jp.liq.container.reflect.Member#isAnnotationPresent(java.lang.Class)
78 */
79 public boolean isAnnotationPresent(Class<? extends Annotation> ann) {
80 return method.getAnnotation(ann) != null;
81 }
82 /**
83 * @see java.lang.Object#equals(java.lang.Object)
84 */
85 public boolean equals(Object o) {
86 return method.equals(o);
87 }
88 /**
89 * @see java.lang.Object#hashCode()
90 */
91 public int hashCode() {
92 return method.hashCode();
93 }
94 /**
95 * このメソッドの文字列表現を返します。
96 * ラップされている Method の toString を呼んでるだけですが。
97 */
98 public String toString() {
99 return method.toString();
100 }
101
102 /**
103 * @see jp.liq.container.reflect.ParameterizedMember#getParameterAnnotations()
104 */
105 public Annotation[][] getParameterAnnotations() {
106 return method.getParameterAnnotations();
107 }
108
109 /**
110 * @see jp.liq.container.reflect.ParameterizedMember#getParameterTypes()
111 */
112 public Class<?>[] getParameterTypes() {
113 return method.getParameterTypes();
114 }
115
116 /**
117 * @see jp.liq.container.reflect.Member#getModifiers()
118 */
119 @Override
120 public int getModifiers() {
121 return method.getModifiers();
122 }
123 }