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1
27 package ch.ethz.prose.query;
28
29 import java.lang.reflect.Method  ;
31 import java.lang.NoSuchMethodException ;
32
33
39 public
40 class MethodSurrogate extends Surrogate implements java.io.Serializable {
41
42 private String declaringClassName;
43 private String methodName;
44 private String [] parameterTypes;
45 private int hashCode;
46
47
52 public MethodSurrogate(Method m)
53 {
54 if (m == null)
55 throw new IllegalArgumentException ("specified method must not be null");
56
57 hashCode = m.hashCode();
58 methodName = m.getName();
59 Class [] pt = m.getParameterTypes();
60 parameterTypes = new String [pt.length];
61 for (int i=0; i<pt.length; i++)
62 parameterTypes[i] = pt[i].getName();
63
64 declaringClassName = m.getDeclaringClass().getName();
65 }
66
67
68
73 public String getName()
74 {
75 return methodName;
76 }
77
78
79
84 public String [] getParameterTypes()
85 {
86 return parameterTypes;
87 }
88
89
90 public Object toRealInstance() throws ClassNotFoundException , NoSuchMethodException
91 {
92 return toRealInstance(declaringClassName);
93 }
94
95
102 public Method toRealInstance(String className) throws ClassNotFoundException , NoSuchMethodException
103 {
104 Class [] parameterClasses = new Class [parameterTypes.length];
105
106 Class declaringClass = Class.forName(className);
107 for (int i=0; i < parameterTypes.length; i++)
108 {
109 if (parameterTypes[i].equals("byte"))
110 parameterClasses[i] = byte.class;
111 else if (parameterTypes[i].equals("short"))
112 parameterClasses[i] = short.class;
113 else if (parameterTypes[i].equals("int"))
114 parameterClasses[i] = int.class;
115 else if (parameterTypes[i].equals("long"))
116 parameterClasses[i] = long.class;
117 else if (parameterTypes[i].equals("char"))
118 parameterClasses[i] = char.class;
119 else if (parameterTypes[i].equals("float"))
120 parameterClasses[i] = float.class;
121 else if (parameterTypes[i].equals("double"))
122 parameterClasses[i] = double.class;
123 else if (parameterTypes[i].equals("boolean"))
124 parameterClasses[i] = boolean.class;
125 else
126 parameterClasses[i] = Class.forName(parameterTypes[i]);
127 }
128 return (declaringClass.getDeclaredMethod(methodName, parameterClasses));
129 }
130
131
132
139 public boolean equals(Object o)
140 {
141 if (!(o instanceof MethodSurrogate))
142 return false;
143
144 MethodSurrogate other = (MethodSurrogate) o;
145
146 if (!this.getName().equals(other.getName()))
147 return false;
148
149 if (this.parameterTypes.length != other.parameterTypes.length)
150 return false;
151
152 for (int i=0; i<this.parameterTypes.length; i++)
153 if (!this.parameterTypes[i].equals(other.parameterTypes[i]))
154 return false;
155
156 return true;
157 }
158
159 public int hashCode()
160 {
161 return hashCode;
162 }
163
164
168 public String toString()
169 {
170 String s = methodName + "(";
171 for (int i=0; i < parameterTypes.length; i++)
172 {
173 if (i==0)
174 {
175 s += parameterTypes[i];
176 continue;
177 }
178 s += (", " + parameterTypes[i]);
179 }
180 s += ")";
181 return s;
182 }
183 }
184
185 |
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