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19 package org.apache.myfaces.view.facelets.el;
20
21 import java.io.Externalizable;
22 import java.io.IOException;
23 import java.io.ObjectInput;
24 import java.io.ObjectOutput;
25
26 import javax.el.ELContext;
27 import javax.el.ELException;
28 import javax.el.MethodExpression;
29 import javax.el.MethodInfo;
30 import javax.el.MethodNotFoundException;
31 import javax.el.PropertyNotFoundException;
32 import javax.faces.FacesWrapper;
33 import javax.faces.view.facelets.TagAttribute;
34
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39
40
41 public final class TagMethodExpression
42 extends MethodExpression
43 implements Externalizable, FacesWrapper<MethodExpression>
44 {
45
46 private static final long serialVersionUID = 1L;
47
48 private String attr;
49 private MethodExpression orig;
50
51 public TagMethodExpression()
52 {
53 super();
54 }
55
56 public TagMethodExpression(TagAttribute attr, MethodExpression orig)
57 {
58 this.attr = attr.toString();
59 this.orig = orig;
60 }
61
62 public MethodInfo getMethodInfo(ELContext context)
63 {
64 try
65 {
66 return this.orig.getMethodInfo(context);
67 }
68 catch (PropertyNotFoundException pnfe)
69 {
70 throw new PropertyNotFoundException(this.attr + ": " + pnfe.getMessage(), pnfe.getCause());
71 }
72 catch (MethodNotFoundException mnfe)
73 {
74 throw new MethodNotFoundException(this.attr + ": " + mnfe.getMessage(), mnfe.getCause());
75 }
76 catch (ELException e)
77 {
78 throw new ELException(this.attr + ": " + e.getMessage(), e.getCause());
79 }
80 }
81
82 public Object invoke(ELContext context, Object[] params)
83 {
84 try
85 {
86 return this.orig.invoke(context, params);
87 }
88 catch (PropertyNotFoundException pnfe)
89 {
90 throw new PropertyNotFoundException(this.attr + ": " + pnfe.getMessage(), pnfe.getCause());
91 }
92 catch (MethodNotFoundException mnfe)
93 {
94 throw new MethodNotFoundException(this.attr + ": " + mnfe.getMessage(), mnfe.getCause());
95 }
96 catch (ELException e)
97 {
98 throw new ELException(this.attr + ": " + e.getMessage(), e.getCause());
99 }
100 }
101
102 public String getExpressionString()
103 {
104 return this.orig.getExpressionString();
105 }
106
107 public boolean equals(Object obj)
108 {
109 return this.orig.equals(obj);
110 }
111
112 public int hashCode()
113 {
114 return this.orig.hashCode();
115 }
116
117 public boolean isLiteralText()
118 {
119 return this.orig.isLiteralText();
120 }
121
122 public void writeExternal(ObjectOutput out) throws IOException
123 {
124 out.writeObject(this.orig);
125 out.writeUTF(this.attr);
126 }
127
128 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
129 {
130 this.orig = (MethodExpression) in.readObject();
131 this.attr = in.readUTF();
132 }
133
134 public String toString()
135 {
136 return this.attr + ": " + this.orig;
137 }
138
139 public MethodExpression getWrapped()
140 {
141 return this.orig;
142 }
143 }