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package org.apache.tapestry.enhance; |
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import java.lang.reflect.Modifier; |
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import javassist.CtClass; |
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import javassist.CtMethod; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.hivemind.service.MethodFab; |
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import org.apache.hivemind.service.MethodSignature; |
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public class MethodFabImpl implements MethodFab |
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{ |
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private CtClassSource _source; |
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|
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private MethodSignature _signature; |
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|
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private CtMethod _method; |
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|
36 | 0 | private StringBuffer _descriptionBody = new StringBuffer(); |
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|
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public MethodFabImpl(CtClassSource source, MethodSignature signature, CtMethod method, |
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String body) |
40 | 0 | { |
41 | 0 | _source = source; |
42 | 0 | _signature = signature; |
43 | 0 | _method = method; |
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|
45 | 0 | _descriptionBody.append(body); |
46 | 0 | } |
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public String toString() |
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{ |
53 | 0 | if (_method == null) |
54 | 0 | return ""; |
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|
56 | 0 | StringBuffer buffer = new StringBuffer(); |
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|
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try |
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{ |
60 | 0 | buffer.append(Modifier.toString(_method.getModifiers())); |
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|
62 | 0 | buffer.append(" "); |
63 | 0 | buffer.append(_method.getReturnType().getName()); |
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|
65 | 0 | buffer.append(" "); |
66 | 0 | buffer.append(_method.getName()); |
67 | 0 | buffer.append("("); |
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|
69 | 0 | CtClass[] params = _method.getParameterTypes(); |
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|
71 | 0 | for (int i = 0; i < params.length; i++) |
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{ |
73 | 0 | if (i > 0) |
74 | 0 | buffer.append(", "); |
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|
76 | 0 | buffer.append(params[i].getName()); |
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|
78 | 0 | buffer.append(" $"); |
79 | 0 | buffer.append(i + 1); |
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} |
81 | 0 | buffer.append(")"); |
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|
83 | 0 | CtClass[] exceptions = _method.getExceptionTypes(); |
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|
85 | 0 | for (int i = 0; i < exceptions.length; i++) |
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{ |
87 | 0 | if (i == 0) |
88 | 0 | buffer.append("\n throws "); |
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else |
90 | 0 | buffer.append(", "); |
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|
92 | 0 | buffer.append(exceptions[i].getName()); |
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} |
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|
95 | 0 | buffer.append("\n"); |
96 | 0 | buffer.append(_descriptionBody); |
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} |
98 | 0 | catch (Exception ex) |
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{ |
100 | 0 | buffer.append(" *** "); |
101 | 0 | buffer.append(ex); |
102 | 0 | } |
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|
104 | 0 | return buffer.toString(); |
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} |
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public void addCatch(Class exceptionClass, String catchBody) |
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{ |
109 | 0 | if (_method == null) |
110 | 0 | return; |
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|
112 | 0 | CtClass ctException = _source.getCtClass(exceptionClass); |
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try |
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{ |
116 | 0 | _method.addCatch(catchBody, ctException); |
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} |
118 | 0 | catch (Exception ex) |
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{ |
120 | 0 | throw new ApplicationRuntimeException(EnhanceMessages.unableToAddCatch( |
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exceptionClass, |
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_method, |
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ex), ex); |
124 | 0 | } |
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|
126 | 0 | _descriptionBody.append("\ncatch("); |
127 | 0 | _descriptionBody.append(exceptionClass.getName()); |
128 | 0 | _descriptionBody.append(" $e)\n"); |
129 | 0 | _descriptionBody.append(catchBody); |
130 | 0 | } |
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public void extend(String body, boolean asFinally) |
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{ |
134 | 0 | if (_method == null) |
135 | 0 | return; |
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|
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try |
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{ |
139 | 0 | _method.insertAfter(body, asFinally); |
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} |
141 | 0 | catch (Exception ex) |
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{ |
143 | 0 | throw new ApplicationRuntimeException(EnhanceMessages.unableToExtendMethod( |
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_signature, |
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_method.getDeclaringClass().getName(), |
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ex), ex); |
147 | 0 | } |
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|
149 | 0 | _descriptionBody.append("\n"); |
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|
151 | 0 | if (asFinally) |
152 | 0 | _descriptionBody.append("finally\n"); |
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|
154 | 0 | _descriptionBody.append(body); |
155 | 0 | } |
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} |