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package org.webmacro.engine; |
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import org.webmacro.PropertyException; |
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import java.lang.reflect.Method; |
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public class MethodWrapper |
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{ |
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private Object _instance; |
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private Class _class; |
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private Method[] _methods; |
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public MethodWrapper (Object o, String methodName) |
| 26 | 1365 | { |
| 27 | 1365 | if (o instanceof Class) |
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{ |
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|
| 30 | 1335 | _instance = null; |
| 31 | 1335 | _class = (Class) o; |
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} |
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else |
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{ |
| 35 | 30 | _instance = o; |
| 36 | 30 | _class = _instance.getClass(); |
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} |
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|
| 39 | 1365 | Method[] mArr = _class.getMethods(); |
| 40 | 1365 | java.util.ArrayList mList = new java.util.ArrayList(mArr.length); |
| 41 | 1365 | int methCnt = 0; |
| 42 | 39054 | for (int i = 0; i < mArr.length; i++) |
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{ |
| 44 | 37689 | if (mArr[i].getName().equals(methodName)) |
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{ |
| 46 | 2001 | methCnt++; |
| 47 | 2001 | if (_instance == null) |
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{ |
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| 50 | 1965 | int mod = mArr[i].getModifiers(); |
| 51 | 1965 | if (java.lang.reflect.Modifier.isStatic(mod)) mList.add(mArr[i]); |
| 52 | 1965 | } |
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else |
| 54 | 36 | mList.add(mArr[i]); |
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} |
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} |
| 57 | 1365 | if (mList.size() == 0) |
| 58 | 0 | if (methCnt == 0) |
| 59 | 0 | throw new IllegalArgumentException("No such method as " + methodName |
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+ " in class " + _class.getName() + "!"); |
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else |
| 62 | 0 | throw new IllegalStateException("Cannot invoke non-static method " |
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+ methodName + " without an instance of the class " + _class.getName() + "!"); |
| 64 | 1365 | _methods = new Method[mList.size()]; |
| 65 | 1365 | mList.toArray(_methods); |
| 66 | 1365 | } |
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public Object invoke (Object[] args) |
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throws PropertyException |
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{ |
| 71 | 53 | Class[] types = IntrospectionUtils.createTypesFromArgs(args); |
| 72 | 55 | for (int i = 0; i < _methods.length; i++) |
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{ |
| 74 | 55 | Method m = _methods[i]; |
| 75 | 55 | Class[] sig = m.getParameterTypes(); |
| 76 | 55 | if (IntrospectionUtils.matches(sig, types)) |
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{ |
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try |
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{ |
| 80 | 53 | Object obj = m.invoke(_instance, args); |
| 81 | 53 | if (obj == null |
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&& m.getReturnType() == java.lang.Void.TYPE) |
| 83 | 2 | return org.webmacro.engine.VoidMacro.instance; |
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else |
| 85 | 51 | return obj; |
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} |
| 87 | 0 | catch (Exception e) |
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{ |
| 89 | 0 | String argList = java.util.Arrays.asList(args).toString(); |
| 90 | 0 | String errMsg = "Unable to execute " + getDescription() |
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+ " on supplied args: " + argList; |
| 92 | 0 | throw new PropertyException(errMsg, e); |
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} |
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} |
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} |
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| 98 | 0 | String argList = java.util.Arrays.asList(args).toString(); |
| 99 | 0 | String errMsg = "Unable to execute " + getDescription() |
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+ " on supplied args: " + argList; |
| 101 | 0 | throw new PropertyException(errMsg); |
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} |
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public String getDescription () |
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{ |
| 106 | 0 | String methName = _methods[0].getName(); |
| 107 | 0 | String className = _methods[0].getDeclaringClass().getName(); |
| 108 | 0 | return className + "." + methName + "()]"; |
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} |
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} |