edu.rice.cs.cunit.subAnnot
Class AnnotationDynamicProxyHandler

java.lang.Object
  edu.rice.cs.cunit.subAnnot.AnnotationDynamicProxyHandler

All Implemented Interfaces:

java.lang.reflect.InvocationHandler

public class AnnotationDynamicProxyHandler
extends java.lang.Object
implements java.lang.reflect.InvocationHandler

Proxy handler for annotations.

Author:

Mathias Ricken

Field Summary

protected java.lang.Class<? extends java.lang.annotation.Annotation>	_annotClass Annotation.
protected static java.util.ArrayList<java.lang.String>	_classPath List of class path entries.
protected java.util.Map<java.lang.String,java.lang.Object>	_values Map with key-value pairs.

Constructor Summary

AnnotationDynamicProxyHandler(java.lang.Class<? extends java.lang.annotation.Annotation> annotClass, AAnnotationsAttributeInfo.Annotation annot)
Constructor for the proxy handler.

Method Summary

protected void	getDefaultValues() Load default values for members not specified.
protected java.lang.Object	getMemberValue(AAnnotationsAttributeInfo.Annotation.NameValuePair nvp, java.lang.Class<? extends java.lang.annotation.Annotation> annotClass) Return the value specified in the
java.lang.Object	invoke(java.lang.Object proxy, java.lang.reflect.Method m, java.lang.Object[] args) Processes a method invocation on a proxy instance and returns the result.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

_annotClass

protected java.lang.Class<? extends java.lang.annotation.Annotation> _annotClass

Annotation.

_values

protected java.util.Map<java.lang.String,java.lang.Object> _values

Map with key-value pairs.

_classPath

protected static final java.util.ArrayList<java.lang.String> _classPath

List of class path entries.

Constructor Detail

AnnotationDynamicProxyHandler

public AnnotationDynamicProxyHandler(java.lang.Class<? extends java.lang.annotation.Annotation> annotClass,
                                     AAnnotationsAttributeInfo.Annotation annot)

Constructor for the proxy handler.

Parameters:

annotClass - annotation class

annot - annotation information from the class file

Method Detail

getDefaultValues

protected void getDefaultValues()

Load default values for members not specified.

getMemberValue

protected java.lang.Object getMemberValue(AAnnotationsAttributeInfo.Annotation.NameValuePair nvp,
                                          java.lang.Class<? extends java.lang.annotation.Annotation> annotClass)

Return the value specified in the

Parameters:

nvp - name-value pair

annotClass - the class of the annotation

Returns:

member value as an object

invoke

public java.lang.Object invoke(java.lang.Object proxy,
                               java.lang.reflect.Method m,
                               java.lang.Object[] args)
                        throws java.lang.Throwable

Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with.

Specified by:

invoke in interface java.lang.reflect.InvocationHandler

Parameters:

proxy - the proxy instance that the method was invoked on

m - the Method instance corresponding to the interface method invoked on the proxy instance.

args - an array of objects containing the values of the arguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean.

Returns:

the value to return from the method invocation on the proxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is null and the interface method's return type is primitive, then a NullPointerException will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a ClassCastException will be thrown by the method invocation on the proxy instance.

Throws:

java.lang.Throwable - the exception to throw from the method invocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the throws clause of the interface method or to the unchecked exception types java.lang.RuntimeException or java.lang.Error. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the throws clause of the interface method, then an UndeclaredThrowableException containing the exception that was thrown by this method will be thrown by the method invocation on the proxy instance.

See Also:

UndeclaredThrowableException