org.jboss.aop.joinpoint
Class FieldInvocation

java.lang.Object
  org.jboss.aop.joinpoint.InvocationBase
      org.jboss.aop.joinpoint.FieldInvocation

All Implemented Interfaces:

Serializable, Invocation

Direct Known Subclasses:

FieldReadInvocation, FieldWriteInvocation

public abstract class FieldInvocation
extends InvocationBase

This is a helper wrapper class for an Invocation object. It is used to add or get values or metadata that pertains to an AOP field access or field update.

Version:

$Revision: 70849 $

Author:

Bill Burke

See Also:

Serialized Form

Field Summary

protected Field	field
protected int	index

Fields inherited from class org.jboss.aop.joinpoint.InvocationBase

advisor, currentInterceptor, instanceResolver, interceptors, metadata, responseContextInfo, targetObject

Constructor Summary

protected	FieldInvocation(FieldInfo info, Interceptor[] interceptors)
	FieldInvocation(Field field, int fieldIndex, Interceptor[] interceptors)
protected	FieldInvocation(Interceptor[] interceptors)

Method Summary

Field	getField() This is the field the invocation is accessing
int	getIndex() This is an index into the Field[] array accessed through the ClassAdvisor
Object	getMetaData(Object group, Object attr) This method resolves metadata based on the context of the invocation.
Object	resolveAnnotation(Class<? extends Annotation> annotation) This method resolves an annotation based on the context of the invocation.
<T extends Annotation> T	resolveTypedAnnotation(Class<T> annotation) Abstraction for resolving an annotation so that it can be overriden from the Method, Constructor, Field, etc.

Methods inherited from class org.jboss.aop.joinpoint.InvocationBase

addResponseAttachment, getAdvisor, getCurrentInterceptor, getInstanceResolver, getInterceptors, getMetaData, getResponseAttachment, getResponseContextInfo, getTargetObject, invokeNext, invokeNext, invokeTarget, resolveAnnotation, resolveClassAnnotation, resolveClassMetaData, resolveTypedAnnotation, resolveTypedClassAnnotation, setAdvisor, setInstanceResolver, setMetaData, setResponseContextInfo, setTargetObject

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jboss.aop.joinpoint.Invocation

copy, getWrapper

Field Detail

field

protected transient Field field

index

protected int index

Constructor Detail

FieldInvocation

public FieldInvocation(Field field,
                       int fieldIndex,
                       Interceptor[] interceptors)

FieldInvocation

protected FieldInvocation(Interceptor[] interceptors)

FieldInvocation

protected FieldInvocation(FieldInfo info,
                          Interceptor[] interceptors)

Method Detail

resolveAnnotation

public Object resolveAnnotation(Class<? extends Annotation> annotation)

This method resolves an annotation based on the context of the invocation.

Specified by:

resolveAnnotation in interface Invocation

Overrides:

resolveAnnotation in class InvocationBase

Returns:

resolveTypedAnnotation

public <T extends Annotation> T resolveTypedAnnotation(Class<T> annotation)

Description copied from interface: Invocation

Abstraction for resolving an annotation so that it can be overriden from the Method, Constructor, Field, etc.

Specified by:

resolveTypedAnnotation in interface Invocation

Overrides:

resolveTypedAnnotation in class InvocationBase

Returns:

getMetaData

public Object getMetaData(Object group,
                          Object attr)

This method resolves metadata based on the context of the invocation. It iterates through its list of MetaDataResolvers to find out the value of the metadata desired. This list usually is ThreadMetaData, InstanceAdvisor.getMetaData ClassAdvisor.getMethodMetaData (or field, or constructor) ClassAdvisor.getDefaultMetaData

Specified by:

getMetaData in interface Invocation

Overrides:

getMetaData in class InvocationBase

getField

public Field getField()

This is the field the invocation is accessing

Returns:

getIndex

public int getIndex()

This is an index into the Field[] array accessed through the ClassAdvisor

Returns: