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package org.aopalliance.intercept;

import java.lang.reflect.AccessibleObject;

/**
 * This interface represents a generic runtime joinpoint (in the AOP
 * terminology).
 *
 * 

A runtime joinpoint is an event that occurs on a static * joinpoint (i.e. a location in a the program). For instance, an * invocation is the runtime joinpoint on a method (static joinpoint). * The static part of a given joinpoint can be generically retrieved * using the {@link #getStaticPart()} method. * *

In the context of an interception framework, a runtime joinpoint * is then the reification of an access to an accessible object (a * method, a constructor, a field), i.e. the static part of the * joinpoint. It is passed to the interceptors that are installed on * the static joinpoint. * * @see Interceptor */ public interface Joinpoint { /** * Proceeds to the next interceptor in the chain. * *

The implementation and the semantics of this method depends * on the actual joinpoint type (see the children interfaces). * * @return see the children interfaces' proceed definition. * * @throws Throwable if the joinpoint throws an exception. */ Object proceed() throws Throwable; /** * Returns the object that holds the current joinpoint's static * part. * *

For instance, the target object for an invocation. * * @return the object (can be null if the accessible object is * static). */ Object getThis(); /** * Returns the static part of this joinpoint. * *

The static part is an accessible object on which a chain of * interceptors are installed. */ AccessibleObject getStaticPart(); }





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