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 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 Also:
/** * This interface represents a generic runtime joinpoint (in the AOP * terminology). * * <p>A runtime joinpoint is an <i>event</i> 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. * * <p>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).

Throws:
  • Throwable – if the joinpoint throws an exception.
Returns:see the children interfaces' proceed definition.
/** * Proceeds to the next interceptor in the chain. * * <p>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.

Returns:the object (can be null if the accessible object is static).
/** * Returns the object that holds the current joinpoint's static * part. * * <p>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.

/** * Returns the static part of this joinpoint. * * <p>The static part is an accessible object on which a chain of * interceptors are installed. */
AccessibleObject getStaticPart(); }