org.aopalliance.intercept
Interface Joinpoint
- ConstructorInvocation, FieldAccess, Invocation, MethodInvocation
public interface Joinpoint
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.
AccessibleObject | getStaticPart() - Returns the static part of this joinpoint.
|
Object | getThis() - Returns the object that holds the current joinpoint's static
part.
|
Object | proceed() - Proceeds to the next interceptor in the chain.
|
getStaticPart
public AccessibleObject getStaticPart()
Returns the static part of this joinpoint.
The static part is an accessible object on which a chain of
interceptors are installed.
getThis
public Object getThis()
Returns the object that holds the current joinpoint's static
part.
For instance, the target object for an invocation.
- the object (can be null if the accessible object is
static).
proceed
public Object proceed()
throws Throwable
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).
- see the children interfaces' proceed definition.