org.dynalang.mop

Interface ClassBasedMetaobjectProtocol

All Superinterfaces:

BaseMetaobjectProtocol, CallProtocol, MetaobjectProtocol

All Known Implementing Classes:

CompositeClassBasedMetaobjectProtocol, ListMetaobjectProtocol, MapMetaobjectProtocol

public interface ClassBasedMetaobjectProtocol
extends MetaobjectProtocol

An interface that can be optionally implemented by any MOP if it is strictly class-based (that is, the class of an object used as either target or property identifier solely determines whether it has authority over it or not). The provision for property identifiers is put in place so that MOPs can implement special "metaproperties" (i.e. "prototype" in JavaScript) by using property IDs of classes private to their implementation.

Version:

$Id: $

Author:

Attila Szegedi

Nested Class Summary

Nested classes/interfaces inherited from interface org.dynalang.mop.BaseMetaobjectProtocol

BaseMetaobjectProtocol.Result

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isAuthoritativeForClass(java.lang.Class clazz) Returns whether this metaobject protocol has authority over objects of the specified class.

Methods inherited from interface org.dynalang.mop.MetaobjectProtocol

call, call, delete, get, has, propertyIds, put

Methods inherited from interface org.dynalang.mop.BaseMetaobjectProtocol

delete, has, properties, put

Methods inherited from interface org.dynalang.mop.CallProtocol

call, call, get, representAs

Method Detail

isAuthoritativeForClass

boolean isAuthoritativeForClass(java.lang.Class clazz)

Returns whether this metaobject protocol has authority over objects of the specified class. Note that if a MOP claims that it has authority over objects of a certain class, it can still return BaseMetaobjectProtocol.Result.noAuthority for certain objects. In that case - when used in CompositeClassBasedMetaobjectProtocol - the other participating MOPs will also be given the chance to handle the object after this MOP was given the chance first.

Parameters:

clazz - the class of the handled object

Returns:

true if this metaobject protocol has authority over objects of the specified class, false otherwise.