jeops
Class ObjectBase

java.lang.Object
  |
  +--jeops.ObjectBase

public class ObjectBase

extends java.lang.Object

This class models the facts over which the inference engine will act. By facts we mean any object that is stored in this base - there's no notion of truth or falseness. A fact simply exists or doesn't.

Version:

0.03 18 Sep 2000 Implementation of the methods transferred from class ObjectHashTable to this class.

Author:

Carlos Figueira Filho (csff@cin.ufpe.br)

Field Summary

private java.util.Map	objects The class/objects mapping.
private java.util.Map	subClasses The superclasses/subclasses mapping.

Constructor Summary

ObjectBase()
Class constructor.

Method Summary

boolean	assert(java.lang.Object obj) Inserts a new object into this object base.
void	flush() Removes all objects of this base.
private void	insertImplementedInterfaces(java.lang.Class interfaceClass, java.lang.String className) Inserts a pairs into the subClass map for the given class, as well as the corresponding pairs for the superinterfaces of the given one.
private void	insertInheritancePair(java.lang.String superclass, java.lang.String subclass) Inserts a new pair .
java.util.Vector	objects(java.lang.String className) Returns the objects of the given class.
boolean	remove(java.lang.Object obj) Removes an object from this object base.

Methods inherited from class java.lang.Object

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

Field Detail

subClasses

private java.util.Map subClasses

The superclasses/subclasses mapping. Its elements will be Vectors, as there can be more than one subclass per class. Actually, this word is a little misused, as we consider interfaces implemented by a class as its superclasses too.

objects

private java.util.Map objects

The class/objects mapping. Its elements will be Vectors, as there can be more than one element per class.

Constructor Detail

ObjectBase

public ObjectBase()

Class constructor. Creates a new object base, initially empty.

Method Detail

assert

public boolean assert(java.lang.Object obj)

Inserts a new object into this object base.

Parameters:

obj - the object to be inserted.

Returns:

true if the insertion was successful (i.e., the object wasn't in the base; false otherwise.

insertImplementedInterfaces

private void insertImplementedInterfaces(java.lang.Class interfaceClass,
                                         java.lang.String className)

Inserts a pairs into the subClass map for the given class, as well as the corresponding pairs for the superinterfaces of the given one.

Parameters:

interfaceClass - the class object representing the interface.

className - the name of the implementing class.

insertInheritancePair

private void insertInheritancePair(java.lang.String superclass,
                                   java.lang.String subclass)

Inserts a new pair .

Parameters:

superclass - the name of the superclass.

subclass - the name of the subclass.

flush

public void flush()

Removes all objects of this base.

objects

public java.util.Vector objects(java.lang.String className)

Returns the objects of the given class.

Parameters:

className - the name of the class whose objects are being removed from this base.

Returns:

all objects that are instances of the given class.

remove

public boolean remove(java.lang.Object obj)

Removes an object from this object base.

Parameters:

obj - the object to be removed from this base.

Returns:

true if the remotion was successful (i.e., the given object belonged to this base); false otherwise.