org.drools.rule
Class LiteralRestriction

java.lang.Object
  org.drools.rule.LiteralRestriction

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Restriction

public class LiteralRestriction
extends java.lang.Object
implements Restriction

See Also:

Serialized Form

Constructor Summary

LiteralRestriction(FieldValue field, Evaluator evaluator, FieldExtractor fieldExtractor)

Method Summary

java.lang.Object	clone()
ContextEntry	createContextEntry()
boolean	equals(java.lang.Object object)
Evaluator	getEvaluator()
FieldValue	getField()
Declaration[]	getRequiredDeclarations() Literal constraints cannot have required declarations, so always return an empty array.
int	hashCode()
boolean	isAllowed(Extractor extractor, java.lang.Object object, InternalWorkingMemory workingMemoiry, ContextEntry context)
boolean	isAllowedCachedLeft(ContextEntry context, java.lang.Object object)
boolean	isAllowedCachedRight(ReteTuple tuple, ContextEntry context)
void	replaceDeclaration(Declaration oldDecl, Declaration newDecl) A restriction may be required to replace an old declaration object by a new updated one
java.lang.String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

LiteralRestriction

public LiteralRestriction(FieldValue field,
                          Evaluator evaluator,
                          FieldExtractor fieldExtractor)

Method Detail

getEvaluator

public Evaluator getEvaluator()

getField

public FieldValue getField()

isAllowed

public boolean isAllowed(Extractor extractor,
                         java.lang.Object object,
                         InternalWorkingMemory workingMemoiry,
                         ContextEntry context)

Specified by:

isAllowed in interface Restriction

isAllowedCachedLeft

public boolean isAllowedCachedLeft(ContextEntry context,
                                   java.lang.Object object)

Specified by:

isAllowedCachedLeft in interface Restriction

isAllowedCachedRight

public boolean isAllowedCachedRight(ReteTuple tuple,
                                    ContextEntry context)

Specified by:

isAllowedCachedRight in interface Restriction

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Literal constraints cannot have required declarations, so always return an empty array.

Specified by:

getRequiredDeclarations in interface Restriction

Returns:

Return an empty Declaration[]

replaceDeclaration

public void replaceDeclaration(Declaration oldDecl,
                               Declaration newDecl)

Description copied from interface: Restriction

A restriction may be required to replace an old declaration object by a new updated one

Specified by:

replaceDeclaration in interface Restriction

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

createContextEntry

public ContextEntry createContextEntry()

Specified by:

createContextEntry in interface Restriction

clone

public java.lang.Object clone()

Specified by:

clone in interface Restriction

Overrides:

clone in class java.lang.Object