org.drools.rule
Class VariableConstraint

java.lang.Object
  org.drools.rule.MutableTypeConstraint
      org.drools.rule.VariableConstraint

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, AlphaNodeFieldConstraint, BetaNodeFieldConstraint, Constraint, RuleComponent

public class VariableConstraint
extends MutableTypeConstraint

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.drools.spi.Constraint

Constraint.ConstraintType

Constructor Summary

VariableConstraint(FieldExtractor fieldExtractor, Declaration declaration, Evaluator evaluator)

VariableConstraint(FieldExtractor fieldExtractor, VariableRestriction restriction)

Method Summary

java.lang.Object	clone() Clones the constraint
ContextEntry	createContextEntry()
boolean	equals(java.lang.Object object)
Evaluator	getEvaluator()
FieldExtractor	getFieldExtractor()
Declaration[]	getRequiredDeclarations() Returns all the declarations required by the given constraint implementation.
int	hashCode()
boolean	isAllowed(java.lang.Object object, InternalWorkingMemory workingMemory, ContextEntry context)
boolean	isAllowedCachedLeft(ContextEntry context, java.lang.Object object)
boolean	isAllowedCachedRight(ReteTuple tuple, ContextEntry context)
void	replaceDeclaration(Declaration oldDecl, Declaration newDecl) A constraint may be required to replace an old declaration object by a new updated one
java.lang.String	toString()

Methods inherited from class org.drools.rule.MutableTypeConstraint

getType, setType

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableConstraint

public VariableConstraint(FieldExtractor fieldExtractor,
                          Declaration declaration,
                          Evaluator evaluator)

VariableConstraint

public VariableConstraint(FieldExtractor fieldExtractor,
                          VariableRestriction restriction)

Method Detail

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Description copied from interface: Constraint

Returns all the declarations required by the given constraint implementation.

Returns:

replaceDeclaration

public void replaceDeclaration(Declaration oldDecl,
                               Declaration newDecl)

Description copied from interface: Constraint

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

getFieldExtractor

public FieldExtractor getFieldExtractor()

getEvaluator

public Evaluator getEvaluator()

isAllowed

public boolean isAllowed(java.lang.Object object,
                         InternalWorkingMemory workingMemory,
                         ContextEntry context)

isAllowedCachedLeft

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

isAllowedCachedRight

public boolean isAllowedCachedRight(ReteTuple tuple,
                                    ContextEntry context)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

createContextEntry

public ContextEntry createContextEntry()

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

clone

public java.lang.Object clone()

Description copied from interface: Constraint

Clones the constraint

Specified by:

clone in interface Constraint

Specified by:

clone in class MutableTypeConstraint

Returns: