Package org.drools.core.rule.constraint

Class NegConstraint

java.lang.Object

org.drools.core.rule.constraint.NegConstraint

All Implemented Interfaces:

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

public class NegConstraint
extends java.lang.Object
implements AlphaNodeFieldConstraint

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.drools.core.rule.constraint.Constraint

Constraint.ConstraintType

Constructor Summary

Constructors

Constructor	Description
NegConstraint()
NegConstraint(boolean operator)

Method Summary

Modifier and Type	Method	Description
NegConstraint	clone()	Clones the constraint
AlphaNodeFieldConstraint	cloneIfInUse()	Clone this constraints only if it is already used by a different node, otherwise returns this
boolean	equals(java.lang.Object o)
Declaration[]	getRequiredDeclarations()	Returns all the declarations required by the given constraint implementation.
Constraint.ConstraintType	getType()	Returns the type of the constraint, either ALPHA, BETA or UNKNOWN
int	hashCode()
boolean	isAllowed(InternalFactHandle handle, ReteEvaluator reteEvaluator)
boolean	isTemporal()	Returns true in case this constraint is a temporal constraint
void	readExternal(java.io.ObjectInput in)
void	replaceDeclaration(Declaration oldDecl, Declaration newDecl)	When a rule contains multiple logical branches, i.e., makes use of 'OR' CE, it is required to clone patterns and declarations for each logical branch.
boolean	setInUse()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drools.core.rule.constraint.Constraint

addPackageNames, equals, getListenedPropertyMask, getPackageNames, mergeEvaluationContext, registerEvaluationContext

Constructor Detail

NegConstraint

public NegConstraint()

NegConstraint

public NegConstraint(boolean operator)

Method Detail

isAllowed

public boolean isAllowed(InternalFactHandle handle,
                         ReteEvaluator reteEvaluator)

Specified by:

isAllowed in interface AlphaNodeFieldConstraint

cloneIfInUse

public AlphaNodeFieldConstraint cloneIfInUse()

Description copied from interface: AlphaNodeFieldConstraint

Clone this constraints only if it is already used by a different node, otherwise returns this

Specified by:

cloneIfInUse in interface AlphaNodeFieldConstraint

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Description copied from interface: Constraint

Returns all the declarations required by the given constraint implementation.

Specified by:

getRequiredDeclarations in interface Constraint

Returns:

replaceDeclaration

public void replaceDeclaration(Declaration oldDecl,
                               Declaration newDecl)

Description copied from interface: Constraint

When a rule contains multiple logical branches, i.e., makes use of 'OR' CE, it is required to clone patterns and declarations for each logical branch. Since this is done at ReteOO build type, when constraints were already created, eventually some constraints need to update their references to the declarations.

Specified by:

replaceDeclaration in interface Constraint

clone

public NegConstraint clone()

Description copied from interface: Constraint

Clones the constraint

Specified by:

clone in interface Constraint

Overrides:

clone in class java.lang.Object

Returns:

getType

public Constraint.ConstraintType getType()

Description copied from interface: Constraint

Returns the type of the constraint, either ALPHA, BETA or UNKNOWN

Specified by:

getType in interface Constraint

Returns:

isTemporal

public boolean isTemporal()

Description copied from interface: Constraint

Returns true in case this constraint is a temporal constraint

Specified by:

isTemporal in interface Constraint

Returns:

setInUse

public boolean setInUse()

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Specified by:

writeExternal in interface java.io.Externalizable

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Throws:

java.io.IOException

java.lang.ClassNotFoundException

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object