Package org.drools.core.common

Class TupleStartEqualsConstraint

java.lang.Object

org.drools.core.common.TupleStartEqualsConstraint

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, org.drools.base.rule.constraint.BetaNodeFieldConstraint, org.drools.base.rule.constraint.Constraint, org.drools.base.rule.RuleComponent

public class TupleStartEqualsConstraint
extends java.lang.Object
implements org.drools.base.rule.constraint.BetaNodeFieldConstraint

Checks if one tuple is the start subtuple of other tuple. For instance, if we have two tuples: T1 = [ a, b, c ] T2 = [ a, b, c, d, e] This constraint will evaluate to true as T1 is the starting subtuple of T2. On the other hand, if we have: T1 = [ a, c, b ] T2 = [ a, b, c, d, e ] This constraint will evaluate to false, as T1 is not the starting subtuple of T2. Besides having the same elements, the order is different. This constraint is used when joining subnetworks back into the main network.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TupleStartEqualsConstraint.TupleStartEqualsConstraintContextEntry

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

org.drools.base.rule.constraint.Constraint.ConstraintType

Constructor Summary

Constructors

Constructor	Description
TupleStartEqualsConstraint()

Method Summary

Modifier and Type	Method	Description
TupleStartEqualsConstraint	clone()
org.drools.base.rule.constraint.BetaNodeFieldConstraint	cloneIfInUse()
org.drools.base.rule.ContextEntry	createContextEntry()
boolean	equals(java.lang.Object object)
static TupleStartEqualsConstraint	getInstance()
org.drools.base.rule.Declaration[]	getRequiredDeclarations()
org.drools.base.rule.constraint.Constraint.ConstraintType	getType()
int	hashCode()
boolean	isAllowedCachedLeft(org.drools.base.rule.ContextEntry context, org.kie.api.runtime.rule.FactHandle handle)
boolean	isAllowedCachedRight(org.drools.base.reteoo.BaseTuple tuple, org.drools.base.rule.ContextEntry context)
boolean	isTemporal()
void	readExternal(java.io.ObjectInput in)
void	replaceDeclaration(org.drools.base.rule.Declaration oldDecl, org.drools.base.rule.Declaration newDecl)
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

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

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

addPackageNames, equals, getListenedPropertyMask, getListenedPropertyMask, getPackageNames, mergeEvaluationContext, registerEvaluationContext

Constructor Detail

TupleStartEqualsConstraint

public TupleStartEqualsConstraint()

Method Detail

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

writeExternal

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

Specified by:

writeExternal in interface java.io.Externalizable

Throws:

java.io.IOException

getInstance

public static TupleStartEqualsConstraint getInstance()

getRequiredDeclarations

public org.drools.base.rule.Declaration[] getRequiredDeclarations()

Specified by:

getRequiredDeclarations in interface org.drools.base.rule.constraint.Constraint

replaceDeclaration

public void replaceDeclaration(org.drools.base.rule.Declaration oldDecl,
                               org.drools.base.rule.Declaration newDecl)

Specified by:

replaceDeclaration in interface org.drools.base.rule.constraint.Constraint

isTemporal

public boolean isTemporal()

Specified by:

isTemporal in interface org.drools.base.rule.constraint.Constraint

createContextEntry

public org.drools.base.rule.ContextEntry createContextEntry()

Specified by:

createContextEntry in interface org.drools.base.rule.constraint.BetaNodeFieldConstraint

isAllowedCachedLeft

public boolean isAllowedCachedLeft(org.drools.base.rule.ContextEntry context,
                                   org.kie.api.runtime.rule.FactHandle handle)

Specified by:

isAllowedCachedLeft in interface org.drools.base.rule.constraint.BetaNodeFieldConstraint

isAllowedCachedRight

public boolean isAllowedCachedRight(org.drools.base.reteoo.BaseTuple tuple,
                                    org.drools.base.rule.ContextEntry context)

Specified by:

isAllowedCachedRight in interface org.drools.base.rule.constraint.BetaNodeFieldConstraint

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

clone

public TupleStartEqualsConstraint clone()

Specified by:

clone in interface org.drools.base.rule.constraint.Constraint

Overrides:

clone in class java.lang.Object

getType

public org.drools.base.rule.constraint.Constraint.ConstraintType getType()

Specified by:

getType in interface org.drools.base.rule.constraint.Constraint

cloneIfInUse

public org.drools.base.rule.constraint.BetaNodeFieldConstraint cloneIfInUse()

Specified by:

cloneIfInUse in interface org.drools.base.rule.constraint.BetaNodeFieldConstraint