org.drools.rule
Class UnificationRestriction

java.lang.Object
  org.drools.rule.UnificationRestriction

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, Acceptor, AcceptsReadAccessor, Restriction

public class UnificationRestriction
extends Object
implements AcceptsReadAccessor, Restriction

See Also:

Serialized Form

Nested Class Summary

static class

UnificationRestriction.UnificationContextEntry

Constructor Summary

UnificationRestriction()

UnificationRestriction(VariableRestriction vr)

Method Summary

Object	clone()
ContextEntry	createContextEntry()
Evaluator	getEvaluator()
Interval	getInterval()
InternalReadAccessor	getReadAccessor()
Declaration[]	getRequiredDeclarations()
VariableRestriction	getVariableRestriction()
boolean	isAllowed(InternalReadAccessor extractor, InternalFactHandle handle, InternalWorkingMemory workingMemory, ContextEntry context)
boolean	isAllowedCachedLeft(ContextEntry context, InternalFactHandle handle)
boolean	isAllowedCachedRight(LeftTuple tuple, ContextEntry context)
boolean	isTemporal() Returns true if this is a temporal restriction
void	readExternal(ObjectInput in)
void	replaceDeclaration(Declaration oldDecl, Declaration newDecl) A restriction may be required to replace an old declaration object by a new updated one
void	setReadAccessor(InternalReadAccessor readAccessor)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

UnificationRestriction

public UnificationRestriction()

UnificationRestriction

public UnificationRestriction(VariableRestriction vr)

Method Detail

createContextEntry

public ContextEntry createContextEntry()

Specified by:

createContextEntry in interface Restriction

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Specified by:

getRequiredDeclarations in interface Restriction

isAllowed

public boolean isAllowed(InternalReadAccessor extractor,
                         InternalFactHandle handle,
                         InternalWorkingMemory workingMemory,
                         ContextEntry context)

Specified by:

isAllowed in interface Restriction

isAllowedCachedLeft

public boolean isAllowedCachedLeft(ContextEntry context,
                                   InternalFactHandle handle)

Specified by:

isAllowedCachedLeft in interface Restriction

isAllowedCachedRight

public boolean isAllowedCachedRight(LeftTuple tuple,
                                    ContextEntry context)

Specified by:

isAllowedCachedRight in interface Restriction

getVariableRestriction

public VariableRestriction getVariableRestriction()

getReadAccessor

public InternalReadAccessor getReadAccessor()

getEvaluator

public Evaluator getEvaluator()

Specified by:

getEvaluator in interface Restriction

getInterval

public Interval getInterval()

isTemporal

public boolean isTemporal()

Description copied from interface: Restriction

Returns true if this is a temporal restriction

Specified by:

isTemporal in interface Restriction

Returns:

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

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

clone

public Object clone()

Specified by:

clone in interface Restriction

Overrides:

clone in class Object

setReadAccessor

public void setReadAccessor(InternalReadAccessor readAccessor)

Specified by:

setReadAccessor in interface AcceptsReadAccessor