org.drools.rule
Class UnificationRestriction

java.lang.Object
  extended by 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


Copyright © 2001-2012 JBoss by Red Hat. All Rights Reserved.