org.drools.rule
Class VariableRestriction

java.lang.Object
  org.drools.rule.VariableRestriction

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, Acceptor, AcceptsReadAccessor, Restriction

public class VariableRestriction
extends Object
implements AcceptsReadAccessor, Restriction

See Also:

Serialized Form

Nested Class Summary

static class	VariableRestriction.BooleanVariableContextEntry
static class	VariableRestriction.CharVariableContextEntry
static class	VariableRestriction.DoubleVariableContextEntry
static class	VariableRestriction.LongVariableContextEntry
static class	VariableRestriction.ObjectVariableContextEntry
static class	VariableRestriction.PrimitiveArrayVariableContextEntry
static class	VariableRestriction.VariableContextEntry

Constructor Summary

VariableRestriction()

VariableRestriction(InternalReadAccessor fieldExtractor, Declaration declaration, Evaluator evaluator)

Method Summary

Object	clone()
ContextEntry	createContextEntry()
boolean	equals(Object object)
Evaluator	getEvaluator()
Interval	getInterval()
InternalReadAccessor	getReadAccessor()
Declaration[]	getRequiredDeclarations()
int	hashCode()
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)
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableRestriction

public VariableRestriction()

VariableRestriction

public VariableRestriction(InternalReadAccessor fieldExtractor,
                           Declaration declaration,
                           Evaluator evaluator)

Method Detail

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

setReadAccessor

public void setReadAccessor(InternalReadAccessor readAccessor)

Specified by:

setReadAccessor in interface AcceptsReadAccessor

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Specified by:

getRequiredDeclarations in interface Restriction

getReadAccessor

public InternalReadAccessor getReadAccessor()

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

getEvaluator

public Evaluator getEvaluator()

Specified by:

getEvaluator 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

isTemporal

public boolean isTemporal()

Description copied from interface: Restriction

Returns true if this is a temporal restriction

Specified by:

isTemporal in interface Restriction

Returns:

getInterval

public Interval getInterval()

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object object)

Overrides:

equals in class Object

createContextEntry

public ContextEntry createContextEntry()

Specified by:

createContextEntry in interface Restriction

clone

public Object clone()

Specified by:

clone in interface Restriction

Overrides:

clone in class Object