Package org.drools.core.rule

Class ReturnValueRestriction

java.lang.Object

org.drools.core.rule.ReturnValueRestriction

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, Acceptor, AcceptsReadAccessor, Restriction, Wireable

public class ReturnValueRestriction
extends Object
implements Restriction, AcceptsReadAccessor, Wireable

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ReturnValueRestriction.ReturnValueContextEntry

Nested classes/interfaces inherited from interface org.drools.core.spi.Wireable

Wireable.Immutable

Constructor Summary

Constructors

Constructor	Description
ReturnValueRestriction()
ReturnValueRestriction(InternalReadAccessor fieldExtractor, Declaration[] previousDeclarations, Declaration[] localDeclarations, String[] requiredGlobals, Evaluator evaluator)
ReturnValueRestriction(InternalReadAccessor fieldExtractor, ReturnValueExpression returnValueExpression, Declaration[] previousDeclarations, Declaration[] localDeclarations, String[] requiredGlobals, Evaluator evaluator)

Method Summary

Modifier and Type	Method	Description
ReturnValueRestriction	clone()
ContextEntry	createContextEntry()
boolean	equals(Object object)
Evaluator	getEvaluator()
ReturnValueExpression	getExpression()
Declaration[]	getLocalDeclarations()
Declaration[]	getPreviousDeclarations()
Declaration[]	getRequiredDeclarations()
String[]	getRequiredGlobals()
int	hashCode()
boolean	isAllowed(InternalReadAccessor extractor, InternalFactHandle handle, InternalWorkingMemory workingMemory, ContextEntry context)
boolean	isAllowed(InternalReadAccessor readAccessor, InternalFactHandle handle, Tuple tuple, WorkingMemory workingMemory, ContextEntry context)
boolean	isAllowedCachedLeft(ContextEntry context, InternalFactHandle handle)
boolean	isAllowedCachedRight(Tuple 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	setReturnValueExpression(ReturnValueExpression expression)
void	wire(Object object)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReturnValueRestriction

public ReturnValueRestriction()

ReturnValueRestriction

public ReturnValueRestriction(InternalReadAccessor fieldExtractor,
                              Declaration[] previousDeclarations,
                              Declaration[] localDeclarations,
                              String[] requiredGlobals,
                              Evaluator evaluator)

ReturnValueRestriction

public ReturnValueRestriction(InternalReadAccessor fieldExtractor,
                              ReturnValueExpression returnValueExpression,
                              Declaration[] previousDeclarations,
                              Declaration[] localDeclarations,
                              String[] requiredGlobals,
                              Evaluator evaluator)

Method Detail

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

setReadAccessor

public void setReadAccessor(InternalReadAccessor readAccessor)

Specified by:

setReadAccessor in interface AcceptsReadAccessor

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Specified by:

getRequiredDeclarations in interface Restriction

getPreviousDeclarations

public Declaration[] getPreviousDeclarations()

getLocalDeclarations

public Declaration[] getLocalDeclarations()

getRequiredGlobals

public String[] getRequiredGlobals()

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

wire

public void wire(Object object)

Specified by:

wire in interface Wireable

setReturnValueExpression

public void setReturnValueExpression(ReturnValueExpression expression)

getExpression

public ReturnValueExpression getExpression()

getEvaluator

public Evaluator getEvaluator()

Specified by:

getEvaluator 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:

isAllowed

public boolean isAllowed(InternalReadAccessor readAccessor,
                         InternalFactHandle handle,
                         Tuple tuple,
                         WorkingMemory workingMemory,
                         ContextEntry context)

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(Tuple tuple,
                                    ContextEntry context)

Specified by:

isAllowedCachedRight in interface Restriction

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 ReturnValueRestriction clone()

Specified by:

clone in interface Restriction

Overrides:

clone in class Object