org.drools.core.rule.constraint
Class QueryNameConstraint

java.lang.Object
  org.drools.core.rule.constraint.QueryNameConstraint

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, IndexableConstraint, Acceptor, AcceptsReadAccessor, AlphaNodeFieldConstraint, Constraint, RuleComponent

public class QueryNameConstraint
extends Object
implements AlphaNodeFieldConstraint, IndexableConstraint, AcceptsReadAccessor, Externalizable

See Also:

Serialized Form

Nested Class Summary

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

Constraint.ConstraintType

Constructor Summary

QueryNameConstraint()

QueryNameConstraint(InternalReadAccessor readAccessor, String queryName)

Method Summary

Constraint	clone() Clones the constraint
QueryNameConstraint	cloneIfInUse() Clone this constraints only if it is already used by a different node, otherwise returns this
ContextEntry	createContextEntry()
boolean	equals(Object obj)
IndexUtil.ConstraintType	getConstraintType()
FieldValue	getField()
InternalReadAccessor	getFieldExtractor()
AbstractHashTable.FieldIndex	getFieldIndex()
String	getQueryName()
Declaration[]	getRequiredDeclarations() Returns all the declarations required by the given constraint implementation.
Constraint.ConstraintType	getType() Returns the type of the constraint, either ALPHA, BETA or UNKNOWN
int	hashCode()
boolean	isAllowed(InternalFactHandle handle, InternalWorkingMemory workingMemory, ContextEntry context)
boolean	isIndexable(short nodeType)
boolean	isTemporal() Returns true in case this constraint is a temporal constraint
boolean	isUnification()
void	readExternal(ObjectInput in)
void	replaceDeclaration(Declaration oldDecl, Declaration newDecl) When a rule contains multiple logical branches, i.e., makes use of 'OR' CE, it is required to clone patterns and declarations for each logical branch.
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

QueryNameConstraint

public QueryNameConstraint()

QueryNameConstraint

public QueryNameConstraint(InternalReadAccessor readAccessor,
                           String queryName)

Method Detail

createContextEntry

public ContextEntry createContextEntry()

Specified by:

createContextEntry in interface AlphaNodeFieldConstraint

isAllowed

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

Specified by:

isAllowed in interface AlphaNodeFieldConstraint

isUnification

public boolean isUnification()

Specified by:

isUnification in interface IndexableConstraint

isIndexable

public boolean isIndexable(short nodeType)

Specified by:

isIndexable in interface IndexableConstraint

getConstraintType

public IndexUtil.ConstraintType getConstraintType()

Specified by:

getConstraintType in interface IndexableConstraint

getField

public FieldValue getField()

Specified by:

getField in interface IndexableConstraint

getFieldIndex

public AbstractHashTable.FieldIndex getFieldIndex()

Specified by:

getFieldIndex in interface IndexableConstraint

getFieldExtractor

public InternalReadAccessor getFieldExtractor()

Specified by:

getFieldExtractor in interface IndexableConstraint

setReadAccessor

public void setReadAccessor(InternalReadAccessor readAccessor)

Specified by:

setReadAccessor in interface AcceptsReadAccessor

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Description copied from interface: Constraint

Returns all the declarations required by the given constraint implementation.

Specified by:

getRequiredDeclarations in interface Constraint

Returns:

replaceDeclaration

public void replaceDeclaration(Declaration oldDecl,
                               Declaration newDecl)

Description copied from interface: Constraint

When a rule contains multiple logical branches, i.e., makes use of 'OR' CE, it is required to clone patterns and declarations for each logical branch. Since this is done at ReteOO build type, when constraints were already created, eventually some constraints need to update their references to the declarations.

Specified by:

replaceDeclaration in interface Constraint

clone

public Constraint clone()

Description copied from interface: Constraint

Clones the constraint

Specified by:

clone in interface Constraint

Overrides:

clone in class Object

Returns:

getQueryName

public String getQueryName()

getType

public Constraint.ConstraintType getType()

Description copied from interface: Constraint

Returns the type of the constraint, either ALPHA, BETA or UNKNOWN

Specified by:

getType in interface Constraint

Returns:

isTemporal

public boolean isTemporal()

Description copied from interface: Constraint

Returns true in case this constraint is a temporal constraint

Specified by:

isTemporal in interface Constraint

Returns:

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

cloneIfInUse

public QueryNameConstraint cloneIfInUse()

Description copied from interface: AlphaNodeFieldConstraint

Clone this constraints only if it is already used by a different node, otherwise returns this

Specified by:

cloneIfInUse in interface AlphaNodeFieldConstraint

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object