org.drools.reteoo
Class LeftTupleSource

java.lang.Object
  org.drools.common.BaseNode
      org.drools.reteoo.LeftTupleSource

All Implemented Interfaces:

Externalizable, Serializable, NetworkNode

Direct Known Subclasses:

BetaNode, EvalConditionNode, FromNode, LeftInputAdapterNode, QueryElementNode, QueryRiaFixerNode

public abstract class LeftTupleSource
extends BaseNode
implements Externalizable

A source of ReteTuple s for a TupleSink.

Nodes that propagate Tuples extend this class.

See Also:

LeftTupleSource, LeftTuple, Serialized Form

Field Summary

protected LeftTupleSinkPropagator

sink The destination for Tuples.

Fields inherited from class org.drools.common.BaseNode

associations, id, partitionId, partitionsEnabled

Constructor Summary

LeftTupleSource()

Method Summary

void	addTupleSink(LeftTupleSink tupleSink)
protected void	addTupleSink(LeftTupleSink tupleSink, BuildContext context) Adds the TupleSink so that it may receive Tuples propagated from this TupleSource.
static void	doModifyLeftTuple(InternalFactHandle factHandle, ModifyPreviousTuples modifyPreviousTuples, PropagationContext context, InternalWorkingMemory workingMemory, LeftTupleSink sink, int leftInputOtnId, long leftInferredMask)
long	getLeftDeclaredMask()
long	getLeftInferredMask()
int	getLeftInputOtnId()
long	getLeftNegativeMask()
ObjectType	getObjectType()
protected abstract ObjectTypeNode	getObjectTypeNode()
LeftTupleSinkPropagator	getSinkPropagator()
protected void	initDeclaredMask(BuildContext context, LeftTupleSource leftInput)
protected void	initInferredMask(LeftTupleSource leftInput)
protected void	initMasks(BuildContext context, LeftTupleSource leftInput)
boolean	isInUse() Returns true in case the current node is in use (is referenced by any other node)
void	modifyLeftTuple(InternalFactHandle factHandle, ModifyPreviousTuples modifyPreviousTuples, PropagationContext context, InternalWorkingMemory workingMemory)
void	readExternal(ObjectInput in)
protected void	removeTupleSink(LeftTupleSink tupleSink) Removes the TupleSink
protected void	setLeftInferredMask(long leftInferredMask)
void	setLeftInputOtnId(int leftInputOtnId)
protected void	setLeftListenedProperties(List<String> leftListenedProperties)
protected LeftTupleSource	unwrapLeftInput(LeftTupleSource leftInput)
abstract void	updateSink(LeftTupleSink sink, PropagationContext context, InternalWorkingMemory workingMemory)
void	writeExternal(ObjectOutput out)

Methods inherited from class org.drools.common.BaseNode

addAssociation, attach, attach, doRemove, getAssociations, getId, getPartitionId, hashCode, networkUpdated, remove, removeAssociation, setPartitionId, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

sink

protected LeftTupleSinkPropagator sink

The destination for Tuples.

Constructor Detail

LeftTupleSource

public LeftTupleSource()

Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class BaseNode

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class BaseNode

Throws:

IOException

addTupleSink

public void addTupleSink(LeftTupleSink tupleSink)

addTupleSink

protected void addTupleSink(LeftTupleSink tupleSink,
                            BuildContext context)

Adds the TupleSink so that it may receive Tuples propagated from this TupleSource.

Parameters:

tupleSink - The TupleSink to receive propagated Tuples.

removeTupleSink

protected void removeTupleSink(LeftTupleSink tupleSink)

Removes the TupleSink

Parameters:

tupleSink - The TupleSink to remove

getSinkPropagator

public LeftTupleSinkPropagator getSinkPropagator()

updateSink

public abstract void updateSink(LeftTupleSink sink,
                                PropagationContext context,
                                InternalWorkingMemory workingMemory)

isInUse

public boolean isInUse()

Description copied from class: BaseNode

Returns true in case the current node is in use (is referenced by any other node)

Specified by:

isInUse in class BaseNode

Returns:

initMasks

protected final void initMasks(BuildContext context,
                               LeftTupleSource leftInput)

initDeclaredMask

protected void initDeclaredMask(BuildContext context,
                                LeftTupleSource leftInput)

setLeftListenedProperties

protected void setLeftListenedProperties(List<String> leftListenedProperties)

initInferredMask

protected void initInferredMask(LeftTupleSource leftInput)

unwrapLeftInput

protected LeftTupleSource unwrapLeftInput(LeftTupleSource leftInput)

modifyLeftTuple

public void modifyLeftTuple(InternalFactHandle factHandle,
                            ModifyPreviousTuples modifyPreviousTuples,
                            PropagationContext context,
                            InternalWorkingMemory workingMemory)

doModifyLeftTuple

public static void doModifyLeftTuple(InternalFactHandle factHandle,
                                     ModifyPreviousTuples modifyPreviousTuples,
                                     PropagationContext context,
                                     InternalWorkingMemory workingMemory,
                                     LeftTupleSink sink,
                                     int leftInputOtnId,
                                     long leftInferredMask)

getLeftDeclaredMask

public long getLeftDeclaredMask()

getLeftInferredMask

public long getLeftInferredMask()

setLeftInferredMask

protected void setLeftInferredMask(long leftInferredMask)

getLeftNegativeMask

public long getLeftNegativeMask()

getLeftInputOtnId

public int getLeftInputOtnId()

setLeftInputOtnId

public void setLeftInputOtnId(int leftInputOtnId)

getObjectTypeNode

protected abstract ObjectTypeNode getObjectTypeNode()

getObjectType

public ObjectType getObjectType()