org.drools.reteoo
Class RightInputAdapterNode

java.lang.Object
  org.drools.common.BaseNode
      org.drools.reteoo.ObjectSource
          org.drools.reteoo.RightInputAdapterNode

All Implemented Interfaces:

java.io.Serializable, NetworkNode, NodeMemory, TupleSink, TupleSinkNode

public class RightInputAdapterNode
extends ObjectSource
implements TupleSinkNode, NodeMemory

When joining a subnetwork into the main network again, RightInputAdapterNode adapts the subnetwork's tuple into a fact in order right join it with the tuple being propagated in the main network.

Author:

Mark Proctor, Bob McWhirter, Edson Tirelli

See Also:

Serialized Form

Field Summary

protected boolean

tupleMemoryEnabled

Fields inherited from class org.drools.reteoo.ObjectSource

objectSource, sink

Fields inherited from class org.drools.common.BaseNode

id

Constructor Summary

RightInputAdapterNode(int id, TupleSource source, BuildContext context)
Constructor specifying the unique id of the node in the Rete network, the position of the propagating FactHandleImpl in ReteTuple and the source that propagates the receive ReteTuples.

Method Summary

void	assertTuple(ReteTuple tuple, PropagationContext context, InternalWorkingMemory workingMemory) Takes the asserted ReteTuple received from the TupleSource and adapts it into a FactHandleImpl
void	attach() Attaches the node into the network.
void	attach(InternalWorkingMemory[] workingMemories)
java.lang.Object	createMemory(RuleBaseConfiguration config) Creates and return the node memory
TupleSinkNode	getNextTupleSinkNode() Returns the next node
TupleSinkNode	getPreviousTupleSinkNode() Returns the previous node
boolean	isTupleMemoryEnabled()
void	remove(RuleRemovalContext context, BaseNode node, InternalWorkingMemory[] workingMemories) Removes the node from teh network.
void	retractTuple(ReteTuple tuple, PropagationContext context, InternalWorkingMemory workingMemory) Retracts the corresponding tuple by retrieving and retracting the fact created for it
void	setNextTupleSinkNode(TupleSinkNode next) Sets the next node
void	setPreviousTupleSinkNode(TupleSinkNode previous) Sets the previous node
void	setTupleMemoryEnabled(boolean tupleMemoryEnabled)
void	updateSink(ObjectSink sink, PropagationContext context, InternalWorkingMemory workingMemory)

Methods inherited from class org.drools.reteoo.ObjectSource

addObjectSink, getSinkPropagator, isInUse, removeObjectSink

Methods inherited from class org.drools.common.BaseNode

getId, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drools.common.NodeMemory

getId

Field Detail

tupleMemoryEnabled

protected boolean tupleMemoryEnabled

Constructor Detail

RightInputAdapterNode

public RightInputAdapterNode(int id,
                             TupleSource source,
                             BuildContext context)

Constructor specifying the unique id of the node in the Rete network, the position of the propagating FactHandleImpl in ReteTuple and the source that propagates the receive ReteTuples.

Parameters:

id - Unique id

source - The TupleSource which propagates the received ReteTuple

Method Detail

createMemory

public java.lang.Object createMemory(RuleBaseConfiguration config)

Creates and return the node memory

Specified by:

createMemory in interface NodeMemory

assertTuple

public void assertTuple(ReteTuple tuple,
                        PropagationContext context,
                        InternalWorkingMemory workingMemory)

Takes the asserted ReteTuple received from the TupleSource and adapts it into a FactHandleImpl

Specified by:

assertTuple in interface TupleSink

Parameters:

tuple - The asserted ReteTuple.

context - The PropagationContext of the WorkingMemory action.

workingMemory - the WorkingMemory session.

retractTuple

public void retractTuple(ReteTuple tuple,
                         PropagationContext context,
                         InternalWorkingMemory workingMemory)

Retracts the corresponding tuple by retrieving and retracting the fact created for it

Specified by:

retractTuple in interface TupleSink

attach

public void attach()

Description copied from class: BaseNode

Attaches the node into the network. Usually to the parent ObjectSource or TupleSource

Specified by:

attach in class BaseNode

attach

public void attach(InternalWorkingMemory[] workingMemories)

Specified by:

attach in class BaseNode

updateSink

public void updateSink(ObjectSink sink,
                       PropagationContext context,
                       InternalWorkingMemory workingMemory)

Specified by:

updateSink in class ObjectSource

remove

public void remove(RuleRemovalContext context,
                   BaseNode node,
                   InternalWorkingMemory[] workingMemories)

Description copied from class: BaseNode

Removes the node from teh network. Usually from the parent ObjectSource or TupleSource

Specified by:

remove in class BaseNode

isTupleMemoryEnabled

public boolean isTupleMemoryEnabled()

Specified by:

isTupleMemoryEnabled in interface TupleSink

setTupleMemoryEnabled

public void setTupleMemoryEnabled(boolean tupleMemoryEnabled)

Specified by:

setTupleMemoryEnabled in interface TupleSink

getNextTupleSinkNode

public TupleSinkNode getNextTupleSinkNode()

Returns the next node

Specified by:

getNextTupleSinkNode in interface TupleSinkNode

Returns:

The next TupleSinkNode

setNextTupleSinkNode

public void setNextTupleSinkNode(TupleSinkNode next)

Sets the next node

Specified by:

setNextTupleSinkNode in interface TupleSinkNode

Parameters:

next - The next TupleSinkNode

getPreviousTupleSinkNode

public TupleSinkNode getPreviousTupleSinkNode()

Returns the previous node

Specified by:

getPreviousTupleSinkNode in interface TupleSinkNode

Returns:

The previous TupleSinkNode

setPreviousTupleSinkNode

public void setPreviousTupleSinkNode(TupleSinkNode previous)

Sets the previous node

Specified by:

setPreviousTupleSinkNode in interface TupleSinkNode

Parameters:

previous - The previous TupleSinkNode