org.drools.reteoo
Class FromNode

java.lang.Object
  org.drools.common.BaseNode
      org.drools.reteoo.TupleSource
          org.drools.reteoo.FromNode

All Implemented Interfaces:

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

public class FromNode
extends TupleSource
implements TupleSinkNode, NodeMemory

See Also:

Serialized Form

Nested Class Summary

static class

FromNode.FromMemory

Field Summary

protected boolean

tupleMemoryEnabled

Fields inherited from class org.drools.reteoo.TupleSource

sink

Fields inherited from class org.drools.common.BaseNode

id

Constructor Summary

FromNode(int id, DataProvider dataProvider, TupleSource tupleSource, AlphaNodeFieldConstraint[] constraints, BetaConstraints binder)

Method Summary

void	assertTuple(ReteTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory) Assert a new ReteTuple.
void	attach() Attaches the node into the network.
void	attach(InternalWorkingMemory[] workingMemories)
java.lang.Object	createMemory(RuleBaseConfiguration config)
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 leftTuple, PropagationContext context, InternalWorkingMemory workingMemory)
void	setNextTupleSinkNode(TupleSinkNode next) Sets the next node
void	setPreviousTupleSinkNode(TupleSinkNode previous) Sets the previous node
void	setTupleMemoryEnabled(boolean tupleMemoryEnabled)
void	updateSink(TupleSink sink, PropagationContext context, InternalWorkingMemory workingMemory)

Methods inherited from class org.drools.reteoo.TupleSource

addTupleSink, getSinkPropagator, isInUse, removeTupleSink

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

FromNode

public FromNode(int id,
                DataProvider dataProvider,
                TupleSource tupleSource,
                AlphaNodeFieldConstraint[] constraints,
                BetaConstraints binder)

Method Detail

assertTuple

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

Description copied from interface: TupleSink

Assert a new ReteTuple.

Specified by:

assertTuple in interface TupleSink

Parameters:

leftTuple - The ReteTuple to propagate.

context - The PropagationContext of the WorkingMemory action

workingMemory - the WorkingMemory session.

retractTuple

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

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

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

updateSink

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

Specified by:

updateSink in class TupleSource

createMemory

public java.lang.Object createMemory(RuleBaseConfiguration config)

Specified by:

createMemory in interface NodeMemory

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