org.eclipse.incquery.runtime.rete.single

Class TransitiveClosureNode

java.lang.Object

org.eclipse.incquery.runtime.rete.network.BaseNode

org.eclipse.incquery.runtime.rete.network.StandardNode

org.eclipse.incquery.runtime.rete.single.SingleInputNode

org.eclipse.incquery.runtime.rete.single.TransitiveClosureNode

All Implemented Interfaces:

ITcObserver<java.lang.Object>, Node, Receiver, Supplier, Tunnel, Clearable

public class TransitiveClosureNode
extends SingleInputNode
implements Clearable, ITcObserver<java.lang.Object>

This class represents a transitive closure node in the rete net.

Author:

Gabor Bergmann

Constructor Summary

Constructors

Constructor and Description
TransitiveClosureNode(ReteContainer reteContainer) Create a new transitive closure rete node.

Method Summary

Modifier and Type	Method and Description
void	clear() Clear all partial matchings stored in memory
void	pullInto(java.util.Collection<Tuple> collector) pulls the contents of this object in this particular moment into a target collection
void	reinitializeWith(java.util.Collection<Tuple> tuples) Initializes the graph data source with the given collection of tuples.
void	tupleDeleted(java.lang.Object source, java.lang.Object target) Used to notify when a tuple is deleted from the transitive closure relation.
void	tupleInserted(java.lang.Object source, java.lang.Object target) Used to notify when a tuple is inserted into the transitive closure relation.
void	update(Direction direction, Tuple updateElement) updates the receiver with a newly found or lost partial matching

Methods inherited from class org.eclipse.incquery.runtime.rete.single.SingleInputNode

appendParent, assignTraceInfo, getParents, propagatePullInto, removeParent

Methods inherited from class org.eclipse.incquery.runtime.rete.network.StandardNode

appendChild, constructIndex, getPulledContents, getReceivers, removeChild

Methods inherited from class org.eclipse.incquery.runtime.rete.network.BaseNode

acceptPropagatedTraceInfo, getContainer, getNodeId, getTag, getTraceInfos, setTag, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.incquery.runtime.rete.network.Supplier

appendChild, constructIndex, getPulledContents, getReceivers, removeChild

Methods inherited from interface org.eclipse.incquery.runtime.rete.network.Node

acceptPropagatedTraceInfo, getContainer, getNodeId, getTag, getTraceInfos, setTag

Constructor Detail

TransitiveClosureNode

public TransitiveClosureNode(ReteContainer reteContainer)

Create a new transitive closure rete node. Client may optionally call reinitializeWith(Collection) before using the node, instead of inserting the initial set of tuples one by one.

Parameters:

reteContainer - the rete container of the node

Method Detail

reinitializeWith

public void reinitializeWith(java.util.Collection<Tuple> tuples)

Initializes the graph data source with the given collection of tuples.

Parameters:

tuples - the initial collection of tuples

pullInto

public void pullInto(java.util.Collection<Tuple> collector)

Description copied from interface: Supplier

pulls the contents of this object in this particular moment into a target collection

Specified by:

pullInto in interface Supplier

update

public void update(Direction direction,
                   Tuple updateElement)

Description copied from interface: Receiver

updates the receiver with a newly found or lost partial matching

Specified by:

update in interface Receiver

clear

public void clear()

Description copied from interface: Clearable

Clear all partial matchings stored in memory

Specified by:

clear in interface Clearable

tupleInserted

public void tupleInserted(java.lang.Object source,
                          java.lang.Object target)

Description copied from interface: ITcObserver

Used to notify when a tuple is inserted into the transitive closure relation.

Specified by:

tupleInserted in interface ITcObserver<java.lang.Object>

Parameters:

source - the source of the tuple

target - the target of the tuple

tupleDeleted

public void tupleDeleted(java.lang.Object source,
                         java.lang.Object target)

Description copied from interface: ITcObserver

Used to notify when a tuple is deleted from the transitive closure relation.

Specified by:

tupleDeleted in interface ITcObserver<java.lang.Object>

Parameters:

source - the source of the tuple

target - the target of the tuple