org.eclipse.incquery.runtime.rete.single

Class UniquenessEnforcerNode

java.lang.Object

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

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

org.eclipse.incquery.runtime.rete.single.UniquenessEnforcerNode

All Implemented Interfaces:

Node, Receiver, Supplier, Tunnel

Direct Known Subclasses:

DefaultProductionNode

public class UniquenessEnforcerNode
extends StandardNode
implements Tunnel

Ensures that no identical copies get to the output. Only one replica of each pattern substitution may traverse this node.

Author:

Gabor Bergmann

Constructor Summary

Constructors

Constructor and Description
UniquenessEnforcerNode(ReteContainer reteContainer, int tupleWidth)

Method Summary

Modifier and Type	Method and Description
void	appendParent(Supplier supplier) appends a parent that will continously send insert and revoke updates to this supplier
void	assignTraceInfo(TraceInfo traceInfo) assigns new traceability info to this node
ProjectionIndexer	constructIndex(TupleMask mask, TraceInfo... traces) Instantiates (or reuses, depending on implementation) an index according to the given mask.
MemoryIdentityIndexer	getIdentityIndexer()
TupleMemory	getMemory()
MemoryNullIndexer	getNullIndexer()
java.util.Collection<Supplier>	getParents() access active parent
void	pullInto(java.util.Collection<Tuple> collector) pulls the contents of this object in this particular moment into a target collection
void	removeParent(Supplier supplier) removes a parent
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.network.StandardNode

appendChild, 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, getPulledContents, getReceivers, removeChild

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

acceptPropagatedTraceInfo, getContainer, getNodeId, getTag, getTraceInfos, setTag

Constructor Detail

UniquenessEnforcerNode

public UniquenessEnforcerNode(ReteContainer reteContainer,
                              int tupleWidth)

Method Detail

getMemory

public TupleMemory getMemory()

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

constructIndex

public ProjectionIndexer constructIndex(TupleMask mask,
                                        TraceInfo... traces)

Description copied from interface: Supplier

Instantiates (or reuses, depending on implementation) an index according to the given mask. Intended for internal use; clients should invoke through Library instead to enable reusing.

Specified by:

constructIndex in interface Supplier

Overrides:

constructIndex in class StandardNode

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

getNullIndexer

public MemoryNullIndexer getNullIndexer()

getIdentityIndexer

public MemoryIdentityIndexer getIdentityIndexer()

appendParent

public void appendParent(Supplier supplier)

Description copied from interface: Receiver

appends a parent that will continously send insert and revoke updates to this supplier

Specified by:

appendParent in interface Receiver

removeParent

public void removeParent(Supplier supplier)

Description copied from interface: Receiver

removes a parent

Specified by:

removeParent in interface Receiver

getParents

public java.util.Collection<Supplier> getParents()

Description copied from interface: Receiver

access active parent

Specified by:

getParents in interface Receiver

assignTraceInfo

public void assignTraceInfo(TraceInfo traceInfo)

Description copied from interface: Node

assigns new traceability info to this node

Specified by:

assignTraceInfo in interface Node

Overrides:

assignTraceInfo in class BaseNode