org.eclipse.incquery.runtime.rete.index

Class GenericProjectionIndexer

java.lang.Object

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

org.eclipse.incquery.runtime.rete.index.StandardIndexer

org.eclipse.incquery.runtime.rete.index.IndexerWithMemory

org.eclipse.incquery.runtime.rete.index.GenericProjectionIndexer

All Implemented Interfaces:

java.lang.Iterable<Tuple>, Indexer, IterableIndexer, ProjectionIndexer, Node, Receiver

Direct Known Subclasses:

OnetimeIndexer

public class GenericProjectionIndexer
extends IndexerWithMemory
implements ProjectionIndexer

A generic Indexer capable of indexing along any valid TupleMask. Does not keep track of parents, because will not ever pull parents.

Author:

Gabor Bergmann

Constructor Summary

Constructors

Constructor and Description
GenericProjectionIndexer(ReteContainer reteContainer, TupleMask mask)

Method Summary

Modifier and Type	Method and Description
java.util.Collection<Tuple>	get(Tuple signature)
Receiver	getActiveNode() This indexer will be updated whenever a Rete update is sent to the active node (or an equivalent time slot allotted to it).
java.util.Collection<Tuple>	getSignatures() A collection consisting of exactly those signatures whose tuple group is not empty CONTRACT: do not modify
java.util.Iterator<Tuple>	iterator()

Methods inherited from class org.eclipse.incquery.runtime.rete.index.IndexerWithMemory

appendParent, getMemory, getParents, removeParent, update

Methods inherited from class org.eclipse.incquery.runtime.rete.index.StandardIndexer

assignTraceInfo, attachListener, detachListener, getContainer, getListeners, getMask, getParent

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

acceptPropagatedTraceInfo, 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.index.Indexer

attachListener, detachListener, getListeners, getMask, getParent

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

acceptPropagatedTraceInfo, assignTraceInfo, getContainer, getNodeId, getTag, getTraceInfos, setTag

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

GenericProjectionIndexer

public GenericProjectionIndexer(ReteContainer reteContainer,
                                TupleMask mask)

Method Detail

get

public java.util.Collection<Tuple> get(Tuple signature)

Specified by:

get in interface Indexer

Returns:

all stored tuples that conform to the specified signature, null if there are none such. CONTRACT: do not modify!

iterator

public java.util.Iterator<Tuple> iterator()

Specified by:

iterator in interface java.lang.Iterable<Tuple>

getSignatures

public java.util.Collection<Tuple> getSignatures()

Description copied from interface: IterableIndexer

A collection consisting of exactly those signatures whose tuple group is not empty CONTRACT: do not modify

Specified by:

getSignatures in interface IterableIndexer

getActiveNode

public Receiver getActiveNode()

Description copied from interface: Indexer

This indexer will be updated whenever a Rete update is sent to the active node (or an equivalent time slot allotted to it). The active node is typically the indexer itself, but it can be a different node such as its parent.

Specified by:

getActiveNode in interface Indexer

Returns:

the active node that operates this indexer