org.eclipse.viatra.query.runtime.rete.index

Class IdentityIndexer

java.lang.Object

org.eclipse.viatra.query.runtime.rete.network.BaseNode

org.eclipse.viatra.query.runtime.rete.index.StandardIndexer

org.eclipse.viatra.query.runtime.rete.index.SpecializedProjectionIndexer

org.eclipse.viatra.query.runtime.rete.index.IdentityIndexer

All Implemented Interfaces:

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

Direct Known Subclasses:

MemoryIdentityIndexer

public abstract class IdentityIndexer
extends SpecializedProjectionIndexer

Defines an abstract trivial indexer that identically projects the contents of some stateful node, and can therefore save space. Can only exist in connection with a stateful store, and must be operated by another node (the active node). Do not attach parents directly!

Field Summary

Fields inherited from class org.eclipse.viatra.query.runtime.rete.index.SpecializedProjectionIndexer

activeNode

Fields inherited from class org.eclipse.viatra.query.runtime.rete.index.StandardIndexer

listeners, mask, parent

Fields inherited from class org.eclipse.viatra.query.runtime.rete.network.BaseNode

nodeId, reteContainer, tag, traceInfos

Constructor Summary

Constructors

Constructor and Description
IdentityIndexer(ReteContainer reteContainer, int tupleWidth, Supplier parent, Node activeNode)

Method Summary

Modifier and Type	Method and Description
protected boolean	contains(Tuple signature)
java.util.Collection<Tuple>	get(Tuple signature)
java.util.Collection<Tuple>	getSignatures() A collection consisting of exactly those signatures whose tuple group is not empty CONTRACT: do not modify
protected abstract java.util.Collection<Tuple>	getTuples()
java.util.Iterator<Tuple>	iterator()
void	propagate(Direction direction, Tuple updateElement)

Methods inherited from class org.eclipse.viatra.query.runtime.rete.index.SpecializedProjectionIndexer

getActiveNode

Methods inherited from class org.eclipse.viatra.query.runtime.rete.index.StandardIndexer

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

Methods inherited from class org.eclipse.viatra.query.runtime.rete.network.BaseNode

acceptPropagatedTraceInfo, getNodeId, getTag, getTraceInfoPatternsEnumerated, getTraceInfos, setTag, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.viatra.query.runtime.rete.index.Indexer

attachListener, detachListener, getListeners, getMask, getParent

Methods inherited from interface org.eclipse.viatra.query.runtime.rete.network.Node

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

IdentityIndexer

public IdentityIndexer(ReteContainer reteContainer,
                       int tupleWidth,
                       Supplier parent,
                       Node activeNode)

Method Detail

getTuples

protected abstract java.util.Collection<Tuple> getTuples()

get

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

Returns:

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

contains

protected boolean contains(Tuple signature)

Parameters:

signature -

Returns:

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

iterator

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

propagate

public void propagate(Direction direction,
                      Tuple updateElement)