Package tools.refinery.interpreter.rete.single

Class FilterNode

java.lang.Object

tools.refinery.interpreter.rete.network.BaseNode

tools.refinery.interpreter.rete.network.StandardNode

tools.refinery.interpreter.rete.single.SingleInputNode

tools.refinery.interpreter.rete.single.FilterNode

All Implemented Interfaces:

NetworkStructureChangeSensitiveNode, Node, Receiver, Supplier, Tunnel

Direct Known Subclasses:

EqualityFilterNode, ExternalInputStatelessFilterNode, InequalityFilterNode, ValueBinderFilterNode

public abstract class FilterNode
extends SingleInputNode

This node implements a simple filter. A stateless abstract check() predicate determines whether a matching is allowed to pass.

Field Summary

Fields inherited from class tools.refinery.interpreter.rete.single.SingleInputNode

mailbox, parent

Fields inherited from class tools.refinery.interpreter.rete.network.StandardNode

childMailboxes, children

Fields inherited from class tools.refinery.interpreter.rete.network.BaseNode

nodeId, reteContainer, tag, traceInfos

Constructor Summary

Constructors

Constructor	Description
FilterNode(ReteContainer reteContainer)

Method Summary

Modifier and Type	Method	Description
abstract boolean	check(Tuple ps)	Abstract filtering predicate.
void	pullInto(Collection<Tuple> collector, boolean flush)	Pulls the contents of this object in this particular moment into a target collection.
void	pullIntoWithTimeline(Map<Tuple,Timeline<Timestamp>> collector, boolean flush)
void	update(Direction direction, Tuple updateElement, Timestamp timestamp)	Updates the receiver with a newly found or lost partial matching.

Methods inherited from class tools.refinery.interpreter.rete.single.SingleInputNode

appendParent, assignTraceInfo, getCommunicationTracker, getMailbox, getParents, instantiateMailbox, propagatePullInto, propagatePullIntoWithTimestamp, removeParent

Methods inherited from class tools.refinery.interpreter.rete.network.StandardNode

appendChild, constructIndex, getChildMailboxes, getPulledContents, getReceivers, issueError, networkStructureChanged, propagateUpdate, removeChild

Methods inherited from class tools.refinery.interpreter.rete.network.BaseNode

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface tools.refinery.interpreter.rete.network.Node

acceptPropagatedTraceInfo, getContainer, getNodeId, getTag, getTraceInfos, setTag

Methods inherited from interface tools.refinery.interpreter.rete.network.Receiver

batchUpdate

Methods inherited from interface tools.refinery.interpreter.rete.network.Supplier

appendChild, constructIndex, getPulledContents, getPulledContents, getReceivers, removeChild

Constructor Details

FilterNode

public FilterNode(ReteContainer reteContainer)

Method Details

check

public abstract boolean check(Tuple ps)

Abstract filtering predicate. Expected to be stateless.

Parameters:

ps - the matching to be checked.

Returns:

true if and only if the parameter matching is allowed to pass through this node.

pullInto

public void pullInto(Collection<Tuple> collector,
 boolean flush)

Description copied from interface: Supplier

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

Parameters:

flush - if true, flushing of messages is allowed during the pull, otherwise flushing is not allowed

pullIntoWithTimeline

public void pullIntoWithTimeline(Map<Tuple,Timeline<Timestamp>> collector,
 boolean flush)

update

public void update(Direction direction,
 Tuple updateElement,
 Timestamp timestamp)

Description copied from interface: Receiver

Updates the receiver with a newly found or lost partial matching.