org.eclipse.incquery.runtime.rete.single

Class FilterNode

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.FilterNode

All Implemented Interfaces:

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.

Author:

Gabor Bergmann

Constructor Summary

Constructors

Constructor and Description
FilterNode(ReteContainer reteContainer)

Method Summary

Modifier and Type	Method and Description
abstract boolean	check(Tuple ps) Abstract filtering predicate.
void	pullInto(java.util.Collection<Tuple> collector) pulls the contents of this object in this particular moment into a target collection
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

FilterNode

public FilterNode(ReteContainer reteContainer)

Method Detail

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(java.util.Collection<Tuple> collector)

Description copied from interface: Supplier

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

update

public void update(Direction direction,
                   Tuple updateElement)

Description copied from interface: Receiver

updates the receiver with a newly found or lost partial matching