Package jadex.rules.rulesystem.rete.nodes

Class BetaNode

java.lang.Object

jadex.rules.rulesystem.rete.nodes.AbstractNode

jadex.rules.rulesystem.rete.nodes.AbstractBetaNode

jadex.rules.rulesystem.rete.nodes.BetaNode

All Implemented Interfaces:

INode, IObjectConsumerNode, ITupleConsumerNode, ITupleSourceNode, java.lang.Cloneable

public class BetaNode
extends AbstractBetaNode

A beta node has the purpose to perform a constraints check between (at least) two objects. The beta node has to incoming coming connections which both can activate the node.

Field Summary

Fields inherited from class jadex.rules.rulesystem.rete.nodes.AbstractBetaNode

evaluators, indexers, indirects, osource, relevants, tconsumers, tsource

Fields inherited from class jadex.rules.rulesystem.rete.nodes.AbstractNode

clones, nodeid

Constructor Summary

Constructors

Constructor	Description
BetaNode(int nodeid, IConstraintEvaluator[] evaluators, ConstraintIndexer[] xevaluators)	Create a new beta node.

Method Summary

Modifier and Type	Method	Description
protected void	addMatch(Tuple left, java.lang.Object right, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Add a match to the node memory and propagate if necessary.
boolean	checkNodeConsistency(ReteMemory mem)	Check the consistency of the node.
protected boolean	isMatchContained(IOAVState state, Tuple left, java.lang.Object right, ReteMemory mem)	Check if a match is contained.
void	modifyObject(java.lang.Object right, OAVAttributeType type, java.lang.Object oldvalue, java.lang.Object newvalue, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Propagate an object change to this node.
void	modifyTuple(Tuple left, int tupleindex, OAVAttributeType type, java.lang.Object oldvalue, java.lang.Object newvalue, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Modify a tuple in this node.
protected void	propagateModification(Tuple left, java.lang.Object right, int tupleindex, OAVAttributeType type, java.lang.Object oldvalue, java.lang.Object newvalue, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Propagate a change of a tuple in the result memory.
protected void	removeMatch(Tuple left, java.lang.Object right, IOAVState state, ReteMemory mem, AbstractAgenda agenda)	Remove a match from the node memory and propagate if necessary.

Methods inherited from class jadex.rules.rulesystem.rete.nodes.AbstractBetaNode

addObject, addTuple, addTupleConsumer, checkNonindexedConstraints, createNodeMemory, doClone, fetchObjectMemory, fetchTupleMemory, getConstraintEvaluators, getConstraintIndexers, getIndirectAttributes, getNodeMemory, getObjectSource, getRelevantAttributes, getTupleConsumers, getTupleSource, identityIntersection, intersection, isAffected, modifyIndirectObject, removeObject, removeTuple, removeTupleConsumer, setObjectSource, setTupleSource

Methods inherited from class jadex.rules.rulesystem.rete.nodes.AbstractNode

clone, equals, getNodeId, hashCode, toString, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface jadex.rules.rulesystem.rete.nodes.INode

clone, getNodeId

Constructor Detail

BetaNode

public BetaNode(int nodeid,
                IConstraintEvaluator[] evaluators,
                ConstraintIndexer[] xevaluators)

Create a new beta node.

Method Detail

modifyTuple

public void modifyTuple(Tuple left,
                        int tupleindex,
                        OAVAttributeType type,
                        java.lang.Object oldvalue,
                        java.lang.Object newvalue,
                        IOAVState state,
                        ReteMemory mem,
                        AbstractAgenda agenda)

Modify a tuple in this node.

Specified by:

modifyTuple in interface ITupleConsumerNode

Overrides:

modifyTuple in class AbstractBetaNode

Parameters:

left - The tuple.

modifyObject

public void modifyObject(java.lang.Object right,
                         OAVAttributeType type,
                         java.lang.Object oldvalue,
                         java.lang.Object newvalue,
                         IOAVState state,
                         ReteMemory mem,
                         AbstractAgenda agenda)

Propagate an object change to this node.

Specified by:

modifyObject in interface IObjectConsumerNode

Overrides:

modifyObject in class AbstractBetaNode

Parameters:

right - The new object.

addMatch

protected void addMatch(Tuple left,
                        java.lang.Object right,
                        IOAVState state,
                        ReteMemory mem,
                        AbstractAgenda agenda)

Add a match to the node memory and propagate if necessary.

Specified by:

addMatch in class AbstractBetaNode

removeMatch

protected void removeMatch(Tuple left,
                           java.lang.Object right,
                           IOAVState state,
                           ReteMemory mem,
                           AbstractAgenda agenda)

Remove a match from the node memory and propagate if necessary.

Specified by:

removeMatch in class AbstractBetaNode

propagateModification

protected void propagateModification(Tuple left,
                                     java.lang.Object right,
                                     int tupleindex,
                                     OAVAttributeType type,
                                     java.lang.Object oldvalue,
                                     java.lang.Object newvalue,
                                     IOAVState state,
                                     ReteMemory mem,
                                     AbstractAgenda agenda)

Propagate a change of a tuple in the result memory.

Specified by:

propagateModification in class AbstractBetaNode

isMatchContained

protected boolean isMatchContained(IOAVState state,
                                   Tuple left,
                                   java.lang.Object right,
                                   ReteMemory mem)

Check if a match is contained.

Specified by:

isMatchContained in class AbstractBetaNode

checkNodeConsistency

public boolean checkNodeConsistency(ReteMemory mem)

Check the consistency of the node.

Specified by:

checkNodeConsistency in interface INode

Overrides:

checkNodeConsistency in class AbstractNode