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jeops.rete
Class JoinReteNode  

java.lang.Object
  jeops.rete.ReteNode
      jeops.rete.JoinReteNode

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public class JoinReteNode

extends ReteNode

A node in the Rete network that has more than one input, so that objects coming from distinct parts of the network are joined together in instances of this class.

Version:

1.0 14 Jul 2000

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Field Summary
private  java.lang.Object[]	ARRAY           Object array, defined as an attribute for efficiency purposes only.
private  int	declIndex
private  java.util.Iterator[]	its           Iterator array, defined as an attribute for efficiency purposes only.
private  jeops.AbstractRuleBase	ruleBase           The rule base used to check the validity of the property of the incoming objects.
private  int	ruleIndex           The index of the rule that contains the condition to be checked by this node.
private  java.util.List[]	waitingObjects           The objects that are "waiting" at some inputs of this node for the arrival of objects in other inputs, in order to be propagated at this node.

 

Fields inherited from class jeops.rete.ReteNode

 

Constructor Summary

JoinReteNode(int numberInputs, jeops.AbstractRuleBase ruleBase, int ruleIndex, int declIndex)           Class constructor.

 

Method Summary
void	flush()           Remove all objects that may be stored in this node.
void	newObject(java.lang.Object obj, int input)           Informs this node that an object has arrived.
void	remove(java.lang.Object obj)           Remove the given object from the memory of this node.
java.lang.String	toString()           Returns a string representation of this object.

 

Methods inherited from class jeops.rete.ReteNode

addSuccessor, addSuccessor, addSuccessor, getNumberInputs, getNumberOutputs, getSuccessors, propagate

 

Methods inherited from class java.lang.Object

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

 

Field Detail

waitingObjects

private java.util.List[] waitingObjects

The objects that are "waiting" at some inputs of this node for the arrival of objects in other inputs, in order to be propagated at this node. It's actually a list of lists, where for every input of this node there is a list of the objects entered by that input.

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ruleBase

private jeops.AbstractRuleBase ruleBase

The rule base used to check the validity of the property of the incoming objects.

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ruleIndex

private int ruleIndex

The index of the rule that contains the condition to be checked by this node.

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declIndex

private int declIndex

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ARRAY

private final java.lang.Object[] ARRAY

Object array, defined as an attribute for efficiency purposes only.

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its

private final java.util.Iterator[] its

Iterator array, defined as an attribute for efficiency purposes only.

Constructor Detail

JoinReteNode

public JoinReteNode(int numberInputs,
                    jeops.AbstractRuleBase ruleBase,
                    int ruleIndex,
                    int declIndex)

Class constructor.

Method Detail

flush

public void flush()

Remove all objects that may be stored in this node.

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newObject

public void newObject(java.lang.Object obj,
                      int input)

Informs this node that an object has arrived.

Specified by:

newObject in class ReteNode

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remove

public void remove(java.lang.Object obj)

Remove the given object from the memory of this node.

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toString

public java.lang.String toString()

Returns a string representation of this object. Useful for debugging.

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