EvalConditionNode (Drools 4.0.0.11754MR2 API) - JBoss RULES 4.0.0.11754MR2 API 英文版文档

org.drools.reteoo
Class EvalConditionNode

java.lang.Object
  org.drools.common.BaseNode
      org.drools.reteoo.TupleSource
          org.drools.reteoo.EvalConditionNode

All Implemented Interfaces:

Serializable, NetworkNode, NodeMemory, TupleSink, TupleSinkNode

public class EvalConditionNode
extends TupleSource
implements TupleSinkNode, NodeMemory

Node which filters ReteTuples.

Using a semantic Test, this node may allow or disallow Tuples to proceed further through the Rete-OO network.

Author:

Mark Proctor, Bob McWhirter

See Also:

EvalConditionNode, Eval, ReteTuple, Serialized Form

Field Summary

 

Fields inherited from class org.drools.reteoo.TupleSource
sink

 

Fields inherited from class org.drools.common.BaseNode
hasMemory, id, sharedCount

 

Constructor Summary
EvalConditionNode(int id, TupleSource tupleSource, EvalCondition eval)           Construct.

 

Method Summary
void	assertTuple(ReteTuple tuple, PropagationContext context, InternalWorkingMemory workingMemory)           Assert a new Tuple.
void	attach()           Attaches this node into the network.
void	attach(InternalWorkingMemory[] workingMemories)
Object	createMemory(RuleBaseConfiguration config)
boolean	equals(Object object)
EvalCondition	getCondition()           Retrieve the Test associated with this node.
TupleSinkNode	getNextTupleSinkNode()           Returns the next node
TupleSinkNode	getPreviousTupleSinkNode()           Returns the previous node
int	hashCode()           The hashCode return is simply the unique id of the node.
void	remove(BaseNode node, InternalWorkingMemory[] workingMemories)           Removes the node from teh network.
void	retractTuple(ReteTuple tuple, PropagationContext context, InternalWorkingMemory workingMemory)
void	setNextTupleSinkNode(TupleSinkNode next)           Sets the next node
void	setPreviousTupleSinkNode(TupleSinkNode previous)           Sets the previous node
String	toString()           Produce a debug string.
void	updateSink(TupleSink sink, PropagationContext context, InternalWorkingMemory workingMemory)

 

Methods inherited from class org.drools.reteoo.TupleSource
addTupleSink, getSinkPropagator, removeTupleSink

 

Methods inherited from class org.drools.common.BaseNode
addShare, getId, getSharedCount, hasMemory, isInUse, isShared, removeShare, setHasMemory

 

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Methods inherited from interface org.drools.common.NodeMemory
getId

 

Constructor Detail

EvalConditionNode

public EvalConditionNode(int id,
                         TupleSource tupleSource,
                         EvalCondition eval)

Construct.

Parameters:

rule - The rule

tupleSource - The source of incoming Tuples.

eval -

attach

public void attach()

Attaches this node into the network.

Specified by:

attach in class BaseNode

attach

public void attach(InternalWorkingMemory[] workingMemories)

Specified by:

attach in class BaseNode

getCondition

public EvalCondition getCondition()

Retrieve the Test associated with this node.

Returns:

The Test.

assertTuple

public void assertTuple(ReteTuple tuple,
                        PropagationContext context,
                        InternalWorkingMemory workingMemory)

Assert a new Tuple.

Specified by:

assertTuple in interface TupleSink

Parameters:

tuple - The Tuple being asserted.

workingMemory - The working memory seesion.

context - The PropagationContext of the WorkingMemory action

Throws:

AssertionException - If an error occurs while asserting.

public void retractTuple(ReteTuple tuple,
                         PropagationContext context,
                         InternalWorkingMemory workingMemory)

public String toString()

public int hashCode()

public boolean equals(Object object)

public Object createMemory(RuleBaseConfiguration config)

public void updateSink(TupleSink sink,
                       PropagationContext context,
                       InternalWorkingMemory workingMemory)

public void remove(BaseNode node,
                   InternalWorkingMemory[] workingMemories)

public TupleSinkNode getNextTupleSinkNode()

public void setNextTupleSinkNode(TupleSinkNode next)

public TupleSinkNode getPreviousTupleSinkNode()

public void setPreviousTupleSinkNode(TupleSinkNode previous)