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

org.drools.reteoo
Class LeftInputAdapterNode

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

All Implemented Interfaces:

Serializable, NetworkNode, NodeMemory, ObjectSink, ObjectSinkNode

public class LeftInputAdapterNode
extends TupleSource
implements ObjectSinkNode, NodeMemory

All asserting Facts must propagated into the right ObjectSink side of a BetaNode, if this is the first Pattern then there are no BetaNodes to propagate to. LeftInputAdapter is used to adapt an ObjectSink propagation into a TupleSource which propagates a ReteTuple suitable fot the right ReteTuple side of a BetaNode.

Author:

Mark Proctor, Bob McWhirter

See Also:

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
LeftInputAdapterNode(int id, ObjectSource source)           Constructus a LeftInputAdapterNode with a unique id that receives FactHandle from a parent ObjectSource and adds it to a given pattern in the resulting Tuples.

 

Method Summary
void	assertObject(InternalFactHandle handle, PropagationContext context, InternalWorkingMemory workingMemory)           Takes the asserted FactHandleImpl received from the ObjectSource and puts it in a new ReteTuple before propagating to the TupleSinks
void	attach()           Attaches the node into the network.
void	attach(InternalWorkingMemory[] workingMemories)
Object	createMemory(RuleBaseConfiguration config)
boolean	equals(Object object)
ObjectSinkNode	getNextObjectSinkNode()           Returns the next node
ObjectSinkNode	getPreviousObjectSinkNode()           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	retractObject(InternalFactHandle handle, PropagationContext context, InternalWorkingMemory workingMemory)           Retract an existing FactHandleImpl by placing it in a new ReteTuple before proagating to the TupleSinks
void	setNextObjectSinkNode(ObjectSinkNode next)           Sets the next node
void	setPreviousObjectSinkNode(ObjectSinkNode previous)           Sets the previous node
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, toString

 

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

LeftInputAdapterNode

public LeftInputAdapterNode(int id,
                            ObjectSource source)

Constructus a LeftInputAdapterNode with a unique id that receives FactHandle from a parent ObjectSource and adds it to a given pattern in the resulting Tuples.

Parameters:

id - The unique id of this node in the current Rete network

source - The parent node, where Facts are propagated from

binder - An optional binder to filter out propagations. This binder will exist when a predicate is used in the first pattern, for instance

attach

public void attach()

Description copied from class: BaseNode

Attaches the node into the network. Usually to the parent ObjectSource or TupleSource

Specified by:

attach in class BaseNode

attach

public void attach(InternalWorkingMemory[] workingMemories)

Specified by:

attach in class BaseNode

assertObject

public void assertObject(InternalFactHandle handle,
                         PropagationContext context,
                         InternalWorkingMemory workingMemory)

Takes the asserted FactHandleImpl received from the ObjectSource and puts it in a new ReteTuple before propagating to the TupleSinks

Specified by:

assertObject in interface ObjectSink

Parameters:

handle - The asserted FactHandle/code>.

context - The PropagationContext of the WorkingMemory action.

workingMemory - the WorkingMemory session.

public void retractObject(InternalFactHandle handle,
                          PropagationContext context,
                          InternalWorkingMemory workingMemory)

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

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

public ObjectSinkNode getNextObjectSinkNode()

public void setNextObjectSinkNode(ObjectSinkNode next)

public ObjectSinkNode getPreviousObjectSinkNode()

public void setPreviousObjectSinkNode(ObjectSinkNode previous)

public int hashCode()

public boolean equals(Object object)

public Object createMemory(RuleBaseConfiguration config)