org.drools.reteoo
Class ObjectSource

java.lang.Object
  org.drools.common.BaseNode
      org.drools.reteoo.ObjectSource

All Implemented Interfaces:

java.io.Serializable, NetworkNode

Direct Known Subclasses:

AlphaNode, ObjectTypeNode, Rete, RightInputAdapterNode

public abstract class ObjectSource
extends BaseNode
implements java.io.Serializable

A source of FactHandles for an ObjectSink.

Nodes that propagate FactHandleImpl extend this class.

Author:

Mark Proctor, Bob McWhirter

See Also:

ObjectSource, DefaultFactHandle, Serialized Form

Field Summary

protected ObjectSource	objectSource
protected ObjectSinkPropagator	sink The destination for FactHandleImpl.

Fields inherited from class org.drools.common.BaseNode

id

Method Summary

protected void	addObjectSink(ObjectSink objectSink) Adds the ObjectSink so that it may receive FactHandleImpl propagated from this ObjectSource.
ObjectSinkPropagator	getSinkPropagator()
boolean	isInUse() Returns true in case the current node is in use (is referenced by any other node)
protected void	removeObjectSink(ObjectSink objectSink) Removes the ObjectSink
abstract void	updateSink(ObjectSink sink, PropagationContext context, InternalWorkingMemory workingMemory)

Methods inherited from class org.drools.common.BaseNode

attach, attach, getId, hashCode, remove, toString

Methods inherited from class java.lang.Object

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

Field Detail

sink

protected ObjectSinkPropagator sink

The destination for FactHandleImpl.

objectSource

protected ObjectSource objectSource

Method Detail

addObjectSink

protected void addObjectSink(ObjectSink objectSink)

Adds the ObjectSink so that it may receive FactHandleImpl propagated from this ObjectSource.

Parameters:

objectSink - The ObjectSink to receive propagated FactHandleImpl.

removeObjectSink

protected void removeObjectSink(ObjectSink objectSink)

Removes the ObjectSink

Parameters:

objectSink - The ObjectSink to remove

updateSink

public abstract void updateSink(ObjectSink sink,
                                PropagationContext context,
                                InternalWorkingMemory workingMemory)

getSinkPropagator

public ObjectSinkPropagator getSinkPropagator()

isInUse

public boolean isInUse()

Description copied from class: BaseNode

Returns true in case the current node is in use (is referenced by any other node)

Specified by:

isInUse in class BaseNode

Returns: