org.drools.reteoo
Class RightInputAdapterNode

java.lang.Object
  extended by org.drools.common.BaseNode
      extended by org.drools.reteoo.ObjectSource
          extended by org.drools.reteoo.RightInputAdapterNode
All Implemented Interfaces:
Externalizable, Serializable, NetworkNode, NodeMemory, LeftTupleSink, LeftTupleSinkNode, Sink

public class RightInputAdapterNode
extends ObjectSource
implements LeftTupleSinkNode, NodeMemory

When joining a subnetwork into the main network again, RightInputAdapterNode adapts the subnetwork's tuple into a fact in order right join it with the tuple being propagated in the main network.

See Also:
Serialized Form

Field Summary
protected  boolean tupleMemoryEnabled
           
 
Fields inherited from class org.drools.reteoo.ObjectSource
sink, source
 
Fields inherited from class org.drools.common.BaseNode
associations, id, partitionId, partitionsEnabled
 
Constructor Summary
RightInputAdapterNode()
           
RightInputAdapterNode(int id, LeftTupleSource source, BuildContext context)
          Constructor specifying the unique id of the node in the Rete network, the position of the propagating FactHandleImpl in ReteTuple and the source that propagates the receive ReteTuples.
 
Method Summary
 void assertLeftTuple(LeftTuple tuple, PropagationContext context, InternalWorkingMemory workingMemory)
          Takes the asserted ReteTuple received from the TupleSource and adapts it into a FactHandleImpl
 void attach()
          Attaches the node into the network.
 void attach(InternalWorkingMemory[] workingMemories)
           
 Object createMemory(RuleBaseConfiguration config)
          Creates and return the node memory
protected  void doRemove(RuleRemovalContext context, ReteooBuilder builder, BaseNode node, InternalWorkingMemory[] workingMemories)
          Removes the node from teh network.
 boolean equals(Object object)
           
 LeftTupleSinkNode getNextLeftTupleSinkNode()
          Returns the next node
 LeftTupleSinkNode getPreviousLeftTupleSinkNode()
          Returns the previous node
 short getType()
           
 int hashCode()
          The hashCode return is simply the unique id of the node.
 boolean isLeftTupleMemoryEnabled()
           
 void modifyLeftTuple(InternalFactHandle factHandle, ModifyPreviousTuples modifyPreviousTuples, PropagationContext context, InternalWorkingMemory workingMemory)
           
 void modifyLeftTuple(LeftTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory)
           
 void networkUpdated()
          A method that is called for all nodes whose network below them changed, after the change is complete, providing them with an oportunity for state update
 void readExternal(ObjectInput in)
           
 void retractLeftTuple(LeftTuple tuple, PropagationContext context, InternalWorkingMemory workingMemory)
          Retracts the corresponding tuple by retrieving and retracting the fact created for it
 void setLeftTupleMemoryEnabled(boolean tupleMemoryEnabled)
           
 void setNextLeftTupleSinkNode(LeftTupleSinkNode next)
          Sets the next node
 void setPreviousLeftTupleSinkNode(LeftTupleSinkNode previous)
          Sets the previous node
 String toString()
           
 void updateSink(ObjectSink sink, PropagationContext context, InternalWorkingMemory workingMemory)
           
 void writeExternal(ObjectOutput out)
           
 
Methods inherited from class org.drools.reteoo.ObjectSource
addObjectSink, getParentObjectSource, getSinkPropagator, isInUse, removeObjectSink
 
Methods inherited from class org.drools.common.BaseNode
addAssociation, getAssociations, getId, getPartitionId, remove, removeAssociation, setPartitionId
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.drools.common.NetworkNode
getId, getPartitionId
 
Methods inherited from interface org.drools.common.NodeMemory
getId
 

Field Detail

tupleMemoryEnabled

protected boolean tupleMemoryEnabled
Constructor Detail

RightInputAdapterNode

public RightInputAdapterNode()

RightInputAdapterNode

public RightInputAdapterNode(int id,
                             LeftTupleSource source,
                             BuildContext context)
Constructor specifying the unique id of the node in the Rete network, the position of the propagating FactHandleImpl in ReteTuple and the source that propagates the receive ReteTuples.

Parameters:
id - Unique id
source - The TupleSource which propagates the received ReteTuple
Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException
Specified by:
readExternal in interface Externalizable
Overrides:
readExternal in class ObjectSource
Throws:
IOException
ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException
Specified by:
writeExternal in interface Externalizable
Overrides:
writeExternal in class ObjectSource
Throws:
IOException

createMemory

public Object createMemory(RuleBaseConfiguration config)
Creates and return the node memory

Specified by:
createMemory in interface NodeMemory

assertLeftTuple

public void assertLeftTuple(LeftTuple tuple,
                            PropagationContext context,
                            InternalWorkingMemory workingMemory)
Takes the asserted ReteTuple received from the TupleSource and adapts it into a FactHandleImpl

Specified by:
assertLeftTuple in interface LeftTupleSink
Parameters:
tuple - The asserted ReteTuple.
context - The PropagationContext of the WorkingMemory action.
workingMemory - the WorkingMemory session.

retractLeftTuple

public void retractLeftTuple(LeftTuple tuple,
                             PropagationContext context,
                             InternalWorkingMemory workingMemory)
Retracts the corresponding tuple by retrieving and retracting the fact created for it

Specified by:
retractLeftTuple in interface LeftTupleSink

modifyLeftTuple

public void modifyLeftTuple(InternalFactHandle factHandle,
                            ModifyPreviousTuples modifyPreviousTuples,
                            PropagationContext context,
                            InternalWorkingMemory workingMemory)
Specified by:
modifyLeftTuple in interface LeftTupleSink

modifyLeftTuple

public void modifyLeftTuple(LeftTuple leftTuple,
                            PropagationContext context,
                            InternalWorkingMemory workingMemory)
Specified by:
modifyLeftTuple in interface LeftTupleSink

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

networkUpdated

public void networkUpdated()
Description copied from class: BaseNode
A method that is called for all nodes whose network below them changed, after the change is complete, providing them with an oportunity for state update

Overrides:
networkUpdated in class ObjectSource

updateSink

public void updateSink(ObjectSink sink,
                       PropagationContext context,
                       InternalWorkingMemory workingMemory)
Specified by:
updateSink in class ObjectSource

doRemove

protected void doRemove(RuleRemovalContext context,
                        ReteooBuilder builder,
                        BaseNode node,
                        InternalWorkingMemory[] workingMemories)
Description copied from class: BaseNode
Removes the node from teh network. Usually from the parent ObjectSource or TupleSource

Overrides:
doRemove in class ObjectSource

isLeftTupleMemoryEnabled

public boolean isLeftTupleMemoryEnabled()
Specified by:
isLeftTupleMemoryEnabled in interface LeftTupleSink

setLeftTupleMemoryEnabled

public void setLeftTupleMemoryEnabled(boolean tupleMemoryEnabled)
Specified by:
setLeftTupleMemoryEnabled in interface LeftTupleSink

getNextLeftTupleSinkNode

public LeftTupleSinkNode getNextLeftTupleSinkNode()
Returns the next node

Specified by:
getNextLeftTupleSinkNode in interface LeftTupleSinkNode
Returns:
The next TupleSinkNode

setNextLeftTupleSinkNode

public void setNextLeftTupleSinkNode(LeftTupleSinkNode next)
Sets the next node

Specified by:
setNextLeftTupleSinkNode in interface LeftTupleSinkNode
Parameters:
next - The next TupleSinkNode

getPreviousLeftTupleSinkNode

public LeftTupleSinkNode getPreviousLeftTupleSinkNode()
Returns the previous node

Specified by:
getPreviousLeftTupleSinkNode in interface LeftTupleSinkNode
Returns:
The previous TupleSinkNode

setPreviousLeftTupleSinkNode

public void setPreviousLeftTupleSinkNode(LeftTupleSinkNode previous)
Sets the previous node

Specified by:
setPreviousLeftTupleSinkNode in interface LeftTupleSinkNode
Parameters:
previous - The previous TupleSinkNode

getType

public short getType()
Specified by:
getType in interface LeftTupleSink

hashCode

public int hashCode()
Description copied from class: BaseNode
The hashCode return is simply the unique id of the node. It is expected that base classes will also implement equals(Object object).

Overrides:
hashCode in class BaseNode

equals

public boolean equals(Object object)
Overrides:
equals in class Object

toString

public String toString()
Overrides:
toString in class BaseNode


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