org.drools.reteoo
Class QueryTerminalNode

java.lang.Object
  org.drools.common.BaseNode
      org.drools.reteoo.AbstractTerminalNode
          org.drools.reteoo.QueryTerminalNode

All Implemented Interfaces:

Externalizable, Serializable, NetworkNode, LeftTupleSink, LeftTupleSinkNode, Sink, TerminalNode

public class QueryTerminalNode
extends AbstractTerminalNode
implements LeftTupleSinkNode

Leaf Rete-OO node responsible for enacting Action s on a matched Rule.

See Also:

Rule, Serialized Form

Field Summary

static short

type

Fields inherited from class org.drools.common.BaseNode

associations, id, partitionId, partitionsEnabled

Constructor Summary

QueryTerminalNode()

QueryTerminalNode(int id, LeftTupleSource source, Rule rule, GroupElement subrule, int subruleIndex, BuildContext context)
Constructor

Method Summary

void	assertLeftTuple(LeftTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory) Assert a new Tuple.
void	attach(BuildContext context) Attaches the node into the network.
LeftTuple	createLeftTuple(InternalFactHandle factHandle, LeftTupleSink sink, boolean leftTupleMemoryEnabled)
LeftTuple	createLeftTuple(LeftTuple leftTuple, LeftTupleSink sink, boolean leftTupleMemoryEnabled)
LeftTuple	createLeftTuple(LeftTuple leftTuple, RightTuple rightTuple, LeftTuple currentLeftChild, LeftTuple currentRightChild, LeftTupleSink sink, boolean leftTupleMemoryEnabled)
LeftTuple	createLeftTuple(LeftTuple leftTuple, RightTuple rightTuple, LeftTupleSink sink)
protected void	doRemove(RuleRemovalContext context, ReteooBuilder builder, BaseNode node, InternalWorkingMemory[] workingMemories) Removes the node from teh network.
Declaration[]	getDeclarations()
int	getLeftInputOtnId()
LeftTupleSinkNode	getNextLeftTupleSinkNode() Returns the next node
LeftTupleSinkNode	getPreviousLeftTupleSinkNode() Returns the previous node
Rule	getRule()
GroupElement	getSubrule()
int	getSubruleIndex()
short	getType()
boolean	isInUse() Returns true in case the current node is in use (is referenced by any other node)
boolean	isLeftTupleMemoryEnabled()
void	modifyLeftTuple(LeftTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory)
void	networkUpdated(UpdateContext updateContext) 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 leftTuple, PropagationContext context, InternalWorkingMemory workingMemory)
void	setLeftInputOtnId(int leftInputOtnId)
void	setLeftTupleMemoryEnabled(boolean tupleMemoryEnabled)
void	setNextLeftTupleSinkNode(LeftTupleSinkNode next) Sets the next node
void	setPreviousLeftTupleSinkNode(LeftTupleSinkNode previous) Sets the previous node
String	toString()
void	updateNewNode(InternalWorkingMemory workingMemory, PropagationContext context)
void	writeExternal(ObjectOutput out)

Methods inherited from class org.drools.reteoo.AbstractTerminalNode

getDeclaredMask, getInferredMask, getLeftTupleSource, getNegativeMask, initDeclaredMask, initInferredMask, modifyLeftTuple, setDeclaredMask, setInferredMask, setNegativeMask, unwrapTupleSource

Methods inherited from class org.drools.common.BaseNode

addAssociation, attach, getAssociations, getId, getPartitionId, hashCode, remove, removeAssociation, setPartitionId

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drools.reteoo.LeftTupleSink

getLeftTupleSource, modifyLeftTuple

Methods inherited from interface org.drools.common.NetworkNode

getId, getPartitionId

Field Detail

type

public static final short type

See Also:

Constant Field Values

Constructor Detail

QueryTerminalNode

public QueryTerminalNode()

QueryTerminalNode

public QueryTerminalNode(int id,
                         LeftTupleSource source,
                         Rule rule,
                         GroupElement subrule,
                         int subruleIndex,
                         BuildContext context)

Constructor

Parameters:

id - node ID

source - the tuple source for this node

rule - the rule this node belongs to

subrule - the subrule this node belongs to

context - the current build context

Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class AbstractTerminalNode

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class AbstractTerminalNode

Throws:

IOException

getRule

public Rule getRule()

assertLeftTuple

public void assertLeftTuple(LeftTuple leftTuple,
                            PropagationContext context,
                            InternalWorkingMemory workingMemory)

Assert a new Tuple.

Specified by:

assertLeftTuple in interface LeftTupleSink

Parameters:

leftTuple - The Tuple being asserted.

workingMemory - The working memory seesion.

context - The PropagationContext of the WorkingMemory action

retractLeftTuple

public void retractLeftTuple(LeftTuple leftTuple,
                             PropagationContext context,
                             InternalWorkingMemory workingMemory)

Specified by:

retractLeftTuple in interface LeftTupleSink

modifyLeftTuple

public void modifyLeftTuple(LeftTuple leftTuple,
                            PropagationContext context,
                            InternalWorkingMemory workingMemory)

Specified by:

modifyLeftTuple in interface LeftTupleSink

toString

public String toString()

Overrides:

toString in class BaseNode

attach

public void attach(BuildContext context)

Description copied from class: BaseNode

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

Specified by:

attach in class BaseNode

networkUpdated

public void networkUpdated(UpdateContext updateContext)

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

Specified by:

networkUpdated in class BaseNode

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

Specified by:

doRemove in class BaseNode

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:

updateNewNode

public void updateNewNode(InternalWorkingMemory workingMemory,
                          PropagationContext context)

isLeftTupleMemoryEnabled

public boolean isLeftTupleMemoryEnabled()

Specified by:

isLeftTupleMemoryEnabled in interface LeftTupleSink

setLeftTupleMemoryEnabled

public void setLeftTupleMemoryEnabled(boolean tupleMemoryEnabled)

Specified by:

setLeftTupleMemoryEnabled in interface LeftTupleSink

getSubrule

public GroupElement getSubrule()

Returns:

the subrule

getDeclarations

public Declaration[] getDeclarations()

getSubruleIndex

public int getSubruleIndex()

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

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

getType

public short getType()

Specified by:

getType in interface LeftTupleSink

createLeftTuple

public LeftTuple createLeftTuple(InternalFactHandle factHandle,
                                 LeftTupleSink sink,
                                 boolean leftTupleMemoryEnabled)

Specified by:

createLeftTuple in interface LeftTupleSink

createLeftTuple

public LeftTuple createLeftTuple(LeftTuple leftTuple,
                                 LeftTupleSink sink,
                                 boolean leftTupleMemoryEnabled)

Specified by:

createLeftTuple in interface LeftTupleSink

createLeftTuple

public LeftTuple createLeftTuple(LeftTuple leftTuple,
                                 RightTuple rightTuple,
                                 LeftTupleSink sink)

Specified by:

createLeftTuple in interface LeftTupleSink

createLeftTuple

public LeftTuple createLeftTuple(LeftTuple leftTuple,
                                 RightTuple rightTuple,
                                 LeftTuple currentLeftChild,
                                 LeftTuple currentRightChild,
                                 LeftTupleSink sink,
                                 boolean leftTupleMemoryEnabled)

Specified by:

createLeftTuple in interface LeftTupleSink

getLeftInputOtnId

public int getLeftInputOtnId()

Specified by:

getLeftInputOtnId in interface LeftTupleSink

setLeftInputOtnId

public void setLeftInputOtnId(int leftInputOtnId)

Specified by:

setLeftInputOtnId in interface LeftTupleSink