Package org.drools.core.reteoo

Class QueryElementNode

java.lang.Object

org.drools.core.common.BaseNode

org.drools.core.reteoo.LeftTupleSource

org.drools.core.reteoo.QueryElementNode

All Implemented Interfaces:

Serializable, NetworkNode, MemoryFactory<QueryElementNode.QueryElementNodeMemory>, LeftTupleNode, LeftTupleSink, LeftTupleSinkNode, Sink

public class QueryElementNode
extends LeftTupleSource
implements LeftTupleSinkNode, MemoryFactory<QueryElementNode.QueryElementNodeMemory>

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	QueryElementNode.QueryElementNodeMemory
static class	QueryElementNode.UnificationNodeViewChangedEventListener

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	openQuery
protected QueryElement	queryElement

Fields inherited from class org.drools.core.reteoo.LeftTupleSource

leftDeclaredMask, leftInferredMask, leftInput, leftNegativeMask, sink

Fields inherited from class org.drools.core.common.BaseNode

associations, hashcode, id, memoryId, partitionId

Constructor Summary

Constructors

Constructor	Description
QueryElementNode()
QueryElementNode(int id, LeftTupleSource tupleSource, QueryElement queryElement, boolean tupleMemoryEnabled, boolean openQuery, BuildContext context)

Method Summary

Modifier and Type	Method	Description
protected QueryElementNode.UnificationNodeViewChangedEventListener	createCollector(TupleImpl leftTuple, int[] varIndexes, boolean tupleMemoryEnabled)
DroolsQueryImpl	createDroolsQuery(TupleImpl leftTuple, InternalFactHandle handle, StackEntry stackEntry, List<PathMemory> pmems, QueryElementNode.QueryElementNodeMemory qmem, LeftTupleSink sink, ReteEvaluator reteEvaluator)
InternalFactHandle	createFactHandle(PropagationContext context, ReteEvaluator reteEvaluator, TupleImpl leftTuple)
QueryElementNode.QueryElementNodeMemory	createMemory(RuleBaseConfiguration config, ReteEvaluator reteEvaluator)
void	doAttach(BuildContext context)
protected boolean	doRemove(RuleRemovalContext context, ReteooBuilder builder)	Removes the node from the network.
boolean	equals(Object object)
Object[]	getActualArguments(TupleImpl leftTuple, ReteEvaluator reteEvaluator)
LeftTupleSinkNode	getNextLeftTupleSinkNode()	Returns the next node
ObjectTypeNode	getObjectTypeNode()
LeftTupleSinkNode	getPreviousLeftTupleSinkNode()	Returns the previous node
QueryElement	getQueryElement()
int	getType()
boolean	isLeftTupleMemoryEnabled()
boolean	isOpenQuery()
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 opportunity for state update
void	setNextLeftTupleSinkNode(LeftTupleSinkNode next)	Sets the next node
void	setPreviousLeftTupleSinkNode(LeftTupleSinkNode previous)	Sets the previous node
String	toString()

Methods inherited from class org.drools.core.reteoo.LeftTupleSource

addTupleSink, addTupleSink, addTupleSink, getFirstLeftTupleSinkIgnoreRemoving, getLeftDeclaredMask, getLeftInferredMask, getLeftInputOtnId, getLeftInputPattern, getLeftNegativeMask, getLeftTupleSource, getObjectCount, getObjectType, getObjectTypeForPropertyReactivity, getPathIndex, getSinkPropagator, initDeclaredMask, initInferredMask, initMasks, isInUse, removeTupleSink, setLeftInferredMask, setLeftInputOtnId, setLeftListenedProperties, setLeftTupleSource, setNodeConstraintsPropertyReactiveMask, setObjectCount, setPartitionIdWithSinks, setSourcePartitionId, setSourcePartitionId

Methods inherited from class org.drools.core.common.BaseNode

addAssociatedTerminal, addAssociation, addAssociation, attach, getAssociatedRules, getAssociatedTerminalsSize, getAssociationsSize, getId, getMemoryId, getPartitionId, getSinks, hasAssociatedTerminal, hashCode, initMemoryId, isAssociatedWith, isStreamMode, remove, removeAssociatedTerminal, removeAssociation, setId, setPartitionId, setStreamMode

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drools.core.reteoo.LeftTupleNode

getLeftTupleSource, getObjectCount, getPathIndex, getSinkPropagator, setObjectCount

Methods inherited from interface org.drools.core.reteoo.LeftTupleSink

getLeftInferredMask, getLeftInputOtnId, setLeftInputOtnId, setPartitionIdWithSinks

Methods inherited from interface org.drools.core.common.MemoryFactory

getMemoryId

Methods inherited from interface org.drools.base.common.NetworkNode

addAssociatedTerminal, getAssociatedRules, getAssociatedTerminalsSize, getId, getPartitionId, getSinks, hasAssociatedTerminal, isAssociatedWith, isRightInputIsRiaNode, removeAssociatedTerminal

Field Details

queryElement

protected QueryElement queryElement

openQuery

protected boolean openQuery

Constructor Details

QueryElementNode

public QueryElementNode()

QueryElementNode

public QueryElementNode(int id,
 LeftTupleSource tupleSource,
 QueryElement queryElement,
 boolean tupleMemoryEnabled,
 boolean openQuery,
 BuildContext context)

Method Details

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 opportunity for state update

Specified by:

networkUpdated in class BaseNode

getType

public int getType()

Specified by:

getType in interface NetworkNode

Specified by:

getType in class LeftTupleSource

isLeftTupleMemoryEnabled

public boolean isLeftTupleMemoryEnabled()

Specified by:

isLeftTupleMemoryEnabled in interface LeftTupleSink

Specified by:

isLeftTupleMemoryEnabled in class LeftTupleSource

getQueryElement

public QueryElement getQueryElement()

isOpenQuery

public boolean isOpenQuery()

createFactHandle

public InternalFactHandle createFactHandle(PropagationContext context,
 ReteEvaluator reteEvaluator,
 TupleImpl leftTuple)

createDroolsQuery

public DroolsQueryImpl createDroolsQuery(TupleImpl leftTuple,
 InternalFactHandle handle,
 StackEntry stackEntry,
 List<PathMemory> pmems,
 QueryElementNode.QueryElementNodeMemory qmem,
 LeftTupleSink sink,
 ReteEvaluator reteEvaluator)

getActualArguments

public Object[] getActualArguments(TupleImpl leftTuple,
 ReteEvaluator reteEvaluator)

createCollector

protected QueryElementNode.UnificationNodeViewChangedEventListener createCollector(TupleImpl leftTuple,
 int[] varIndexes,
 boolean tupleMemoryEnabled)

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

equals

public boolean equals(Object object)

Overrides:

equals in class Object

createMemory

public QueryElementNode.QueryElementNodeMemory createMemory(RuleBaseConfiguration config,
 ReteEvaluator reteEvaluator)

Specified by:

createMemory in interface MemoryFactory<QueryElementNode.QueryElementNodeMemory>

getObjectTypeNode

public ObjectTypeNode getObjectTypeNode()

Specified by:

getObjectTypeNode in class BaseNode

toString

public String toString()

Overrides:

toString in class BaseNode

doAttach

public void doAttach(BuildContext context)

Overrides:

doAttach in class BaseNode

doRemove

protected boolean doRemove(RuleRemovalContext context,
 ReteooBuilder builder)

Description copied from class: BaseNode

Removes the node from the network. Usually from the parent ObjectSource or TupleSource

Specified by:

doRemove in class BaseNode