org.drools.common
Class AgendaItem

java.lang.Object
  org.drools.common.AgendaItem

All Implemented Interfaces:

Externalizable, Serializable, Queueable, org.drools.runtime.rule.Activation

Direct Known Subclasses:

ScheduledAgendaItem

public class AgendaItem
extends Object
implements Activation, Queueable, Externalizable

Item entry in the Agenda.

See Also:

Serialized Form

Constructor Summary

AgendaItem()

AgendaItem(long activationNumber, LeftTuple tuple, int salience, PropagationContext context, RuleTerminalNode rtn)
Construct.

Method Summary

void	addBlocked(LinkedListNode node)
void	addLogicalDependency(LogicalDependency node)
void	cancel()
void	dequeue()
void	enqueued(int index)
boolean	equals(Object object)
ActivationGroupNode	getActivationGroupNode()
ActivationNode	getActivationNode()
long	getActivationNumber() Each PropgationContext is assigned an id from a counter for the WorkingMemory action it represents.
AgendaGroup	getAgendaGroup()
LinkedList	getBlocked()
LinkedList	getBlockers()
List<String>	getDeclarationIDs()
Object	getDeclarationValue(String variableName)
InternalFactHandle	getFactHandle()
List<FactHandle>	getFactHandles()
int	getIndex()
LinkedList	getLogicalDependencies()
List<Object>	getObjects()
PropagationContext	getPropagationContext() Retrieve the PropagationContext for the Activation
Rule	getRule() Retrieve the rule.
RuleTerminalNode	getRuleTerminalNode()
int	getSalience()
int	getSequenence()
GroupElement	getSubRule() Retrieve the subrule that was activated.
LeftTuple	getTuple() Retrieve the tuple.
int	hashCode() Return the hashCode of the TupleKey as the hashCode of the AgendaItem
boolean	isActivated()
boolean	isActive()
boolean	isCanceled()
boolean	isMatched()
void	readExternal(ObjectInput in)
void	remove() Cancel the Activation by removing it from the Agenda.
void	removeAllBlockersAndBlocked(DefaultAgenda agenda)
void	removeBlocked(LinkedListNode node)
void	setActivated(boolean activated)
void	setActivationGroupNode(ActivationGroupNode activationNode)
void	setActivationNode(ActivationNode activationNode)
void	setAgendaGroup(InternalAgendaGroup agendaGroup)
void	setBlocked(LinkedList justified)
void	setFactHandle(InternalFactHandle factHandle)
void	setLogicalDependencies(LinkedList justified)
void	setMatched(boolean matched)
void	setPropagationContext(PropagationContext context)
void	setSalience(int salience)
void	setSequenence(int sequenence)
String	toExternalForm()
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

AgendaItem

public AgendaItem()

AgendaItem

public AgendaItem(long activationNumber,
                  LeftTuple tuple,
                  int salience,
                  PropagationContext context,
                  RuleTerminalNode rtn)

Construct.

Parameters:

tuple - The tuple.

rule - The rule.

Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

getPropagationContext

public PropagationContext getPropagationContext()

Description copied from interface: Activation

Retrieve the PropagationContext for the Activation

Specified by:

getPropagationContext in interface org.drools.runtime.rule.Activation

Returns:

The propagation context

setPropagationContext

public void setPropagationContext(PropagationContext context)

getRule

public Rule getRule()

Retrieve the rule.

Specified by:

getRule in interface org.drools.runtime.rule.Activation

Returns:

The rule.

getTuple

public LeftTuple getTuple()

Retrieve the tuple.

Returns:

The tuple.

getSalience

public int getSalience()

setSalience

public void setSalience(int salience)

getSequenence

public int getSequenence()

setSequenence

public void setSequenence(int sequenence)

getFactHandle

public InternalFactHandle getFactHandle()

setFactHandle

public void setFactHandle(InternalFactHandle factHandle)

getActivationNumber

public long getActivationNumber()

Description copied from interface: Activation

Each PropgationContext is assigned an id from a counter for the WorkingMemory action it represents. All Activations return this id as the ActivationNumber, thus all Activations created from the same PropgationContext will return the same long for this method.

Returns:

The activation number

addBlocked

public void addBlocked(LinkedListNode node)

removeAllBlockersAndBlocked

public void removeAllBlockersAndBlocked(DefaultAgenda agenda)

removeBlocked

public void removeBlocked(LinkedListNode node)

setBlocked

public void setBlocked(LinkedList justified)

getBlocked

public LinkedList getBlocked()

getBlockers

public LinkedList getBlockers()

addLogicalDependency

public void addLogicalDependency(LogicalDependency node)

getLogicalDependencies

public LinkedList getLogicalDependencies()

setLogicalDependencies

public void setLogicalDependencies(LinkedList justified)

isActivated

public boolean isActivated()

setActivated

public void setActivated(boolean activated)

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object object)

Overrides:

equals in class Object

hashCode

public int hashCode()

Return the hashCode of the TupleKey as the hashCode of the AgendaItem

Overrides:

hashCode in class Object

Returns:

enqueued

public void enqueued(int index)

Specified by:

enqueued in interface Queueable

dequeue

public void dequeue()

Specified by:

dequeue in interface Queueable

getIndex

public int getIndex()

remove

public void remove()

Description copied from interface: Activation

Cancel the Activation by removing it from the Agenda.

getActivationGroupNode

public ActivationGroupNode getActivationGroupNode()

setActivationGroupNode

public void setActivationGroupNode(ActivationGroupNode activationNode)

getAgendaGroup

public AgendaGroup getAgendaGroup()

setAgendaGroup

public void setAgendaGroup(InternalAgendaGroup agendaGroup)

getActivationNode

public ActivationNode getActivationNode()

setActivationNode

public void setActivationNode(ActivationNode activationNode)

getSubRule

public GroupElement getSubRule()

Description copied from interface: Activation

Retrieve the subrule that was activated.

Returns:

getRuleTerminalNode

public RuleTerminalNode getRuleTerminalNode()

getFactHandles

public List<FactHandle> getFactHandles()

Specified by:

getFactHandles in interface org.drools.runtime.rule.Activation

toExternalForm

public String toExternalForm()

getObjects

public List<Object> getObjects()

Specified by:

getObjects in interface org.drools.runtime.rule.Activation

getDeclarationValue

public Object getDeclarationValue(String variableName)

Specified by:

getDeclarationValue in interface org.drools.runtime.rule.Activation

getDeclarationIDs

public List<String> getDeclarationIDs()

Specified by:

getDeclarationIDs in interface org.drools.runtime.rule.Activation

isActive

public boolean isActive()

Specified by:

isActive in interface org.drools.runtime.rule.Activation

isCanceled

public boolean isCanceled()

cancel

public void cancel()

isMatched

public boolean isMatched()

setMatched

public void setMatched(boolean matched)