org.camunda.bpm.engine.impl.pvm.runtime
Class PvmExecutionImpl

java.lang.Object
  org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope
      org.camunda.bpm.engine.impl.core.instance.CoreExecution
          org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl

All Implemented Interfaces:

Serializable, BaseDelegateExecution, BpmnModelExecutionContext, DelegateExecution, ProcessEngineServicesAware, VariableScope, VariableEventDispatcher, ActivityExecution, PvmExecution, PvmProcessInstance

Direct Known Subclasses:

ExecutionEntity, ExecutionImpl

public abstract class PvmExecutionImpl
extends CoreExecution
implements ActivityExecution, PvmProcessInstance

Author:

Daniel Meyer, Roman Smirnov, Sebastian Menski

See Also:

Serialized Form

Field Summary

protected ActivityImpl	activity current activity
protected String	activityInstanceId the unique id of the current activity instance
protected int	activityInstanceState marks the current activity instance
protected String	caseInstanceId the id of a case associated with this execution
protected String	deleteReason
protected boolean	deleteRoot
protected boolean	isActive indicates if this execution represents an active path of execution.
protected boolean	isConcurrent
protected boolean	isEnded
protected boolean	isEventScope
protected boolean	isScope
protected ActivityImpl	nextActivity the activity which is to be started next
protected ProcessDefinitionImpl	processDefinition
protected ProcessInstanceStartContext	processInstanceStartContext
protected ExecutionStartContext	startContext
protected TransitionImpl	transition current sequence flow.
protected TransitionImpl	transitionBeingTaken transition that will be taken.

Fields inherited from class org.camunda.bpm.engine.impl.core.instance.CoreExecution

businessKey, eventName, eventSource, id, listenerIndex, skipCustomListeners

Fields inherited from class org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope

cachedElContext

Constructor Summary

PvmExecutionImpl()

PvmExecutionImpl(ActivityImpl initialActivity)

Method Summary

protected boolean	allExecutionsInSameActivity(List<PvmExecutionImpl> executions)
void	cancelScope(String reason)
protected void	collectActiveActivityIds(List<String> activeActivityIds)
PvmExecutionImpl	createExecution() creates a new execution.
abstract PvmExecutionImpl	createExecution(boolean initStartContext) creates a new execution.
PvmExecutionImpl	createSubProcessInstance(PvmProcessDefinition processDefinition) creates a new sub process instance.
abstract PvmExecutionImpl	createSubProcessInstance(PvmProcessDefinition processDefinition, String businessKey)
abstract PvmExecutionImpl	createSubProcessInstance(PvmProcessDefinition processDefinition, String businessKey, String caseInstanceId)
void	deleteCascade(String deleteReason)
void	deleteCascade(String deleteReason, boolean skipCustomListeners)
void	deleteCascade2(String deleteReason)
void	destroy()
void	disposeExecutionStartContext()
void	disposeProcessInstanceStartContext()
void	end(boolean completeScope) removes an execution.
void	endCompensation() Execution finished compensation.
void	enterActivityInstance() invoked to notify the execution that a new activity instance is started
void	executeActivity(PvmActivity activity) Executes the ActivityBehavior associated with the given activity.
List<String>	findActiveActivityIds()
PvmExecutionImpl	findExecution(String activityId)
List<ActivityExecution>	findInactiveConcurrentExecutions(PvmActivity activity) Retrieves all executions which are concurrent and inactive at the given activity.
void	forceUpdateActivityInstance()
protected abstract String	generateActivityInstanceId(String activityId)
ActivityImpl	getActivity() ensures initialization and returns the activity
String	getActivityId()
String	getActivityInstanceId() return the Id of the activity instance currently executed by this execution
int	getActivityInstanceState()
protected List<PvmExecutionImpl>	getAllChildExecutions()
String	getCaseInstanceId()
String	getCurrentActivityId() Gets the id of the current activity.
String	getCurrentActivityName() Gets the name of the current activity.
String	getCurrentTransitionId() return the Id of the current transition
String	getDeleteReason()
abstract List<? extends PvmExecutionImpl>	getExecutions() returns the list of execution of which this execution the parent of.
ExecutionStartContext	getExecutionStartContext()
ActivityImpl	getNextActivity() An activity which is to be started next.
abstract PvmExecutionImpl	getParent() ensures initialization and returns the parent
String	getParentActivityInstanceId() return the Id of the parent activity instance currently executed by this execution
String	getParentId() Gets the id of the parent of this execution.
AbstractVariableScope	getParentVariableScope()
String	getProcessBusinessKey() The business key for the process instance this execution is associated with.
ProcessDefinitionImpl	getProcessDefinition()
abstract PvmExecutionImpl	getProcessInstance() ensures initialization and returns the process instance.
ProcessInstanceStartContext	getProcessInstanceStartContext()
abstract PvmExecutionImpl	getReplacedBy()
protected ScopeImpl	getScopeActivity()
abstract PvmExecutionImpl	getSubProcessInstance()
abstract CmmnExecution	getSuperCaseExecution()
abstract PvmExecutionImpl	getSuperExecution()
protected String	getToStringIdentity()
TransitionImpl	getTransition()
TransitionImpl	getTransitionBeingTaken()
String	getVariableScopeKey()
protected boolean	hasConcurrentSiblings(PvmExecutionImpl concurrentRoot)
void	inactivate() Inactivates this execution.
abstract void	initialize()
boolean	isActive() returns whether this execution is currently active.
boolean	isActive(String activityId)
boolean	isCanceled() Returns whether this execution has been canceled.
boolean	isCompleteScope() Returns whether this execution completed the parent scope.
boolean	isConcurrent() returns whether this execution is concurrent or not.
boolean	isDeleteRoot()
boolean	isEnded() returns whether this execution has ended or not.
boolean	isEventScope()
boolean	isProcessInstanceExecution() returns whether this execution is a process instance or not.
boolean	isScope() Returns whether this execution is a scope.
void	leaveActivityInstance() invoked to notify the execution that an activity instance is ended.
void	remove()
protected void	removeEventScopes()
void	replace(PvmExecutionImpl execution)
void	setActive(boolean isActive) makes this execution active or inactive.
void	setActivity(PvmActivity activity)
void	setActivityInstanceId(String activityInstanceId)
void	setCanceled(boolean canceled)
void	setCaseInstanceId(String caseInstanceId)
void	setCompleteScope(boolean completeScope)
void	setConcurrent(boolean isConcurrent) changes the concurrent indicator on this execution.
void	setDeleteReason(String deleteReason)
void	setEventScope(boolean isEventScope)
abstract void	setParent(PvmExecutionImpl parent)
void	setProcessDefinition(ProcessDefinitionImpl processDefinition)
abstract void	setProcessInstance(PvmExecutionImpl pvmExecutionImpl)
void	setReplacedBy(PvmExecutionImpl replacedBy)
void	setScope(boolean isScope) Changes whether this execution is a scope or not
void	setStartContext(ExecutionStartContext startContext)
abstract void	setSubProcessInstance(PvmExecutionImpl subProcessInstance)
abstract void	setSuperCaseExecution(CmmnExecution superCaseExecution)
abstract void	setSuperExecution(PvmExecutionImpl superExecution)
void	setTransition(TransitionImpl transition)
void	setTransitionBeingTaken(TransitionImpl transitionBeingTaken)
void	signal(String signalName, Object signalData)
void	start()
void	start(Map<String,Object> variables)
void	take(PvmTransition transition) leaves the current activity by taking the given transition.
void	takeAll(List<PvmTransition> _transitions, List<? extends ActivityExecution> _recyclableExecutions) Takes the given outgoing transitions, and potentially reusing the given list of executions that were previously joined.
String	toString()

Methods inherited from class org.camunda.bpm.engine.impl.core.instance.CoreExecution

getBusinessKey, getEventName, getEventSource, getId, getListenerIndex, invokeListener, isSkipCustomListeners, performOperation, performOperationSync, setBusinessKey, setEventName, setEventSource, setId, setListenerIndex, setSkipCustomListeners

Methods inherited from class org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope

collectVariableNames, collectVariables, dispatchEvent, getCachedElContext, getSourceActivityVariableScope, getValueFromVariableInstance, getVariable, getVariable, getVariableInstance, getVariableInstanceLocal, getVariableInstancesLocal, getVariableLocal, getVariableLocal, getVariableLocalTyped, getVariableLocalTyped, getVariableNames, getVariableNamesLocal, getVariables, getVariablesLocal, getVariablesLocalTyped, getVariablesLocalTyped, getVariableStore, getVariablesTyped, getVariablesTyped, getVariableTyped, getVariableTyped, hasVariable, hasVariableLocal, hasVariables, hasVariablesLocal, removeVariable, removeVariable, removeVariableLocal, removeVariableLocal, removeVariables, removeVariables, removeVariablesLocal, removeVariablesLocal, setCachedElContext, setVariable, setVariable, setVariableLocal, setVariableLocal, setVariables, setVariablesLocal

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.camunda.bpm.engine.impl.pvm.delegate.ActivityExecution

interruptScope

Methods inherited from interface org.camunda.bpm.engine.delegate.DelegateExecution

getProcessDefinitionId, getProcessInstanceId

Methods inherited from interface org.camunda.bpm.engine.delegate.BaseDelegateExecution

getBusinessKey, getEventName, getId

Methods inherited from interface org.camunda.bpm.engine.delegate.VariableScope

getVariable, getVariableLocal, getVariableLocalTyped, getVariableLocalTyped, getVariableNames, getVariableNamesLocal, getVariables, getVariablesLocal, getVariablesLocalTyped, getVariablesLocalTyped, getVariablesTyped, getVariablesTyped, getVariableTyped, getVariableTyped, hasVariable, hasVariableLocal, hasVariables, hasVariablesLocal, removeVariable, removeVariableLocal, removeVariables, removeVariables, removeVariablesLocal, removeVariablesLocal, setVariable, setVariableLocal, setVariables, setVariablesLocal

Methods inherited from interface org.camunda.bpm.engine.delegate.BpmnModelExecutionContext

getBpmnModelElementInstance, getBpmnModelInstance

Methods inherited from interface org.camunda.bpm.engine.delegate.ProcessEngineServicesAware

getProcessEngineServices

Methods inherited from interface org.camunda.bpm.engine.impl.pvm.PvmExecution

getVariable, getVariables, hasVariable, setVariable

Field Detail

processDefinition

protected transient ProcessDefinitionImpl processDefinition

startContext

protected transient ExecutionStartContext startContext

processInstanceStartContext

protected transient ProcessInstanceStartContext processInstanceStartContext

activity

protected transient ActivityImpl activity

current activity

nextActivity

protected transient ActivityImpl nextActivity

the activity which is to be started next

transition

protected transient TransitionImpl transition

current sequence flow. is null when there is no transition being taken.

transitionBeingTaken

protected transient TransitionImpl transitionBeingTaken

transition that will be taken. is null when there is no transition being taken.

activityInstanceId

protected String activityInstanceId

the unique id of the current activity instance

caseInstanceId

protected String caseInstanceId

the id of a case associated with this execution

deleteRoot

protected boolean deleteRoot

deleteReason

protected String deleteReason

isActive

protected boolean isActive

indicates if this execution represents an active path of execution. Executions are made inactive in the following situations:

• an execution enters a nested scope
• an execution is split up into multiple concurrent executions, then the parent is made inactive.
• an execution has arrived in a parallel gateway or join and that join has not yet activated/fired.
• an execution is ended.

isScope

protected boolean isScope

isConcurrent

protected boolean isConcurrent

isEnded

protected boolean isEnded

isEventScope

protected boolean isEventScope

activityInstanceState

protected int activityInstanceState

marks the current activity instance

Constructor Detail

PvmExecutionImpl

public PvmExecutionImpl()

PvmExecutionImpl

public PvmExecutionImpl(ActivityImpl initialActivity)

Method Detail

createExecution

public PvmExecutionImpl createExecution()

creates a new execution. properties processDefinition, processInstance and activity will be initialized.

Specified by:

createExecution in interface ActivityExecution

createExecution

public abstract PvmExecutionImpl createExecution(boolean initStartContext)

Description copied from interface: ActivityExecution

creates a new execution. This execution will be the parent of the newly created execution. properties processDefinition, processInstance and activity will be initialized.

Specified by:

createExecution in interface ActivityExecution

createSubProcessInstance

public PvmExecutionImpl createSubProcessInstance(PvmProcessDefinition processDefinition)

Description copied from interface: ActivityExecution

creates a new sub process instance. The current execution will be the super execution of the created execution.

Specified by:

createSubProcessInstance in interface ActivityExecution

Parameters:

processDefinition - The PvmProcessDefinition of the subprocess.

createSubProcessInstance

public abstract PvmExecutionImpl createSubProcessInstance(PvmProcessDefinition processDefinition,
                                                          String businessKey)

Specified by:

createSubProcessInstance in interface ActivityExecution

Parameters:

processDefinition - The PvmProcessDefinition of the subprocess.

businessKey - the business key of the process instance

See Also:

ActivityExecution.createSubProcessInstance(PvmProcessDefinition)

createSubProcessInstance

public abstract PvmExecutionImpl createSubProcessInstance(PvmProcessDefinition processDefinition,
                                                          String businessKey,
                                                          String caseInstanceId)

Specified by:

createSubProcessInstance in interface ActivityExecution

Parameters:

processDefinition - The PvmProcessDefinition of the subprocess.

businessKey - the business key of the process instance

caseInstanceId - the case instance id of the process instance

See Also:

ActivityExecution.createSubProcessInstance(PvmProcessDefinition)

initialize

public abstract void initialize()

start

public void start()

Specified by:

start in interface PvmProcessInstance

start

public void start(Map<String,Object> variables)

Specified by:

start in interface PvmProcessInstance

destroy

public void destroy()

removeEventScopes

protected void removeEventScopes()

cancelScope

public void cancelScope(String reason)

Specified by:

cancelScope in interface ActivityExecution

end

public void end(boolean completeScope)

removes an execution. if there are nested executions, those will be ended recursively. if there is a parent, this method removes the bidirectional relation between parent and this execution.

Specified by:

end in interface ActivityExecution

Parameters:

completeScope - true if ending the execution contributes to completing the BPMN 2.0 scope

endCompensation

public void endCompensation()

Description copied from interface: ActivityExecution

Execution finished compensation. Removes this execution and notifies listeners.

Specified by:

endCompensation in interface ActivityExecution

remove

public void remove()

Specified by:

remove in interface ActivityExecution

deleteCascade

public void deleteCascade(String deleteReason)

Specified by:

deleteCascade in interface PvmProcessInstance

deleteCascade

public void deleteCascade(String deleteReason,
                          boolean skipCustomListeners)

deleteCascade2

public void deleteCascade2(String deleteReason)

getReplacedBy

public abstract PvmExecutionImpl getReplacedBy()

setReplacedBy

public void setReplacedBy(PvmExecutionImpl replacedBy)

replace

public void replace(PvmExecutionImpl execution)

signal

public void signal(String signalName,
                   Object signalData)

Specified by:

signal in interface ActivityExecution

Specified by:

signal in interface PvmExecution

take

public void take(PvmTransition transition)

Description copied from interface: ActivityExecution

leaves the current activity by taking the given transition.

Specified by:

take in interface ActivityExecution

executeActivity

public void executeActivity(PvmActivity activity)

Description copied from interface: ActivityExecution

Executes the ActivityBehavior associated with the given activity.

Specified by:

executeActivity in interface ActivityExecution

findInactiveConcurrentExecutions

public List<ActivityExecution> findInactiveConcurrentExecutions(PvmActivity activity)

Description copied from interface: ActivityExecution

Retrieves all executions which are concurrent and inactive at the given activity.

Specified by:

findInactiveConcurrentExecutions in interface ActivityExecution

getAllChildExecutions

protected List<PvmExecutionImpl> getAllChildExecutions()

takeAll

public void takeAll(List<PvmTransition> _transitions,
                    List<? extends ActivityExecution> _recyclableExecutions)

Description copied from interface: ActivityExecution

Takes the given outgoing transitions, and potentially reusing the given list of executions that were previously joined.

Specified by:

takeAll in interface ActivityExecution

hasConcurrentSiblings

protected boolean hasConcurrentSiblings(PvmExecutionImpl concurrentRoot)

allExecutionsInSameActivity

protected boolean allExecutionsInSameActivity(List<PvmExecutionImpl> executions)

isActive

public boolean isActive(String activityId)

inactivate

public void inactivate()

Description copied from interface: ActivityExecution

Inactivates this execution. This is useful for example in a join: the execution still exists, but it is not longer active.

Specified by:

inactivate in interface ActivityExecution

getExecutions

public abstract List<? extends PvmExecutionImpl> getExecutions()

Description copied from interface: ActivityExecution

returns the list of execution of which this execution the parent of.

Specified by:

getExecutions in interface ActivityExecution

findExecution

public PvmExecutionImpl findExecution(String activityId)

Specified by:

findExecution in interface PvmProcessInstance

findActiveActivityIds

public List<String> findActiveActivityIds()

Specified by:

findActiveActivityIds in interface PvmProcessInstance

collectActiveActivityIds

protected void collectActiveActivityIds(List<String> activeActivityIds)

getProcessBusinessKey

public String getProcessBusinessKey()

Description copied from interface: DelegateExecution

The business key for the process instance this execution is associated with.

Specified by:

getProcessBusinessKey in interface DelegateExecution

setProcessDefinition

public void setProcessDefinition(ProcessDefinitionImpl processDefinition)

getProcessDefinition

public ProcessDefinitionImpl getProcessDefinition()

getProcessInstance

public abstract PvmExecutionImpl getProcessInstance()

ensures initialization and returns the process instance.

setProcessInstance

public abstract void setProcessInstance(PvmExecutionImpl pvmExecutionImpl)

getCaseInstanceId

public String getCaseInstanceId()

setCaseInstanceId

public void setCaseInstanceId(String caseInstanceId)

getActivity

public ActivityImpl getActivity()

ensures initialization and returns the activity

Specified by:

getActivity in interface ActivityExecution

Specified by:

getActivity in interface PvmExecution

getActivityId

public String getActivityId()

getCurrentActivityName

public String getCurrentActivityName()

Description copied from interface: DelegateExecution

Gets the name of the current activity.

Specified by:

getCurrentActivityName in interface DelegateExecution

getCurrentActivityId

public String getCurrentActivityId()

Description copied from interface: DelegateExecution

Gets the id of the current activity.

Specified by:

getCurrentActivityId in interface DelegateExecution

setActivity

public void setActivity(PvmActivity activity)

Specified by:

setActivity in interface ActivityExecution

enterActivityInstance

public void enterActivityInstance()

Description copied from interface: ActivityExecution

invoked to notify the execution that a new activity instance is started

Specified by:

enterActivityInstance in interface ActivityExecution

generateActivityInstanceId

protected abstract String generateActivityInstanceId(String activityId)

leaveActivityInstance

public void leaveActivityInstance()

Description copied from interface: ActivityExecution

invoked to notify the execution that an activity instance is ended.

Specified by:

leaveActivityInstance in interface ActivityExecution

getParentActivityInstanceId

public String getParentActivityInstanceId()

Description copied from interface: ActivityExecution

return the Id of the parent activity instance currently executed by this execution

Specified by:

getParentActivityInstanceId in interface DelegateExecution

Specified by:

getParentActivityInstanceId in interface ActivityExecution

forceUpdateActivityInstance

public void forceUpdateActivityInstance()

setActivityInstanceId

public void setActivityInstanceId(String activityInstanceId)

Specified by:

setActivityInstanceId in interface ActivityExecution

getActivityInstanceId

public String getActivityInstanceId()

Description copied from interface: ActivityExecution

return the Id of the activity instance currently executed by this execution

Specified by:

getActivityInstanceId in interface DelegateExecution

Specified by:

getActivityInstanceId in interface ActivityExecution

getParent

public abstract PvmExecutionImpl getParent()

ensures initialization and returns the parent

Specified by:

getParent in interface ActivityExecution

getParentId

public String getParentId()

Description copied from interface: DelegateExecution

Gets the id of the parent of this execution. If null, the execution represents a process-instance.

Specified by:

getParentId in interface DelegateExecution

setParent

public abstract void setParent(PvmExecutionImpl parent)

getSuperExecution

public abstract PvmExecutionImpl getSuperExecution()

setSuperExecution

public abstract void setSuperExecution(PvmExecutionImpl superExecution)

getSubProcessInstance

public abstract PvmExecutionImpl getSubProcessInstance()

setSubProcessInstance

public abstract void setSubProcessInstance(PvmExecutionImpl subProcessInstance)

getSuperCaseExecution

public abstract CmmnExecution getSuperCaseExecution()

setSuperCaseExecution

public abstract void setSuperCaseExecution(CmmnExecution superCaseExecution)

getScopeActivity

protected ScopeImpl getScopeActivity()

isScope

public boolean isScope()

Description copied from interface: ActivityExecution

Returns whether this execution is a scope.

Specified by:

isScope in interface ActivityExecution

setScope

public void setScope(boolean isScope)

Description copied from interface: ActivityExecution

Changes whether this execution is a scope or not

Specified by:

setScope in interface ActivityExecution

toString

public String toString()

Overrides:

toString in class Object

getToStringIdentity

protected String getToStringIdentity()

getVariableScopeKey

public String getVariableScopeKey()

Specified by:

getVariableScopeKey in interface VariableScope

Overrides:

getVariableScopeKey in class AbstractVariableScope

getParentVariableScope

public AbstractVariableScope getParentVariableScope()

Specified by:

getParentVariableScope in class AbstractVariableScope

getDeleteReason

public String getDeleteReason()

setDeleteReason

public void setDeleteReason(String deleteReason)

isDeleteRoot

public boolean isDeleteRoot()

getTransition

public TransitionImpl getTransition()

getCurrentTransitionId

public String getCurrentTransitionId()

Description copied from interface: DelegateExecution

return the Id of the current transition

Specified by:

getCurrentTransitionId in interface DelegateExecution

getTransitionBeingTaken

public TransitionImpl getTransitionBeingTaken()

setTransition

public void setTransition(TransitionImpl transition)

setTransitionBeingTaken

public void setTransitionBeingTaken(TransitionImpl transitionBeingTaken)

isConcurrent

public boolean isConcurrent()

Description copied from interface: ActivityExecution

returns whether this execution is concurrent or not.

Specified by:

isConcurrent in interface ActivityExecution

setConcurrent

public void setConcurrent(boolean isConcurrent)

Description copied from interface: ActivityExecution

changes the concurrent indicator on this execution.

Specified by:

setConcurrent in interface ActivityExecution

isActive

public boolean isActive()

Description copied from interface: ActivityExecution

returns whether this execution is currently active.

Specified by:

isActive in interface ActivityExecution

setActive

public void setActive(boolean isActive)

Description copied from interface: ActivityExecution

makes this execution active or inactive.

Specified by:

setActive in interface ActivityExecution

isEnded

public boolean isEnded()

Description copied from interface: ActivityExecution

returns whether this execution has ended or not.

Specified by:

isEnded in interface ActivityExecution

Specified by:

isEnded in interface PvmProcessInstance

isCanceled

public boolean isCanceled()

Description copied from interface: ActivityExecution

Returns whether this execution has been canceled.

Specified by:

isCanceled in interface ActivityExecution

setCanceled

public void setCanceled(boolean canceled)

isCompleteScope

public boolean isCompleteScope()

Description copied from interface: ActivityExecution

Returns whether this execution completed the parent scope.

Specified by:

isCompleteScope in interface ActivityExecution

setCompleteScope

public void setCompleteScope(boolean completeScope)

getActivityInstanceState

public int getActivityInstanceState()

isEventScope

public boolean isEventScope()

setEventScope

public void setEventScope(boolean isEventScope)

getExecutionStartContext

public ExecutionStartContext getExecutionStartContext()

disposeProcessInstanceStartContext

public void disposeProcessInstanceStartContext()

disposeExecutionStartContext

public void disposeExecutionStartContext()

getNextActivity

public ActivityImpl getNextActivity()

Description copied from interface: ActivityExecution

An activity which is to be started next.

Specified by:

getNextActivity in interface ActivityExecution

isProcessInstanceExecution

public boolean isProcessInstanceExecution()

Description copied from interface: ActivityExecution

returns whether this execution is a process instance or not.

Specified by:

isProcessInstanceExecution in interface ActivityExecution

getProcessInstanceStartContext

public ProcessInstanceStartContext getProcessInstanceStartContext()

setStartContext

public void setStartContext(ExecutionStartContext startContext)