gr.uoa.di.madgik.execution.engine

Class ExecutionHandle

java.lang.Object

gr.uoa.di.madgik.execution.engine.ExecutionHandle

All Implemented Interfaces:

Serializable, Observer

public class ExecutionHandle
extends Object
implements Observer, Serializable

The Class ExecutionHandle.

Author:

gpapanikos

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExecutionHandle.HandleState The state of the plan

Constructor Summary

Constructors

Constructor and Description
ExecutionHandle(ExecutionPlan Plan, String hostingNodeInfo) Instantiates a new execution handle.

Method Summary

Methods

Modifier and Type	Method and Description
void	AddContextHandler(NozzleHandler Handler) Adds the context handler.
void	Cancel() Cancel.
void	CleanUpStorageSystem()
void	DecreaseActionsRunning() Decrease actions running.
void	Dispose() Dispose this instance, unregisters from registered events, and disposes the context nozzles that were requested to be kept alive until the execution of the handle was completed.
void	EmitEvent(ExecutionStateEvent Event) Emit event.
void	FinalizeIsolation() Finalize isolation.
void	ForceRecheckOfPendingActions() Force re-check of pending actions.
int	GetActionsRunning() Gets the number of actions running.
ExecutionException	GetCompletionError() Gets the completion error.
ExecutionStateEvent	GetEvent(ExecutionStateEvent.EventName Event) Gets the event.
Collection<ExecutionStateEvent>	GetEvents() Gets the events.
ExecutionHandle.HandleState	GetHandleState() Gets the handle state.
String	getHostingNodeInfo()
File	GetIsolatedFile(File original) Gets the isolated file.
BoundaryIsolationInfo	GetIsolationInfo() Gets the isolation info.
ExecutionPlan	GetPlan() Gets the plan.
Object	GetSynchActionsRunning() Gets the synch actions running synchronization object
void	IncreaseActionsRunning() Increase actions running.
void	InitializeIsolation() Initialize isolation.
boolean	IsCompleted() Checks if is completed.
boolean	IsCompletedWithError() Checks if is completed with error.
boolean	IsCompletedWithSuccess() Checks if is completed with success.
boolean	IsIsolationRequested() Checks if is isolation requested.
void	Pause() Pause.
protected void	PlanCompleted() Plan completed.
protected void	PlanRunning() Plan running.
void	RegisterObserver(Observer HandleObserver) Register observer for the events the handle emits
void	Resume() Resume.
protected void	SetCompletionError(ExecutionException CompletionError) Sets the completion error.
protected void	SetIsCompleted(boolean IsCompleted) Sets the is completed.
protected void	SetIsCompletedWithError(boolean IsCompletedWithError) Sets the is completed with error.
protected void	SetIsCompletedWithSuccess(boolean IsCompletedWithSuccess) Sets the is completed with success.
void	SetIsolationInfo(BoundaryIsolationInfo IsolationInfo) Sets the isolation info.
void	update(Observable o, Object arg)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExecutionHandle

public ExecutionHandle(ExecutionPlan Plan,
               String hostingNodeInfo)

Instantiates a new execution handle.

Parameters:

Plan - the plan

Method Detail

getHostingNodeInfo

public String getHostingNodeInfo()

IncreaseActionsRunning

public void IncreaseActionsRunning()

Increase actions running.

DecreaseActionsRunning

public void DecreaseActionsRunning()

Decrease actions running.

ForceRecheckOfPendingActions

public void ForceRecheckOfPendingActions()

Force re-check of pending actions.

GetSynchActionsRunning

public Object GetSynchActionsRunning()

Gets the synch actions running synchronization object

Returns:

the object

GetActionsRunning

public int GetActionsRunning()

Gets the number of actions running.

Returns:

the number

IsCompleted

public boolean IsCompleted()

Checks if is completed.

Returns:

true, if successful

AddContextHandler

public void AddContextHandler(NozzleHandler Handler)

Adds the context handler.

Parameters:

Handler - the handler

GetIsolatedFile

public File GetIsolatedFile(File original)

Gets the isolated file.

Parameters:

original - the original

Returns:

the file

IsIsolationRequested

public boolean IsIsolationRequested()

Checks if is isolation requested.

Returns:

true, if successful

SetIsolationInfo

public void SetIsolationInfo(BoundaryIsolationInfo IsolationInfo)

Sets the isolation info.

Parameters:

IsolationInfo - the isolation info

GetIsolationInfo

public BoundaryIsolationInfo GetIsolationInfo()

Gets the isolation info.

Returns:

the boundary isolation info

InitializeIsolation

public void InitializeIsolation()
                         throws ExecutionValidationException,
                                ExecutionRunTimeException

Initialize isolation.

Throws:

ExecutionValidationException - A validation error occurred

ExecutionRunTimeException - A runtime error occurred

FinalizeIsolation

public void FinalizeIsolation()
                       throws ExecutionValidationException,
                              ExecutionRunTimeException

Finalize isolation.

Throws:

ExecutionValidationException - An execution validation error occurred

ExecutionRunTimeException - An runtime error occurred

SetIsCompleted

protected void SetIsCompleted(boolean IsCompleted)

Sets the is completed.

Parameters:

IsCompleted - the is completed

IsCompletedWithSuccess

public boolean IsCompletedWithSuccess()

Checks if is completed with success.

Returns:

true, if successful

SetIsCompletedWithSuccess

protected void SetIsCompletedWithSuccess(boolean IsCompletedWithSuccess)

Sets the is completed with success.

Parameters:

IsCompletedWithSuccess - the is completed with success

IsCompletedWithError

public boolean IsCompletedWithError()

Checks if is completed with error.

Returns:

true, if successful

SetIsCompletedWithError

protected void SetIsCompletedWithError(boolean IsCompletedWithError)

Sets the is completed with error.

Parameters:

IsCompletedWithError - the is completed with error

GetCompletionError

public ExecutionException GetCompletionError()

Gets the completion error.

Returns:

the execution exception

SetCompletionError

protected void SetCompletionError(ExecutionException CompletionError)

Sets the completion error.

Parameters:

CompletionError - the completion error

RegisterObserver

public void RegisterObserver(Observer HandleObserver)

Register observer for the events the handle emits

Parameters:

HandleObserver - the handle observer

EmitEvent

public void EmitEvent(ExecutionStateEvent Event)

Emit event.

Parameters:

Event - the event

GetEvent

public ExecutionStateEvent GetEvent(ExecutionStateEvent.EventName Event)

Gets the event.

Parameters:

Event - the event

Returns:

the execution state event

GetEvents

public Collection<ExecutionStateEvent> GetEvents()

Gets the events.

Returns:

the collection< execution state event>

GetPlan

public ExecutionPlan GetPlan()

Gets the plan.

Returns:

the execution plan

GetHandleState

public ExecutionHandle.HandleState GetHandleState()

Gets the handle state.

Returns:

the execution handle. handle state

PlanRunning

protected void PlanRunning()

Plan running.

PlanCompleted

protected void PlanCompleted()

Plan completed.

Pause

public void Pause()

Pause.

Resume

public void Resume()

Resume.

Cancel

public void Cancel()

Cancel.

update

public void update(Observable o,
          Object arg)

Specified by:

update in interface Observer

Dispose

public void Dispose()

Dispose this instance, unregisters from registered events, and disposes the context nozzles that were requested to be kept alive until the execution of the handle was completed.

CleanUpStorageSystem

public void CleanUpStorageSystem()