gr.uoa.di.madgik.execution.plan.element
Class TryCatchFinallyPlanElement

java.lang.Object
  gr.uoa.di.madgik.execution.plan.element.PlanElementBase
      gr.uoa.di.madgik.execution.plan.element.TryCatchFinallyPlanElement

All Implemented Interfaces:

IPlanElement, Observer

public class TryCatchFinallyPlanElement
extends PlanElementBase

This class acts as a try TryFlow / catch (CatchFlows) / finally (FinallyFlow) block of execution. During execution the subplan that is declared in the TryFlow is executed. In case an exception is caught, the CatchElements in the CatchFlows are iterated to match the exception caught with one of the handled ones. If some CatchElement can handle the exception, the subplan defined in it is executed. If the CatchElement does not define that the exception is re-thrown after the execution of the compensation code, the execution is moved to the FinallyFlow subplan. If however the exception is to be re-thrown or a new exception is thrown from the compensation code, the exception is bubbled up after the FinallyFlow subplan is executed.

Author:

gpapanikos

Nested Class Summary

Nested classes/interfaces inherited from class gr.uoa.di.madgik.execution.plan.element.PlanElementBase

PlanElementBase.ClockType

Nested classes/interfaces inherited from interface gr.uoa.di.madgik.execution.plan.element.IPlanElement

IPlanElement.PlanElementType

Field Summary

List<CatchElement>	CatchFlows The Catch flows.
IPlanElement	FinallyFlow The Finally flow.
IPlanElement	TryFlow The Try flow.

Constructor Summary

TryCatchFinallyPlanElement()

Method Summary

void	ExecuteExtender(ExecutionHandle Handle) Execute extender.
void	FromXML(Element XML) Populate the element from its xml serialization as returned by IPlanElement.ToXML()
void	FromXML(String XML) Populate the element from its xml serialization as returned by IPlanElement.ToXML()
List<ContingencyTrigger>	GetContingencyTriggers() Gets the contingency triggers.
org.slf4j.Logger	GetExtenderLogger() Gets the extender logger.
String	GetID() Gets the id.
Set<String>	GetModifiedVariableNames() Gets the modified variable names of the element and of the elements contained.
String	GetName() Gets the name.
Set<String>	GetNeededVariableNames() Gets the needed variable names of the element and of the elements contained.
IPlanElement.PlanElementType	GetPlanElementType() Gets the plan element type.
IPlanElement	Locate(String ID) Locate the plan element with the provided id.
Set<IPlanElement>	LocateActionElements() Retrieves the Action elements under this elements
void	SetContingencyResourcePick(ExecutionHandle Handle, String Pick) Sets the picked resource in case the IContingencyReaction.ReactionType#Pick reaction is supported
void	SetName(String Name) Sets the name.
IContingencyReaction.ReactionType[]	SupportedContingencyTriggers() Retrieves the supported contingency triggers.
boolean	SupportsContingencyTriggers() Checks if the element supports contingency triggers.
String	ToXML() Serialize to xml the element and all its contained elements
void	Validate() Validate the element and any sub element it contains
void	ValidatePreExecution(ExecutionHandle Handle) Validate the element and any sub element it contains before it is executed

Methods inherited from class gr.uoa.di.madgik.execution.plan.element.PlanElementBase

CheckStatus, Execute, ExecuteWithStateAwareness, GetPerformanceEvent, RegisterToRunningActionElementsRestriction, ResetClocks, StartClock, StopClock, UnregisterToRunningActionElementsRestriction, update

Methods inherited from class java.lang.Object

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

Field Detail

TryFlow

public IPlanElement TryFlow

The Try flow.

CatchFlows

public List<CatchElement> CatchFlows

The Catch flows.

FinallyFlow

public IPlanElement FinallyFlow

The Finally flow.

Constructor Detail

TryCatchFinallyPlanElement

public TryCatchFinallyPlanElement()

Method Detail

FromXML

public void FromXML(String XML)
             throws ExecutionSerializationException

Description copied from interface: IPlanElement

Populate the element from its xml serialization as returned by IPlanElement.ToXML()

Parameters:

XML - the xML serialization

Throws:

ExecutionSerializationException - A serialization error occurred

FromXML

public void FromXML(Element XML)
             throws ExecutionSerializationException

Description copied from interface: IPlanElement

Populate the element from its xml serialization as returned by IPlanElement.ToXML()

Parameters:

XML - the xML serialization

Throws:

ExecutionSerializationException - A serialization error occurred

GetID

public String GetID()

Description copied from interface: IPlanElement

Gets the id.

Returns:

the id of the element

GetName

public String GetName()

Description copied from interface: IPlanElement

Gets the name.

Returns:

the name

GetPlanElementType

public IPlanElement.PlanElementType GetPlanElementType()

Description copied from interface: IPlanElement

Gets the plan element type.

Returns:

the plan element type

Locate

public IPlanElement Locate(String ID)

Description copied from interface: IPlanElement

Locate the plan element with the provided id. If this is the element requested return this instance. Otherwise forward the request to any sub elements contained. If the element does not belong to the hierarchy under this element, return null

Parameters:

ID - the iD

Returns:

the plan element with the provided id. or null if not found

LocateActionElements

public Set<IPlanElement> LocateActionElements()

Description copied from interface: IPlanElement

Retrieves the Action elements under this elements

Returns:

The action ELements

SetName

public void SetName(String Name)

Description copied from interface: IPlanElement

Sets the name.

Parameters:

Name - the name

ToXML

public String ToXML()
             throws ExecutionSerializationException

Description copied from interface: IPlanElement

Serialize to xml the element and all its contained elements

Returns:

the serialization

Throws:

ExecutionSerializationException - A serialization error occurred

Validate

public void Validate()
              throws ExecutionValidationException

Description copied from interface: IPlanElement

Validate the element and any sub element it contains

Throws:

ExecutionValidationException - A validation error occurred

SupportedContingencyTriggers

public IContingencyReaction.ReactionType[] SupportedContingencyTriggers()

Description copied from interface: IPlanElement

Retrieves the supported contingency triggers.

Returns:

the supported contingency triggers types.

SupportsContingencyTriggers

public boolean SupportsContingencyTriggers()

Description copied from interface: IPlanElement

Checks if the element supports contingency triggers.

Returns:

true, if it does

GetContingencyTriggers

public List<ContingencyTrigger> GetContingencyTriggers()

Description copied from interface: IPlanElement

Gets the contingency triggers.

Returns:

the list of contingency trigger that are applicable to the element.

SetContingencyResourcePick

public void SetContingencyResourcePick(ExecutionHandle Handle,
                                       String Pick)
                                throws ExecutionRunTimeException

Description copied from interface: IPlanElement

Sets the picked resource in case the IContingencyReaction.ReactionType#Pick reaction is supported

Parameters:

Handle - the execution handle handle

Pick - the picked resource

Throws:

ExecutionRunTimeException - A runtime error occurred

GetModifiedVariableNames

public Set<String> GetModifiedVariableNames()

Description copied from interface: IPlanElement

Gets the modified variable names of the element and of the elements contained. These include the variables that are modified by the element and its hierarchy when executed.

Returns:

the set of the variable names that are modified by this element and its contained elements

GetNeededVariableNames

public Set<String> GetNeededVariableNames()

Description copied from interface: IPlanElement

Gets the needed variable names of the element and of the elements contained. These include the variables that are needed to be present for the element and its hierarchy to be executed.

Returns:

the set of the variable names that are needed by this element and its contained elements

GetExtenderLogger

public org.slf4j.Logger GetExtenderLogger()

Description copied from class: PlanElementBase

Gets the extender logger.

Specified by:

GetExtenderLogger in class PlanElementBase

Returns:

the logger

ExecuteExtender

public void ExecuteExtender(ExecutionHandle Handle)
                     throws ExecutionRunTimeException,
                            ExecutionInternalErrorException,
                            ExecutionCancelException,
                            ExecutionBreakException

Description copied from class: PlanElementBase

Execute extender. This class is implemented by extenders of the class

Specified by:

ExecuteExtender in class PlanElementBase

Parameters:

Handle - the execution handle

Throws:

ExecutionRunTimeException - A runtime error occurred

ExecutionInternalErrorException - An internal error occurred

ExecutionCancelException - The execution was canceled

ExecutionBreakException - The execution was terminated

ValidatePreExecution

public void ValidatePreExecution(ExecutionHandle Handle)
                          throws ExecutionValidationException

Description copied from interface: IPlanElement

Validate the element and any sub element it contains before it is executed

Parameters:

Handle - the execution handle

Throws:

ExecutionValidationException - A validation error occurred