ch.tatool.element

Interface Executable

All Superinterfaces:

Node, PropertyHolder

All Known Implementing Classes:

AbstractHTMLExecutable, AbstractInstructionExecutable, BlockingAWTExecutable, BlockingExecutable, ConfidenceRatingExecutable, DefaultModuleStatusRegionConfigurator, GenericContentExecutable, HTMLExecutable, ImageListInstructionExecutable, ListInstructionExecutable, NonBlockingAWTExecutable, QuestionnaireExecutable, StatusRegionConfigurator, TestTask

public interface Executable
extends Node

Executable element interface. ExecutableElements need to implement it in order to take part in the execution flow.

Author:

Michael Ruflin

Method Summary

Methods

Modifier and Type	Method and Description
void	cancel() Cancels the execution.
void	execute() Execute the element.
void	setExecutionContext(ExecutionContext context) Set the execution context.

Methods inherited from interface ch.tatool.element.Node

getParent, setParent

Methods inherited from interface ch.tatool.data.PropertyHolder

clearProperties, getId, getKeys, getProperty, removeProperty, setProperty

Method Detail

execute

void execute()

Execute the element. The Executor will hand over complete control over the execution to this element. initializeElement is normally called before calling execute. The only exception is the case where this element has previously returned an outcome of SUSPENDED, in which case obviously NO re-initialization is required/desired. This method gets called in a separate thread by the system. The element has to take care to block the thread until the element has finished (either through user input or by calling cancelExecution). Once the method is called, the element has full control over the ExecutionDisplay.

cancel

void cancel()

Cancels the execution. This method allows the system to gracefully cancel an execution. The Executable should try to finish any ongoing work and return execute as soon as possible.

setExecutionContext

void setExecutionContext(ExecutionContext context)

Set the execution context. This method is called by the Executor before and after calling execute to set / remove the context from the element.

Parameters:

context -