org.activemath.exercises.model
Class Exercise

java.lang.Object
  org.activemath.exercises.model.Exercise

public class Exercise
extends Object

Constructor Summary

Exercise(String id)

Method Summary

void	addInteraction(Interaction interaction) Adds an interaction to this exercise.
protected void	addKey(String key)
void	addTransition(Transition transition) Adds a transition to the exercise.
Interaction	createInteraction(String id) Create a new Interaction for this exercise.
void	deleteInteraction(Interaction interaction) Delete an interaction from this exercise.
void	deleteTransition(Transition transition) Delete a transition from this exercise.
String	generateKey() This method generate an unique (in exercise's scope) key.
Interaction	getCurrentInteraction()
org.jdom.Element	getGenerator()
String	getId()
Interaction	getInteraction(String id)
List	getInteractionKeys()
org.jdom.Element	getMetadata()
List	getOutgoingTransitions(Interaction interaction)
PresentationBlock	getProblemstatement()
Transition	getTransition(Interaction source, Interaction target, String key)
void	pushTransition(Interaction interaction, boolean down, Transition transition)
Interaction	run(Interaction interaction, List userInput)
void	setCurrentInteraction(Interaction interaction)
void	setGenerator(org.jdom.Element generator)
void	setMetadata(org.jdom.Element metadata)
void	setProblemstatement(PresentationBlock problem)

Methods inherited from class java.lang.Object

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

Constructor Detail

Exercise

public Exercise(String id)

Method Detail

createInteraction

public Interaction createInteraction(String id)

Create a new Interaction for this exercise. If an interaction with the same id is already present returns an existing interaction without creating a new one.

Parameters:

id - of the creating interaction.

Returns:

an interaction

addInteraction

public void addInteraction(Interaction interaction)

Adds an interaction to this exercise. The createInteraction doesn't add a new interaction to the exercise. It should be done explicitly.

Parameters:

interaction - an interaction to be added.

addTransition

public void addTransition(Transition transition)

Adds a transition to the exercise.

Parameters:

transition - to be added.

generateKey

public String generateKey()

This method generate an unique (in exercise's scope) key. Needed for retrieving components of the exercise during authoring.

Returns:

the key

deleteInteraction

public void deleteInteraction(Interaction interaction)

Delete an interaction from this exercise.

Parameters:

interaction - to be deleted.

deleteTransition

public void deleteTransition(Transition transition)

Delete a transition from this exercise.

Parameters:

source -

target -

key -

getCurrentInteraction

public Interaction getCurrentInteraction()

Returns:

a current interaction, in other words return the surrent state of the finite state machine.

getGenerator

public org.jdom.Element getGenerator()

getId

public String getId()

getInteraction

public Interaction getInteraction(String id)

getInteractionKeys

public List getInteractionKeys()

getMetadata

public org.jdom.Element getMetadata()

getProblemstatement

public PresentationBlock getProblemstatement()

getTransition

public Transition getTransition(Interaction source,
                                Interaction target,
                                String key)

getOutgoingTransitions

public List getOutgoingTransitions(Interaction interaction)

pushTransition

public void pushTransition(Interaction interaction,
                           boolean down,
                           Transition transition)

setCurrentInteraction

public void setCurrentInteraction(Interaction interaction)

setGenerator

public void setGenerator(org.jdom.Element generator)

setMetadata

public void setMetadata(org.jdom.Element metadata)

setProblemstatement

public void setProblemstatement(PresentationBlock problem)

addKey

protected void addKey(String key)

run

public Interaction run(Interaction interaction,
                       List userInput)