org.activemath.exercises.generators
Class Randomizer

java.lang.Object
  org.activemath.exercises.openmath.OpenMath
      org.activemath.exercises.InteractionGenerator
          org.activemath.exercises.generators.Static
              org.activemath.exercises.generators.Randomizer

public class Randomizer
extends Static

Randomizer of exercises. Replaces variables in expressions with values picked randomly from a list. The extensions for intervals and generated mathematical expressions are documented at: http://www.matracas.org/escritos/index.en.html#edtech2007_randomizer

Version:

$Revision: 1.18 $ $Date: 2008/01/08 10:10:09 $

Field Summary

protected boolean	adaptKnowledge
protected String	competency
protected String	conceptId
protected String	difficulty
protected org.jdom.Element	initialInteraction
protected Map	knownInteractions
protected String	typicalLearningTime
protected Map	variables

Fields inherited from class org.activemath.exercises.generators.Static

initialNode

Fields inherited from class org.activemath.exercises.InteractionGenerator

activemathNamespace, dublinCoreNamespace, exercise, exerciseId, lang, localUserModel, localUserModelActive, masterGenerator, om, omdocNamespace, openmathNamespace, parameters, presentationStrategy, serializer, session, theoryId

Constructor Summary

Randomizer(LocalUserModel localUserModel)

Method Summary

protected String	getConstantName(org.jdom.Element om)
org.jdom.Element	getInteraction() Produce the initial node, where the exercise really starts.
org.jdom.Element	getInteraction(String id) Produce an interaction element from the given ID attribute.

Methods inherited from class org.activemath.exercises.InteractionGenerator

abort, getAnswerEvaluator, getExerciseDocument, getExerciseId, getFeedback, getName, getParameters, getPresentationStrategy, getSession, getTheoryId, hasAnswerMap, isStrategy, setExerciseDocument, setExerciseId, setIsStrategy, setLang, setMasterGenerator, setName, setParameters, setPresentationStrategy, setSession, setTheoryId

Methods inherited from class org.activemath.exercises.openmath.OpenMath

applyBinding, getOmobjContents, oma, oma, oma, oma, oma, ombind, ombind, ombind, ombind, ombind, ombvar, ombvar, ombvar, ombvar, ome, ome, ome, ome, omf, omf, omi, omi, omobj, oms, omstr, omv, output, setOmNamespace, substituteVariables, tidyForOpenMath1, toDouble, toInt

Methods inherited from class java.lang.Object

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

Field Detail

initialInteraction

protected org.jdom.Element initialInteraction

knownInteractions

protected Map knownInteractions

variables

protected Map variables

conceptId

protected String conceptId

competency

protected String competency

difficulty

protected String difficulty

typicalLearningTime

protected String typicalLearningTime

adaptKnowledge

protected boolean adaptKnowledge

Constructor Detail

Randomizer

public Randomizer(LocalUserModel localUserModel)

Method Detail

getInteraction

public org.jdom.Element getInteraction()

Produce the initial node, where the exercise really starts.

Overrides:

getInteraction in class Static

Returns:

JDOM element. Can be null only if the exercise item doesn't have a root element.

getInteraction

public org.jdom.Element getInteraction(String id)

Produce an interaction element from the given ID attribute. TODO: document here the basic structure of an interaction element.

Overrides:

getInteraction in class Static

Parameters:

id - value of the "id" attribute of the desired element.

Returns:

element found, or null.

getConstantName

protected String getConstantName(org.jdom.Element om)