org.problets.student
Class StudentModel

java.lang.Object
  java.util.Observable
      org.problets.student.StudentModel

All Implemented Interfaces:

GradeConstants

public class StudentModel
extends java.util.Observable
implements GradeConstants

StudentModel class to record all student-related information

Author:

Amruth Kumar

Field Summary

static java.lang.String

HEADER

Fields inherited from interface org.problets.tutor.GradeConstants

CORRECT, GENERATED, gradeText, INCORRECT, MISSED, PARTIAL, TOTAL_STATS, UNATTEMPTED

Constructor Summary

StudentModel(KnowledgeModel correctKM)
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Method Summary

void	addtoAnswer(CodeSegmentAttempt step) Adds a code segment answer for coding problems
void	addtoAnswer(ErrorLine inErrorLine) This subsumes ErrorLine and LineOutput versions below public void addtoAnswer( AbstractLine line ) { currentAnswer.addtoAnswer( line ); }
void	addtoAnswer(ExpressionViewStep step) Adds to the answer for an expression evaluation problem
void	addtoAnswer(LineOutput inOutput) Adds to the answer for an output problem - Needed to enter "No Output"
void	addtoAnswer(LineOutput inOutput, java.util.Vector actualOutput, java.lang.Object source) Adds to the answer for an output problem
void	addtoAnswer(java.util.Vector dataTrace) Adds to the answer for a state problem
void	addToGrades(StudentRecord newGrade) Adds grade for another problem
int[]	getAbbreviatedPerformance() Returns the ABBREVIATED performance for ALL the learning objectives
java.util.Vector	getAllLearningObjectives() Returns all the learning objectives for this topic, not just those where the student needs to solve more problems
java.util.Vector	getAnswers()
java.util.Vector	getAnswersForLine(int lineNumber)
java.util.Vector	getDetailedPerformance() Returns the detailed performance for ALL the learning objectives
java.lang.String	getGradesAbbreviated(boolean singleLine) Returns the number of problems the student generated, attempted, solved correctly, partially and incorrectly
java.lang.String	getGradesDetailed() Returns the student's grade individually for each problem.
java.lang.Object	getLastAnswer()
StudentRecord	getLastGrade() Helps CodeFeedbackManager add time spent on problem
int	getNumberEntries()
java.lang.String	getProgress() Returns only the number of problems generated and attempted
IndividualKnowledgeModel	getStudentKM() Returns an immutable reference to the student's knowlege model - used by conceptmap.OpenStudentModeler
java.util.Vector	getStudentKUs() Returns a clone of the vector of references to the actual knowledge units in the student model
java.util.Vector	getStudentLearningObjectives() Returns the vector of pointers to knowledge units for this session for the student
boolean	isLastAnswerCorrect() Returns whether the last problem was solved correctly
boolean	isProblemAttempted() ----------------------------------------------------- Method to return whether the problem has been attempted
static void	main(java.lang.String[] args)
void	printStudentKnowledgeModel()
void	reset() ----------------------------------------------------- Method to reset all simulation flags for current instance of the problem.
void	resetGrades() Resets the grades for the student
void	undoAllAnswers()
void	undoLastAnswer() Removes the last entry in the answer
void	updateAnswersForLine(int lineNumber, java.util.Vector newAnswers, java.util.Vector actualAnswer) Updates the answer for a line for an output problem
void	updateCredit(java.lang.String problemTypeString, int gradeType) Method to work with the new grade() method - It will let TutorModel.grade() register correct/incorrect/missed for the right type of problem.
void	updateLearningObjectives() Goes through all the learning objectives to see if they have been met
void	verifyOutputCorrectness(java.util.Vector actualAnswer) If the user manipulates the output of a program on the OutputStreamView panel this method is used to verify the correctness of the changes for Error-Flagging purposes

Methods inherited from class java.util.Observable

addObserver, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers

Methods inherited from class java.lang.Object

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

Field Detail

HEADER

public static final java.lang.String HEADER

See Also:

Constant Field Values

Constructor Detail

StudentModel

public StudentModel(KnowledgeModel correctKM)

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Parameters:

-

Method Detail

reset

public void reset()

----------------------------------------------------- Method to reset all simulation flags for current instance of the problem.

Parameters:

none -

getStudentLearningObjectives

public java.util.Vector getStudentLearningObjectives()

Returns the vector of pointers to knowledge units for this session for the student

getAllLearningObjectives

public java.util.Vector getAllLearningObjectives()

Returns all the learning objectives for this topic, not just those where the student needs to solve more problems

getStudentKUs

public java.util.Vector getStudentKUs()

Returns a clone of the vector of references to the actual knowledge units in the student model

getStudentKM

public final IndividualKnowledgeModel getStudentKM()

Returns an immutable reference to the student's knowlege model - used by conceptmap.OpenStudentModeler

getAnswersForLine

public java.util.Vector getAnswersForLine(int lineNumber)

getLastAnswer

public java.lang.Object getLastAnswer()

getAnswers

public java.util.Vector getAnswers()

getNumberEntries

public int getNumberEntries()

isProblemAttempted

public boolean isProblemAttempted()

----------------------------------------------------- Method to return whether the problem has been attempted

Parameters:

none -

Returns:

true if problem has been attempted, false otherwise -------------------------------------------------------

getDetailedPerformance

public java.util.Vector getDetailedPerformance()

Returns the detailed performance for ALL the learning objectives

getAbbreviatedPerformance

public int[] getAbbreviatedPerformance()

Returns the ABBREVIATED performance for ALL the learning objectives

getProgress

public java.lang.String getProgress()

Returns only the number of problems generated and attempted

isLastAnswerCorrect

public boolean isLastAnswerCorrect()

Returns whether the last problem was solved correctly

getGradesAbbreviated

public java.lang.String getGradesAbbreviated(boolean singleLine)

Returns the number of problems the student generated, attempted, solved correctly, partially and incorrectly

getGradesDetailed

public java.lang.String getGradesDetailed()

Returns the student's grade individually for each problem.

getLastGrade

public StudentRecord getLastGrade()

Helps CodeFeedbackManager add time spent on problem

addtoAnswer

public void addtoAnswer(ErrorLine inErrorLine)

This subsumes ErrorLine and LineOutput versions below public void addtoAnswer( AbstractLine line ) { currentAnswer.addtoAnswer( line ); }

addtoAnswer

public void addtoAnswer(LineOutput inOutput)

Adds to the answer for an output problem - Needed to enter "No Output"

addtoAnswer

public void addtoAnswer(LineOutput inOutput,
                        java.util.Vector actualOutput,
                        java.lang.Object source)

Adds to the answer for an output problem

addtoAnswer

public void addtoAnswer(java.util.Vector dataTrace)

Adds to the answer for a state problem

addtoAnswer

public void addtoAnswer(ExpressionViewStep step)

Adds to the answer for an expression evaluation problem

addtoAnswer

public void addtoAnswer(CodeSegmentAttempt step)

Adds a code segment answer for coding problems

undoLastAnswer

public void undoLastAnswer()

Removes the last entry in the answer

undoAllAnswers

public void undoAllAnswers()

updateAnswersForLine

public void updateAnswersForLine(int lineNumber,
                                 java.util.Vector newAnswers,
                                 java.util.Vector actualAnswer)

Updates the answer for a line for an output problem

verifyOutputCorrectness

public void verifyOutputCorrectness(java.util.Vector actualAnswer)

If the user manipulates the output of a program on the OutputStreamView panel this method is used to verify the correctness of the changes for Error-Flagging purposes

updateCredit

public void updateCredit(java.lang.String problemTypeString,
                         int gradeType)

Method to work with the new grade() method - It will let TutorModel.grade() register correct/incorrect/missed for the right type of problem. Note that it will register for not just the current problemType, but also for any others that may come up in the problem. E.g., if the current problem type is syntax error (line 6) and dangling pointer (line 9), and the user answers syntax error (line 12) and dangling pointer (line 9) and lost object (line 15) then TutorModel will register as follows: dangling pointer - correct syntax error - incorrect (for 12) and missed (for line 6) lost object - incorrect (for line 15)

updateLearningObjectives

public void updateLearningObjectives()

Goes through all the learning objectives to see if they have been met

addToGrades

public void addToGrades(StudentRecord newGrade)

Adds grade for another problem

resetGrades

public void resetGrades()

Resets the grades for the student

printStudentKnowledgeModel

public void printStudentKnowledgeModel()

main

public static void main(java.lang.String[] args)