source: Doc/Diagrams/class_diagram.dot

digraph FacilitatorToolClassDiagram {
        fontname = "Tahoma"
        fontsize = 8
        node [
                fontname = "Tahoma"
                fontsize = 8
                shape = "record"
        ]
        edge [
                fontname = "Tahoma" 
                fontsize = 8
        ]

        Survey [
                label = "{Survey|$title : String \l$description : String \l$creator : User \l$questions : Question[] \l|}"
        ]
        User [
                label = "{User|$email : String \l$passwordHash : String \l$passwordSalt : String\l|}"
        ]
        Question [
                label = "{Question|$code : String \l$title : String \l$type : String \l$description : String \l$category : String \l$answers : String[] \l|}"
        ]
        Answer [
                label = "{Answer|$question : Question \l$values : Array \l|}"
        ]
        AnswerSet [
                label = "{AnswerSet|$survey : Survey \l$respondent : Respondent \l$datetime : DateTime \l$answers : Array \l|}"
        ]
        Respondent [
                label = "{Respondent|$email : String \l$passwordHash : String \l$passwordSalt : String\l|}"
        ]
        SurveyInstance [
                label = "{SurveyInstance|$survey : Survey \l$starttime : DateTime \l$endtime : DateTime \l$open : boolean \l$presetanswers : Answer[] \l$answersets : AnswerSet[] \l|}"
        ]
        Application [
                label = "{Application|$title : String \l$description : String \l$style : String \l|}"
        ]
        ApplicationInstance [
                label = "{ApplicationInstance|$application : Application \l$starttime : DateTime \l$endtime : DateTime \l$open : boolean \l$playerresults : PlayerResult[] \l$groupresults : GroupResults[] \l$periodicresults : PeriodicResults[]|}"
        ]
        Session [
                label = "{Session|$title : String \l$creator : User \l$creationdate : DateTime \l$pipeline : Survey/Application[] \l|}"
        ]
        SessionInstance[
                label = "{SessionInstance|$title : String \l$location : String \l$facilitator : User \l$starttime : DateTime \l$endtime : DateTime \l$notes : String[] \l$session : Session \l$surveyinstances : SurveyInstance[] \l$applicationinstances : ApplicationInstance[] \l|}"
        ]
        PlayerResult[
                label = "{PlayerResult|$value : KeyValuePair[] \l$respondent : Respondent \l$application : Application \l|}"
        ]
        GroupResult[
                label = "{GroupResult|$value : KeyValuePair[] \l$respondent : Respondent \l$application : Application \l|}"
        ]
        PeriodicResult[
                label = "{PeriodicResult|$value : KeyValuePair[] \l$respondent : Respondent \l$application : Application \l|}"
        ]

        edge [
                arrowhead = "none"
        ]
        Survey -> User [headlabel = "1" "creator"]

        Survey -> Question [headlabel = "*" label = "questions"]

        Answer -> Question [headlabel = "1" label = "question"]

        AnswerSet -> Survey [headlabel = "1" label = "survey"]
        AnswerSet -> Answer [headlabel = "*" label = "answers"]
        AnswerSet -> Respondent [headlabel = "1" label = "respondent"]

        SurveyInstance -> Survey [headlabel = "1" label = "survey"]
        SurveyInstance -> AnswerSet [headlabel ="*" label = "answersets"]
        SurveyInstance -> Answer [headlabel = "*" label = "presetanswers"]
        
        ApplicationInstance -> Application [headlabel = "1" label = "application"]
        ApplicationInstance -> PlayerResult [headlabel = "*" label = "playerresults"]
        ApplicationInstance -> GroupResult [headlabel = "*" label = "groupresults"]
        ApplicationInstance -> PeriodicResult [headlabel = "*" label = "periodicresults"]

        Session -> User [headlabel ="1" label = "creator"]
        Session -> Survey [headlabel = "*" label = "pipeline"]
        Session -> Application [headlabel = "*" label ="pipeline"]

        SessionInstance -> User [headlabel = "1" label = "facilitator"]
        SessionInstance -> Session [headlabel = "1" label = "session"]
        SessionInstance -> SurveyInstance [headlabel = "*" label = "surveyinstances"]
        SessionInstance -> ApplicationInstance [headlabel = "*" label = "applicationinstances"]
        
        PlayerResult -> Respondent [headlabel = "1" label = "respondent"]
        GroupResult -> Respondent [headlabel = "1" label = "respondent"]
        PeriodicResult -> Respondent [headlabel = "1" label = "respondent"]
        
}