//--------------------------------------------------------------------------------
//configuration
//--------------------------------------------------------------------------------
var storeIDField="Title";
var storeIDValue="myDataStore";
var storeTable="Nashorn.JS";
var storeValueField="Contents";
var str_ret='';
function print(s){
    str_ret+=s;
}
function println(s){
    str_ret+=s+'\n';
}
function alert(s){
    com.mendix.webui.FeedbackHelper.addTextMessageFeedback(
        root.getContext(),
        com.mendix.systemwideinterfaces.core.IFeedback.MessageType.INFO,
        s,
        true
    )
}
function getStoreObject(){
    var objStore=null;
    var objType=storeTable;
    var objIdentifierAttribute=storeIDField;
    var objIdentifierValue=storeIDValue;
    var objStoreAttribute=storeValueField;
     var arr_obj=com.mendix.core.Core.retrieveXPathQuery(
        root.getContext(),
        "//"+objType+"["+objIdentifierAttribute+"='"+objIdentifierValue+"']",
        1,
        0,
        {}
    );
    if(arr_obj.length>0){
        objStore=arr_obj[0];
    }else{
        objStore=com.mendix.core.Core.instantiate(root.getContext(),objType);
        objStore.setValue(root.getContext(),objIdentifierAttribute,objIdentifierValue);
        objStore.setValue(root.getContext(),objStoreAttribute,"{}");//script content goes here
        com.mendix.core.Core.commit(root.getContext(),objStore);
    }
    return objStore;
}
function getStoreValue(){
    var objType=storeTable;
    var objIdentifierAttribute=storeIDField;
    var objIdentifierValue=storeIDValue;
    var objStoreAttribute=storeValueField;
    try{
        return JSON.parse(
            getStoreObject().getValue(root.getContext(),objStoreAttribute)
        );
    }catch(e){
        return null;
    }
}
function setStoreValue(o){
    if(
        o!=null&&
        typeof(getStoreValue())=='object'
    ){
        var objType=storeTable;
        var objIdentifierAttribute=storeIDField;
        var objIdentifierValue=storeIDValue;
        var objStoreAttribute=storeValueField;
        objStore=getStoreObject();
        if(objStore!=null){
            try{
                objStore.setValue(
                    root.getContext(),
                    objStoreAttribute,
                    JSON.stringify(
                        o,
                        0,
                        '\t'
                    )
                );
                com.mendix.core.Core.commit(root.getContext(),objStore);
            }catch(e){
                return false;
            }
        }else{
            return false;
        }        
    }else{
        return false;
    }
}
function setStoreKV(k,v){
    try{
        var newobj=getStoreValue();
        newobj[k]=v;
        setStoreValue(newobj);
        return true;
    }catch(e){
        return false;
    }
}
function getStoreV(k){
    try{
        return getStoreValue()[k];
    }catch(e){
        return null;
    }
}
for(var i=0;i<8;i++){
    var v=[];
    for(var j=0;j<8;j++){
        v.push(Math.random())
    }
    setStoreKV(i,v);
}
try{
    alert(JSON.stringify(getStoreValue(),0,'_'));
    //--------------------------------------------------------------------------------
    //java.util.List<? extends IMendixObjectMember<?>> getChangedMembers(IContext context)
    //--------------------------------------------------------------------------------
    //alert(getStoreObject().getChangedMembers(root.getContext()));//???
    //--------------------------------------------------------------------------------
}catch(e){
    alert(e);
}