dataSource.data() doesn't return the datas - kendo-ui

Question

I'm currently testing kendoUI and developping a little webapp.
For some reason I need to pass my dataSource.datas from a view to another. In order to do this I use sessionStorage and when I try to put my dataSource.data() in sessionStorage, the return is empty.
See here when I put a log to test if my dataSource.data() is correctly inserted/returned
However, when I put a log to test ma dataSource I can clearly see that _data is not empty as it is showed in the follow picture :
Did someone know the origin of my problem ?
EDIT
here is the code that shows how I add my dataSource to sessionStorage :
var qui = (e.view.params.qui) ? e.view.params.qui : "";
var quoi = (e.view.params.quoi) ? e.view.params.quoi : "";
dataSourceFournisseurs = new kendo.data.DataSource({
transport : {
read : {
url:"annuaire.json",
dataType:"json"
}
},
schema : {
data : "data",
model : {
DISTANCE: function() {
var lat = this.get("LATITUDE");
var lng = this.get("LONGITUDE");
var distance = APP.distanceBetweenCoords(lat, lng);
return "à " + distance + "km";
}
}
},
sort : {
field : "LIBELLE",
dir : "asc"
},
filter: [
{ field: "LIBELLE", operator: "contains", value: qui },
{ field: "NAFLIBELLE", operator: "contains", value: quoi }
]
});
console.log(dataSourceFournisseurs);
session.setValueObject("liste", dataSourceFournisseurs.data());
And here is how I retrieve it :
var datas = session.getValueObject("liste");
console.log(datas);
PS :
setValueObject and getValueObject are two methods I wrote in order to Stringify the datas I set and Parse the retrieved datas (there are fully functionnal I use them for over a year)
the two console.log are those that represent the picture above (picture 1 with second log and picture 2 with first log)
EDIT END

Answer 1

Try using dataSourceFournisseurs.view(). This should give you the all of the data. Using data is meant for initial configuration, and is not meant to be used as a method for retrieving data.
Bonne chance!