Items modified at page boundaries of Observable wrapped store are treated as removed items

[Justin Doherty]

Problem: If I modify an Item that is at a page boundary of an Observable wrapped store the observe callback treats it as a removed item, the insertedInto argument of the callback is -1.

I don't believe this is correct behaviour and I believe it has something to do with the atEnd variable on line 67 of Observable.js

require([
    "dojo/store/Memory",
    "dojo/store/Observable"
    ], function(Memory, Observable) {
    var numItems = 10;
    var data = [];
    for (var i = 0; i < numItems; i++) {
        data.push({
            id: i,
            label: "Label: " + i
        });
    }
    var store = Observable(new Memory({
        data: data
    }));
    var results = store.query(function() {
        return true;
    }, {
        start: 0,
        count: 5
    });
    results.observe(function(object, from, to) {
        console.log(object.label + " " + from + " " + to);
    });
    store.put(results[results.length - 1]);
});

[Justin Doherty]

I believe this and ticket:15228 are causing issues with the OnDemandGrid? in the dgrid module when modifying items that lie on page boundaries. These items disappear from the grid when they are edited.

[Kris Zyp]

Patch for sliceable query results

[dylan]

I believe this was fixed in 1.9. Kris, can you verify please?