ItemFileReadStore don't accept empty arrays as attribute values

[guest]

DESCRIPTION:

Data source "ItemFileReadStore?" hasAttribute responds false if an attribute exists but its value is an empty array. The behavior seems different in the other data sources.

HOW TO REPRODUCE:

Open ​http://82.230.65.68:31416/~fred/dojo/fred_samples/bug_016.html Click on the button

RESULT:

A panel that displays "false"

EXPECTED RESULT:

A panel that displays "true", as the "children" attribute is indeed defined in the data source

[bill]

Oops, I guess ItemFileReadStore? is in core. My mistake.

[guest]

Btw, this comes from the hasAttribute() function in ​http://trac.dojotoolkit.org/browser/dojo/trunk/data/ItemFileReadStore.js#L120

Don't know what the proper fix should be, thought.

[Jared Jurkiewicz]

I don't think this is a bug. There is no value for that attribute, so how can it have that attribute? Calling getValue() on it would also return undefined/null.

I'll look a bit further on it, but I'm not sure this is actually a bug.

[Jared Jurkiewicz]

This is expected behavior of IFRS. Setting a value to an empty array is the same as not having that attribute. It's documented in the code to work that way.