Hi Jeremy,
I have been able to push my changes (after more Mercurial server problems) just
now. I reopened 9790 because Andrei's commit made IDBCursor and IDBObjectStore
constants unavailable from the global object. After all this, you should be
able to do the following for your need below:
myObjectStore.openCursor(IDBKeyRange.leftBound("key"),
IDBCursor.NEXT_NO_DUPLICATE);
Nikunj
On Jun 25, 2010, at 4:25 AM, Jeremy Orlow wrote:
> If I'm reading the current spec right (besides the "[NoInterfaceObject]"
> attributes that I thought Nikunj was going to remove), if I want to open a
> cursor, this is what I need to do:
>
> myObjectStore.openCursor(new IDBKeyRange().leftBound("key"), new
> IDBCursor().NEXT_NO_DUPLICATE);
>
> Note that I'm creating 2 objects which get thrown away after using the
> constructor and constant. This seems pretty wasteful.
>
> Jonas' proposal (which I guess Nikunj is currently in the middle of
> implementing?) makes things a bit better:
>
> myObjectStore.openCursor(window.indexedDB.makeLeftBoundedKeyRange("key"), new
> IDBCursor().NEXT_NO_DUPLICATE);
>
> or, when you have a single key that you're looking for, you can use the short
> hand
>
> myObjectStore.openCursor("key", new IDBCursor().PREV);
>
> But even in these examples, we're creating a needless object. I believe we
> could also use the prototype to grab the constant, but the syntax is still
> pretty verbose and horrid.
>
> Can't we do better?
>
> J
