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