The problem with emitting change notification on writes is that they dont propogate across tabs, my library has to use localstorage to emit events across tabls and keep track of a change sequence in each tab
This would be a welcome addition to the spec (after we get to enumerate databases) :) On 5 February 2013 21:59, [email protected] <[email protected]> wrote: > One solution would be to don't call directly to IndexedDB methods but > instead use custom wrappers that fit better with your application > (this is what I'm doing), but definitelly I totally agree with you > that IndexedDB should raise events when a row has been > inserted/updated/deleted. I think it was talked about it would be an > explosion of events, but I'm not sure about this... having events > would be useful to develop triggers to maintain database consistency, > for example :-) > > 2013/2/5 Miko Nieminen <[email protected]>: > > Hi, > > > > I'm new to this forum and I'm not completely sure if I'm posting to right > > list. I hope I am. > > > > I've been playing with IndexedDB to learn how to use it and around this > > experiment I wrote a blog article about my experiences. > > > > While writing my article, I realized there is no way to add event > listeners > > for object store to get notifications when new object is added, existing > one > > is modified or one is deleted. I think lack of these events makes some > use > > cases much more complicated than one would hope. Use cases like keeping > > local data in sync with remote database, synchronizing views between > > multiple windows or creating generic data indexers or manipulation > > libraries. I know there are ways to go around the lack of these events, > but > > having those would make things much easier. > > > > Is there any reason why these are not included in the specification? It > just > > feels bit strange when similar mechanism is included in WebStorage API, > but > > not in IDB. I suppose right moment to emit these events would be just > after > > emitting transaction complete. > > > > I wasn't able to find any references from the archives and I hope I'm not > > asking same question again. Also I hope I'm not asking this question too > > late. > > > > My blog article talks about this in a bit more detailed level under > header > > "Shortcomings of IndexedDB".. The whole article is quite long so you > might > > want to skip most of it. You can find it from > > > http://mini-thinking.blogspot.co.uk/2013/02/web-app-example-using-indexeddb.html > > > > Thanks, > > -- > > Miko Nieminen > > [email protected] > > [email protected] > > > > > > -- > "Si quieres viajar alrededor del mundo y ser invitado a hablar en un > monton de sitios diferentes, simplemente escribe un sistema operativo > Unix." > – Linus Tordvals, creador del sistema operativo Linux > >
