No way to tell if an item exists about lawnchair

[brianleroux]

I think an exists method is likely what you are looking for... would be easy to add into the LawnchairAdaptorHelpers.js file. Also, given that a store can never really get larger than 2mb I'm ok with iterating over the set until it proves to be actually a user experience problem (not the case for any apps I've used it for).

Wanna give writing exists a go and sending a pull request?

[timbertson]

Will do.

With regards to the 2mb limit, why is that? Is that the case for all adapters? (I know why it would be so for the DOM adapter)

[timbertson]

I notice it looks like the webkit and gears sqlite adapters will callback(null) from a get() call when an item doesn't exist. Is it worth implementing the same behaviour for the other adapters to keep things consistent?

[timbertson]

I've now done the above, and sent a pull request.
exists() might still be useful, but I think the get() callback behaviour is sufficient for now...

[daviddahl]

Perhaps you should just keep an array named "currentKeys" in the data store that knows all of the currently stored keys? searching that is quicker - you just have to make sure you update it each time records are stored or removed.

[timbertson]

I could do, but I care a lot more about consistency than speed, and it seem slike a deficiency in functionality.

Anyways, this issue was fixed in commit bcfba8f so I should close it :)