Bug 62331 – IndexedDB createObjectStore should throw if options argument value is an object

• Status: RESOLVED
• Resolution: INVALID
• Component: New Bugs

[Mark Pilgrim (Google)]

Created attachment 96490 [details]
test case

http://dvcs.w3.org/hg/IndexedDB/raw-file/tip/Overview.html#options-object-concept states "if any attribute has a getter function or its value is an object, a NOT_TRANSIENT_ERR exception must be thrown."

To test this, I create a new Boolean object and use it in the options object when creating an objectstore. According to the above spec text, this should throw.

Expected behavior: throw webkitIDBDatabaseException.NON_TRANSIENT_ERR
Actual behavior: object store created, no exception thrown

Test case attached.

[Joshua Bell]

The IndexedDB spec is changing to use the (new) WebIDL "dictionary" type for the option objects, and that text has been removed.

My reading of WebIDL [1] and ES5 [2] is that:
* Only dictionary members mentioned in the IDL are considered; ergo, extra properties on the JS object are ignored.
* The [[Get]] internal method will call a getter (ES5 8.12.3)

so this should be valid:

db.createObjectStore('my-name', {
  get keyPath() { return 'my.path'; },
  get autoIncrement() { return true; },
  ignore_other_properties: {},
  even_funky_stuff_like: document
});

... and this appears to work in Chrome 15.

[1] http://dev.w3.org/2006/webapi/WebIDL/#es-dictionary
[2] http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf

So, marking this as invalid, although there may be some additional edge cases to consider.