Indexed DB support

[Gilad Egozi]

Hello,

Having that LocalStorage is very limited in size and query functionality, and WebSQL being a deprecated specification, I'm more-or-less forced to use Indexed-DB (I have a demand for a rather big storage for offline data in my application).

I find it rather surprising that there no *mature* library to support it. I am aware of indexeddb-gwt and gwt-indexeddb, but both seem not mature nor maintained enough.

Am I missing something here? Is there some other library that can do the job? Is the best approach simply to use JSNI?

Any help from someone who dealt with this issue would be very appreciated. Thanks.

Gilad.

[Jens]

You could use Elemental (GWT 2.5) I guess. Only downside could be that it only works in Webkit browsers because of vendor prefixes. But maybe thats your target browser anyway.

-- J.

[Cristian Rinaldi]

1) I am using IndexedDB with Elemental API, but is implemented the old specification of IndexedDB and I can't find the way to assign the version, therefore, the VersionChange is never launched.

2) Try updating WebCore with all IDL, but when running the build script, the parser,  throws the following error.

Traceback (most recent call last):

  File ". / Scripts / elemental_fremontcutbuilder.py", line 217, in <module>

    sys.exit (main ())

  File ". / Scripts / elemental_fremontcutbuilder.py", line 214, in main

    build_database return (idl_files, database_dir)

  File ". / Scripts / elemental_fremontcutbuilder.py", line 139, in build_database

    builder.import_idl_file (file_name, webkit_options)

  File "/ home / cristian / Logikas / Frameworks / gwt-source / trunk / elementary / idl / scripts / databasebuilder.py", line 472, in import_idl_file

    idl_file = self._load_idl_file (file_path, import_options)

  File "/ home / cristian / Logikas / Frameworks / gwt-source / trunk / elementary / idl / scripts / databasebuilder.py", line 86, in _load_idl_file

    raise RuntimeError ('Failed to load file% s:% s'% (file_name, e))

RuntimeError: Failed to load file ./scripts/../third_party/WebCore/html/canvas/Uint8ClampedArray.idl: At line 37 offset 28: Expected "(" or "]" or "," but "c" found " TypedArray = unsigned char "

Traceback (most recent call last):

  File ". / Scripts / elementaldomgenerator.py", line 164, in <module>

    sys.exit (main ())

  File ". / Scripts / elementaldomgenerator.py", line 155, in main

    database_dir, use_database_cache)

  File ". / Scripts / elementaldomgenerator.py", line 120, in GenerateDOM

    systems = systems)

  File "/ home / cristian / Logikas / Frameworks / gwt-source / trunk / elementary / idl / scripts / elementalgenerator.py", line 279, in Generate

    self.PopulateMixinBase (self._database.GetInterface ('ElementalMixinBase'), mixins)

  File "/ home / cristian / Logikas / Frameworks / gwt-source / trunk / elementary / idl / scripts / database.py", line 188, in GetInterface

    raise RuntimeError ('Interface% s is not loaded'% interface_name)

RuntimeError: Interface is not loaded ElementalMixinBase

Any ideas about the two problems?