Promise-based rewrite of most of the codebase, with asynchronous database and file access -- see https://github.com/zotero/zotero/issues/518 for details.
WARNING: This includes backwards-incompatible schema changes.
An incomplete list of other changes:
- Schema overhaul
- Replace main tables with new versions with updated schema
- Enable real foreign key support and remove previous triggers
- Don't use NULLs for local libraryID, which broke the UNIQUE index
preventing object key duplication. All code (Zotero and third-party)
using NULL for the local library will need to be updated to use 0
instead (already done for Zotero code)
- Add 'compatibility' DB version that can be incremented manually to break DB
compatibility with previous versions. 'userdata' upgrades will no longer
automatically break compatibility.
- Demote creators and tags from first-class objects to item properties
- New API syncing properties
- 'synced'/'version' properties to data objects
- 'etag' to groups
- 'version' to libraries
- Create Zotero.DataObject that other objects inherit from
- Consolidate data object loading into Zotero.DataObjects
- Change object reloading so that only the loaded and changed parts of objects are reloaded, instead of reloading all data from the database (with some exceptions, including item primary data)
- Items and collections now have .parentItem and .parentKey properties, replacing item.getSource() and item.getSourceKey()
- New function Zotero.serial(fn), to wrap an async function such that all calls are run serially
- New function Zotero.Utilities.Internal.forEachChunkAsync(arr, chunkSize, func)
- Add tag selector loading message
- Various API and name changes, since everything was breaking anyway
Known broken things:
- Syncing (will be completely rewritten for API syncing)
- Translation architecture (needs promise-based rewrite)
- Duplicates view
- DB integrity check (from schema changes)
- Dragging (may be difficult to fix)
Lots of other big and little things are certainly broken, particularly with the UI, which can be affected by async code in all sorts of subtle ways.
With Task.spawn, regular expressions in Zotero.DB were causing "too much
recursion" errors on Windows with JIT enabled.
This requires a change to Q to allow async() to take a generator instead
of a generator-maker (which is the reason it was using Task.spawn to
begin with).
- Send modifier keys through to loadURI() when clicking Open Link in notes
- Open link in parent window from external note window
- Don't show both menus on right-click
Follow-up from #450
Full-text content is now synced to the server and other clients. Up to
~500K of content is transferred with each sync, so multiple syncs may be
necessary. Downloaded content is written to temporary files and
processed on idle (currently 5 seconds), so synced content may not be
immediately available.
Performance will improve with API syncing and async DB in 4.1.
This also includes some other full-text tweaks, such as storing
text converted from HTML in cache files, which may speed up phrase
searching.
Remove overrides for titles we now abbreviate correctly, and don't
delete potential prepositions that are rarely used as such in journal
titles ("hyphen", "midst", "minus", "modulo", outside", "pace", "past",
"plus", "round", "save", "til", "till", "times", "vice", "worth")
This change should improve Firefox startup time. If the Zotero pane is
opened before Zotero has initialized, the pane will be blocked with a
progress bar until it's done. Standalone currently does the same, but it
should be changed to just delay opening the window if possible.
The upgrade wizard has been disabled for schema upgrades, in the hope
that upgrades can be done in a way that won't break compatibility with
earlier versions (or that can at least be done in a way such that we can
put out point releases of the last major version that provide
compatibility during beta/post-upgrade periods).
This patch likely breaks many things, and definitely breaks connector
mode.
This change also removes upgrade steps for databases from Zotero 2.1b2
and earlier. Users with such databases will need to upgrade via Zotero
4.0.x first or delete their data directories and start anew. This should
only affect users who haven't opened Zotero since Nov. 2010.
Task.jsm allows not only generators but also iterators to be yielded,
using ``typeof yielded == 'Function'`` as the test for an iterator, but
since the Q promise includes a send() method, yielding a Q promise
instead of a Mozilla promise results in an infinite loop. To fix this,
we disable Q's send() method, which is just an outdated synonym for
invoke() anyway.
This will have to be done every time we update Q until send() is
removed, Task.jsm is changed, or we stop using Task.jsm with Q promises.
