Firefox Bookmarks SQLite structure

Question

I am trying to write a Firefox 3 add-on which will enable me to easily re-tag bookmarks. For example I have some bookmarks tagged \"development\" and some tagged \"Development\"

Answer 1

You probably already found out yourself, but tags are applied as follows:

The central place for all URLS in the database is moz_places. The table moz_bookmarks refers to it by the foreign key column fk.

If you tag a bookmark, there are multiple entries in moz_bookmarks, all having the same reference fk: The first is the bookmark itself (having the title in the title column) For each tag, there's an additional entriy in moz_bookmarks having the same foreign key fk and refering to the tag in the parent coumn (which points to the moz_bookmarks row for the tag).

If you have a bookmark 'http://stackoverflow.com' titled 'Stackoverflow' with tags 'programming' and 'info', you will get:

moz_places
----------
id    url   (some more)
3636  http://stackoverflow.com

moz_bookmarks
-------------
id    type    fk     parent    title          (other columns omitted...)
332   1       3636   5         Stackoverflow  (parent=5 -> unfiled folder)
333   2       (NULL) 4         programming    (programming tag, parent=4 -> tags folder)
334   1       3636   333       (NULL)         (link to 'programming' tag)
335   2       (NULL) 4         info           (info tag, parent=4 see above)
336   1       3636   335       (NULL)         (link to 'info' tag)

Hope this helps...