I know that the MatrixCursor and SQLiteCursor classes work across processes, but has anyone tried implementing a cross-process cursor based directly on AbstractWindowedCursor?
The situation is that I'm working on an app with pluggable import/ export functions for its database, using a content provider to abstract the database part of that. In the case of exporting, a query is made against a special data transfer URI, and the resulting SQL query takes the desired fields from the plugin and selection criteria based on user settings in the app to build the SQL statement. Normally, I could just do the query and return the SQLiteCursor object that I get, but I also want to implement an option to export records that may not be included in the selection criteria but are related to those that are. In the Windows Mobile version of the app, I built an export list before actually running the export plugin, but in the interest of efficiency I'm trying to do that as part of the database abstraction here. I don't know SQL well enough to know if there is a way to do all of that in the one SQL statement, so I started thinking of a way to use AbstractWindowedCursor with an internal SQLiteCursor to handle it... the only way I could really do it that way would be to enforce moving through the cursor only from start to finish, but since this mechanism is intended for exporting to files it didn't sound like that would be unreasonable. Since the SQLiteCursor class is built on top of AWC, and seems to merely move things around using CursorWindow objects and that base code, it seems like that would work. I could try it when I get to that point, but if it doesn't work I'll have to scrap quite a bit of work and go back to the drawing board. If someone else has already done it and it works as a cross-platform cursor, or if it doesn't, then finding that out early would be a lot easier. Thanks! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
