"jose isaias cabrera" wrote...
>
> Greetings. My apologies for the lengthiness...
>
> We are running an utility with about 5 clients using two DBs:
> 1. PrimaryPC
> 2. Shared folder
>
> The PrimaryPC contains the original data and changes, while the SharedDB
> in
> the Shared Folder is the one that provides original indexing of those
> records. There are no duplicate indexes. When a new records is open, the
> SharedDB provides the index and so, no two users will ever have the same
> record and will never update the same record.
>
> The SharedDB is the one that provides information about other users'
> records
> to the other folks and so, an UpdateDB function was created to push
> updates
> to the SharedDB from the PrimaryPC.
>
> I will throw one more wrench in the motor... We have SharedPCs that when
> users login will bring the data of that users from the SharedDB to this
> SharedPC and thus the user can see his/her records and work without any
> problem. However, the UpdateDB function does not work from a SharedPC
> because it is not the PrimaryPC of the user.
>
> The Update was working fine (and works fine this way) because I would
> attach
> to the SharedDB and push all the records of the user to the SharedDB.
> But,
> as the number of records grew, the it would take 20-30 seconds and
> sometimes
> we find ourselves locking the SharedDB longer than needed.
>
> I added a new column, XtraB, (Don-t ask), which changes every time a
> record
> is edited and saved with the value 'yyyy-mm-dd hh:mm:ss'. I am trying to
> change the UpdateDB function to only push the records that have been saved
> in the PrimaryPC. Here is my programming steps that are not working:
>
> dba = new SqliteDatabase(sqldba); //connect to the SharedDB. Works. :-)
>
> q = "ATTACH '" ~ sqldb ~ "' AS client; "; // sqldb is the path to the
> local
> PC. Works.
>
> q = "BEGIN;";
> q ~= "REPLACE INTO LSOpenProjects
> SELECT * FROM client.LSOpenProjects
> WHERE login)='" ~ pm["login"] ~ "' AND XtraB < client.XtraB; ";
> q ~= "COMMIT;";
>
> The above is not working... Yes, I am a newbie. Well, kinda,
> nonetheless,
> yes.
>
> What I would like to do is to push all the records that have a higher date
> ('yyyy-mm-dd hh:mm:ss') in the local DB than the SharedDB. They should
> really be equal, if no changes have been made.
>
> And then, the wrench in the motor is to bring from the sharedDB to the
> SharedPC the records that are also with newer dates then the previously
> brought from the SharedDB. I have something like above,
>
> SqliteDatabase dbu = new SqliteDatabase(sqldb);
>
> q = "ATTACH '" ~ sqldba ~ "' AS c; "; // works
>
> q = "BEGIN;";
> q ~= "INSERT OR REPLACE INTO LSOpenProjects
> SELECT * FROM c.LSOpenProjects
> WHERE login='" ~ pm["login"] ~ "' AND c.XtraB > XtraB; ";
> q ~= "COMMIT;";
>
> Not working either. Any help would be greatly appreciated.
>
> thanks,
>
> josé
Never mind about this... I worked around it.
thanks,
josé
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