[EMAIL PROTECTED] wrote:
> In all of the desktop apps that I write, I omit the File->Save
> option altogether.
Incidentally, this is excellent from a usability point of view. It
seems rather ludicrous in this day and age that users of other
applications have to know the difference between persist
If you maintain a log of each transaction, perhaps in SQL or some
similar form, then you can create the inverse of that to undo or run it
again to redo. Each transaction can have its own registration ID.
I should anticipate that you would use some form of circular buffer to
make the process s
Ran wants the transaction journal to be a permanent transaction log,
with the ability to explicitly run a rollback operation on it (after
the transaction was committed). Unlimited undo support using only the
transaction control statements.
To answer the question, no, there's no support for that.
I am not sure what that means. I am looking for undo feature the way it is
implemented for example in a drawing application or in a word processor.
When the user makes a mistake or change his mind, he can undo several steps
and try again.
On 11/19/06, Jay Sprenkle <[EMAIL PROTECTED]> wrote:
On
What exactly do you mean by "own log of each transaction"? As I explained, I
have a complex database with many tables and triggers. It will not be simple
to implement undo the way it is explained in the wiki, and I suspect it will
cost much in performance (but maybe I am wrong here...). If journal
On 11/19/06, Ran <[EMAIL PROTECTED]> wrote:
I think I didn't explain my question well enough.
I know all what you wrote about transactions. The undo functionality I am
looking for is over _several_ transactions.
Does nested transactions do what you want?
--
Ran wrote:
I think I didn't explain my question well enough.
I know all what you wrote about transactions. The undo functionality I am
looking for is over _several_ transactions.
I just wonder if it is possible to twist sqlite to keep the journals
created
during transactions (so to store them
I think I didn't explain my question well enough.
I know all what you wrote about transactions. The undo functionality I am
looking for is over _several_ transactions.
I just wonder if it is possible to twist sqlite to keep the journals created
during transactions (so to store them just before th
On 11/18/06, Ran <[EMAIL PROTECTED]> wrote:
The way the undo-redo is described in the wiki involves triggers to insert
the information of the change in each table to other table which logs the
changes. This will have a price in performance. It also complicates things
when triggers are already use
The way the undo-redo is described in the wiki involves triggers to insert
the information of the change in each table to other table which logs the
changes. This will have a price in performance. It also complicates things
when triggers are already used for other things.
So I wonder if journals
> > Upon loading a saved file into the application the database on filesystem
is
> > loaded into an ADO.Net DataSet. This is used by the application until the
> user
> > saves to disk again when all of the changes to the DataSet are saved back
to
> > the database on disk.
> >
>
> In all of the des
[EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED] wrote:
> > Hi,
> > I would like a bit of advice before starting to make changes to my
> > application.
> >
> > I've written a program in C# for personnel departments and at present all
of
> > the data is stored in memory until the user saves and then i
[EMAIL PROTECTED] wrote:
> Hi,
> I would like a bit of advice before starting to make changes to my
> application.
>
> I've written a program in C# for personnel departments and at present all of
> the data is stored in memory until the user saves and then it is written to
> disk as an XML file.
>
Hi,
I would like a bit of advice before starting to make changes to my
application.
I've written a program in C# for personnel departments and at present all of
the data is stored in memory until the user saves and then it is written to
disk as an XML file.
I'd like to switch to an embedded SQLit
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