Re: [coldsync-hackers] p5-Palm insert Record

[JD Smith <jdsmith@astro.cornell.edu>]

Andrew Arensburger wrote:
> 
> On Sat, Sep 29, 2001 at 01:50:48PM -0400, John-David Smith wrote:
> > What I'm interested in specifically is the atP "pointer to an index", and the
> > statement that subsequent record's indices are "shifted down" upon insertion.  I
> > haven't found an equivalent field in the Palm/PDB documentation (I'm pretty sure
> > it's not "offset"), and I'm not sure if it's trivially changeable.
> >
> > I'd like to be able to replicate such an insertion action which can be performed
> > on the Palm, by crafting a new PDB function "insert_Record()", which takes such
> > an index.  Inserting directly into or sorting the perl array @{$self->{records}}
> > doesn't seem to accomplish this.
> 
>         Just use new_Record() to create the record, then insert it
> into the list by hand, e.g.:
> 
>         # @{$pdb->{records}} contains A, B, C.
> 
>         $record = new_Record();
>         # Initialize $record...
> 
>         splice @{$pdb->{records}}, 1, 0, $record;
>         # @{$pdb->{records}} now contains A, New, B, C.
> 
> (this is pretty much all that append_Record() does). Of course, since
> you're modifying the master list of records, all the usual caveats
> apply: if you do this inside a
>         for (@{$pdb->{records}})
> loop, the loop may not execute the way you want. But other than that,
> it's safe. Once you write the database, the order of the records
> should be the one specified.
>         So I'm not sure what you mean when you say that inserting
> directly into the array doesn't accomplish what you want.
> 
>         It also occurs to me that perhaps you're trying to change the
> order of the records as they're stored on the Palm. If so, then the
> above probably won't help.
>         If you just add the new record on the desktop and rely on a
> sync to upload it, then it probably won't get inserted where you want,
> since ColdSync and other sync tools shouldn't care about the order of
> records. You can delete the database on the Palm, then upload it from
> the desktop, but I don't know whether that'll work.
>         Databases also have a "sort block." I gather that this allows
> you to specify the order in which the records are displayed on the
> Palm, but I've never actually run across a database with a sort block,
> so I don't know.

Hmm.. I was afraid this was the answer.  I am indeed trying to fix the
order of records as saved on the Palm, just as DmNewRecord can do. 
Simply shuffling @{$pdb->{records}} doesn't do it.  I'm beginning to
feel like it's not going to happen.  Any evidence to the contrary is
much appreciated.

JD
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