On Mon, 24 Jun 2013 17:01:51 +0200, "H.Merijn Brand"
<h.m.br...@xs4all.nl> wrote:
> In the git branch "f_dir-ref" (a wrong name now, as we changed some
> things in the development process), you can find a new extension
>
> DBD::File now understands a new attribute f_dir_search:
>
> f_dir_search
>
> This optional attribute can be set to pass a list of folders to also
> find existing tables. It will not be used to create new files.
>
> f_dir_search => [ "/data/bar/csv", "/dump/blargh/data" ],
In a new branch on DBI, I have extended that idea (not enough tests and
no documentation yet) with hash entries
f_dir_search => [
{ f_dir => "sandbox",
f_schema => "testfiles",
},
{ f_dir => "/data/reference/iso-1234/csv",
f_schema => "iso1234",
f_readonly => 1,
},
],
f_schema and f_dir work, but as f_readonly is not (yet) been
implemented (like this), it does not.
> A real-world example might explain this in more detail using DBD::CSV
>
> my $dbh = DBI->connect ("dbi:CSV:", undef, undef, {
> f_schema => undef,
> f_dir => "tmp",
> f_dir_search => [ "sandbox", "/tmp" ],
> f_ext => ".csv/r",
> f_lock => 2,
> f_encoding => "utf8",
>
> RaiseError => 1,
> PrintError => 1,
> FetchHashKeyName => "NAME_lc",
> }) or die "$DBI::errstr\n";
>
> This will set the default folder for CSV files to be located in the
> folder "tmp". This folder will also be used for creating tables.
>
> When opening a handle to an already existing table, and that table's
> file(s) cannot be found in the folder indicated by "f_dir", the folders
> in the "f_dir"search" (if present) will be searched for the files
> needed to open the table.
>
> my $sth = $dbh->prepare ("select * from foo");
>
> will, using the above example, search for
>
> tmp/foo.csv
> sandbox/foo.csv
> /tmp/foo.csv
>
> The DBI test suite tests this option in t/51dbm_file.t
>
> If people have feedback, it would be appreciated. Both possitive and
> negative. If no objections exist, I'd like to merge this branch into
> master and request a new release, so we can release DBD::CSV shortly
> after
--
H.Merijn Brand http://tux.nl Perl Monger http://amsterdam.pm.org/
using perl5.00307 .. 5.19 porting perl5 on HP-UX, AIX, and openSUSE
http://mirrors.develooper.com/hpux/ http://www.test-smoke.org/
http://qa.perl.org http://www.goldmark.org/jeff/stupid-disclaimers/
