On Nov 25, 2013, at 11:08 AM, Jens Rehsack <rehs...@gmail.com> wrote:
> Let’s go - shoot:
>
> # specify most possible flags via driver flags
> $dbh = DBI->connect ("dbi:CSV:", undef, undef, {
> f_schema => undef,
> f_dir => "data",
> f_dir_search => [],
> f_ext => ".csv/r",
> f_lock => 2,
> f_encoding => "utf8",
>
> csv_eol => "\r\n",
> csv_sep_char => ",",
> csv_quote_char => '"',
> csv_escape_char => '"',
> csv_class => "Text::CSV_XS",
> csv_null => 1,
> csv_tables => {
> info => { f_file => "info.csv" }
> },
>
> RaiseError => 1,
> PrintError => 1,
> FetchHashKeyName => "NAME_lc",
> }) or die $DBI::errstr;
>
> And keep in mind, csv_tables can be more complex and there’re other
> attributes like it eg. in DBD::AnyData.
Well, how you would want to handle params would be up to you. No, they are not
great for hashes, but do-able.
db:csv?f_dir=data&f_dir_search=foo&f_dir_search=bar&f_ext=.csv/r&f_lock=2&f_encoding=utf8&csv_eol=%0D%0A&csv_sep_char=,&csv_quote_char=%22&csv_escape_char=%22&csv+class=Text::CSV_XS&csv_null=1&RaiseError=1&PrintError=1&FetchHashKeyName=NAME_lc&csv_tables=%7B%22info%22%3A%20%7B%22f_file%22%3A%22info_csv%22%7D%7D
So yeah, one would need to do some sort of parsting of nested data (JSON in the
csv_tables example here), though arrays work okay (e.g., f_dir_search).
OTOH, can you specify all this stuff in a DSN parseable by parse_dsn(), either?
But my point is not to replace the connect() API, but to create a standard of
sorts for representing connection info in a URL, to make it easier to specify
how to connect to things on the command-line. Yeah, if you want to do
everything, it will require more work, but that would be up to the code that
handles each driver, which is to say the URI subclass for a particular DBMS.
But this discussion orthogonal to my original questions, which were:
* Should I use a hierarchical scheme like JDBC? I’m leaning heavily toward this
now, just need a decent prefix, I'm thinking "dbms", e.g., "dbms:csv:foo".
* Do I have the metadata wrong for any of the DBMSes I have so far added
support for? Right now that’s just the ports they listen on by default:
https://github.com/theory/uri-db/blob/master/t/db.t#L9
Best,
David
