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Index of /FSS-BCZ/root/sys/dev/char/4:61/subsystem/tty18/power
Index of /FSS-BCZ/root/sys/dev/char/4:61/subsystem/tty18/power
9 lm_J 2@q1h
laa*j"T?q)F =head1 NAME
DBD::File::HowTo - Guide to create DBD::File based driver
=head1 SYNOPSIS
perldoc DBD::File::HowTo
perldoc DBI
perldoc DBI::DBD
perldoc DBD::File::Developers
perldoc DBI::DBD::SqlEngine::Developers
perldoc DBI::DBD::SqlEngine
perldoc SQL::Eval
perldoc DBI::DBD::SqlEngine::HowTo
perldoc SQL::Statement::Embed
perldoc DBD::File
perldoc DBD::File::HowTo
perldoc DBD::File::Developers
=head1 DESCRIPTION
This document provides a step-by-step guide, how to create a new
C based DBD. It expects that you carefully read the L
documentation and that you're familiar with L and had read and
understood L.
This document addresses experienced developers who are really sure that
they need to invest time when writing a new DBI Driver. Writing a DBI
Driver is neither a weekend project nor an easy job for hobby coders
after work. Expect one or two man-month of time for the first start.
Those who are still reading, should be able to sing the rules of
L.
Of course, DBD::File is a DBI::DBD::SqlEngine and you surely read
L before continuing here.
=head1 CREATING DRIVER CLASSES
Do you have an entry in DBI's DBD registry? For this guide, a prefix of
C is assumed.
=head2 Sample Skeleton
package DBD::Foo;
use strict;
use warnings;
use vars qw(@ISA $VERSION);
use base qw(DBD::File);
use DBI ();
$VERSION = "0.001";
package DBD::Foo::dr;
use vars qw(@ISA $imp_data_size);
@ISA = qw(DBD::File::dr);
$imp_data_size = 0;
package DBD::Foo::db;
use vars qw(@ISA $imp_data_size);
@ISA = qw(DBD::File::db);
$imp_data_size = 0;
package DBD::Foo::st;
use vars qw(@ISA $imp_data_size);
@ISA = qw(DBD::File::st);
$imp_data_size = 0;
package DBD::Foo::Statement;
use vars qw(@ISA);
@ISA = qw(DBD::File::Statement);
package DBD::Foo::Table;
use vars qw(@ISA);
@ISA = qw(DBD::File::Table);
1;
Tiny, eh? And all you have now is a DBD named foo which will be able to
deal with temporary tables, as long as you use L. In
L environments, this DBD can do nothing.
=head2 Start over
Based on L