NAME
Catalyst::Model::DBI::SQL::Library - SQL::Library DBI Model Class
SYNOPSIS
# use the helper
create model DBI::SQL::Library DBI::SQL::Library dsn user password
# lib/MyApp/Model/DBI/SQL/Library.pm
package MyApp::Model::DBI::SQL::Library;
use base 'Catalyst::Model::DBI::SQL::Library';
__PACKAGE__->config(
dsn => 'dbi:Pg:dbname=myapp',
password => '',
user => 'postgres',
options => { AutoCommit => 1 },
sqldir => 'root/sql2' #optional, will default to $c->path_to( 'root/sql' ),
sqlcache => 1 #can only be used when queries are loaded from file i.e. via scalar passed to load
sqlcache_use_mtime => 1 #will use modification time of the file to determine when to refresh the cache, make sure sqlcache = 1
);
1;
my $model = $c->model( 'DBI::SQL::Library' );
my $sql = $model->load( 'something.sql' ) ;
#or my $sql = $model->load( [ <FH> ] );
#or my $sql = $model->load( [ $sql_query1, $sql_query2 ] ) )
my $query = $sql->retr( 'some_sql_query' );
#or my $query = $model->sql->retr( 'some_sql_query );
$model->dbh->do( $query );
#do something else with $sql ...
DESCRIPTION
This is the "SQL::Library" model class. It provides access to
"SQL::Library" via sql accessor. Additional caching options are provided
for increased performance via sqlcache and sqlcache_use_mtime, these
options can only be used when sql strings are stored within a file and
loaded by using a scalar value passed to load. The load and parse phase
is then bypassed if cached version of the file is found.
The use of these options can result in more memory being used but faster
access to query data when running under persistent environment such as
mod_perl or FastCGI. When sqlcache_use_mtime is in use, last
modification time of the file is being referenced upon every cache
check. If the modification time has changed only then query file is
re-loaded. This should be much faster then re-creating the SQL::Library
instance on every load. Please refer to the "SQL::Library" for more
information.
METHODS
new Initializes database connection
$self->load
Initializes "SQL::Library" instance
$self->dbh
Returns the current database handle.
$self->sql
Returns the current "SQL::Library" instance
SEE ALSO
Catalyst, DBI
AUTHOR
Alex Pavlovic, "alex.pavlovic@taskforce-1.com"
COPYRIGHT
This program is free software, you can redistribute it and/or modify it
under the same terms as Perl itself.