| ORDB-CPANMeta documentation | view source | Contained in the ORDB-CPANMeta distribution. |
ORDB::CPANMeta - An ORLite-based ORM Database API
TO BE COMPLETED
TO BE COMPLETED
my $string = Foo::Bar->dsn;
The dsn accessor returns the dbi connection string used to connect
to the SQLite database as a string.
my $handle = Foo::Bar->dbh;
To reliably prevent potential SQLite deadlocks resulting from multiple connections in a single process, each ORLite package will only ever maintain a single connection to the database.
During a transaction, this will be the same (cached) database handle.
Although in most situations you should not need a direct DBI connection
handle, the dbh method provides a method for getting a direct
connection in a way that is compatible with ORLite's connection
management.
Please note that these connections should be short-lived, you should never hold onto a connection beyond the immediate scope.
The transaction system in ORLite is specifically designed so that code using the database should never have to know whether or not it is in a transation.
Because of this, you should never call the ->disconnect method on the database handles yourself, as the handle may be that of a currently running transaction.
Further, you should do your own transaction management on a handle provided by the <dbh> method.
In cases where there are extreme needs, and you absolutely have to
violate these connection handling rules, you should create your own
completely manual DBI->connect call to the database, using the connect
string provided by the dsn method.
The dbh method returns a DBI::db object, or throws an exception on
error.
The selectall_arrayref method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction.
It takes the same parameters and has the same return values and error behaviour.
The selectall_hashref method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction.
It takes the same parameters and has the same return values and error behaviour.
The selectcol_arrayref method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction.
It takes the same parameters and has the same return values and error behaviour.
The selectrow_array method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction.
It takes the same parameters and has the same return values and error behaviour.
The selectrow_arrayref method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction.
It takes the same parameters and has the same return values and error behaviour.
The selectrow_hashref method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction.
It takes the same parameters and has the same return values and error behaviour.
The prepare method is a direct wrapper around the equivalent
DBI method, but applied to the appropriate locally-provided connection
or transaction
It takes the same parameters and has the same return values and error behaviour.
In general though, you should try to avoid the use of your own prepared statements if possible, although this is only a recommendation and by no means prohibited.
# Get the user_version for the schema
my $version = Foo::Bar->pragma('user_version');
The pragma method provides a convenient method for fetching a pragma
for a datase. See the SQLite documentation for more details.
ORDB::CPANMeta is based on ORLite 1.22 and ORLite::Mirror 1.15.
Documentation created by ORLite::Pod 0.06.
For general support please see the support section of the main project documentation.
Adam Kennedy <adamk@cpan.org>
Copyright 2009 Adam Kennedy.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included with this module.
| ORDB-CPANMeta documentation | view source | Contained in the ORDB-CPANMeta distribution. |