NAME

DBIx::TransactionManager - Transaction handling for database.

SYNOPSIS

RAII style transaction management:

    use DBI;
    use DBIx::TransactionManager;
    my $dbh = DBI->connect('dbi:SQLite:');
    my $tm = DBIx::TransactionManager->new($dbh);
    
    # create transaction object
    my $txn = $tm->txn_scope;
    
        # execute query
        $dbh->do("insert into foo (id, var) values (1,'baz')");
        # And you can do multiple database operations here
    
    # and commit it.
    $txn->commit;

Nested transaction usage:

    use DBI;
    use DBIx::TransactionManager;
    my $dbh = DBI->connect('dbi:SQLite:');
    my $tm = DBIx::TransactionManager->new($dbh);
    
    {
        my $txn = $tm->txn_scope;
        $dbh->do("insert into foo (id, var) values (1,'baz')");
        {
            my $txn2 = $tm->txn_scope;
            $dbh->do("insert into foo (id, var) values (2,'bab')");
            $txn2->commit;
        }
        {
            my $txn3 = $tm->txn_scope;
            $dbh->do("insert into foo (id, var) values (3,'bee')");
            $txn3->commit;
        }
        $txn->commit;
    }

DESCRIPTION

DBIx::TransactionManager is a simple transaction manager. like DBIx::Class::Storage::TxnScopeGuard.

This module provides two futures.

RAII based transaction management
Nested transaction management

If you are writing of DBIx::* or O/R Mapper, see DBIx::TransactionManager::Developers.

METHODS

my $tm = DBIx::TransactionManager->new($dbh): Creating an instance of this class. $dbh is required.
my $txn = $tm->txn_scope(%args): Get DBIx::TransactionManager::ScopeGuard's instance object.
Options for this method is only for module creators, see DBIx::TransactionManager::Developers.

DBIx::TransactionManager::ScopeGuard's METHODS

$txn->commit(): Commit the transaction.
If the $tm is in a nested transaction, TransactionManager doesn't do COMMIT at here. TM just poped transaction stack and do nothing.
$txn->rollback(): Rollback the transaction.
If the $tm is in a nested transaction, TransactionManager doesn't do ROLLBACK at here. TM just poped transaction stack and do nothing.

DBIx::TransactionManager and other transaction managers

You cannot use other transaction manager and DBIx::TransactionManager at once.

If you are using O/R mapper, you should use that's transaction management feature.

AUTHOR

Atsushi Kobayashi <nekokak _at_ gmail _dot_ com>

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.