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dpavlin |
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package WebPAC::Input::DBI; |
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use warnings; |
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use strict; |
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use WebPAC::Input; |
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use base qw/WebPAC::Common Class::Accessor/; |
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__PACKAGE__->mk_accessors(qw( |
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dsn |
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user |
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passwd |
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path |
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)); |
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use Encode; |
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use Data::Dump qw/dump/; |
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use DBI; |
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use File::Slurp; |
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=head1 NAME |
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WebPAC::Input::DBI - read data from RDBMS using DBI |
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=cut |
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=head1 FUNCTIONS |
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=head2 new |
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my $input = new WebPAC::Input::DBI( |
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dsn => 'dbi:SQLite:dbname=/dev/shm/test.sqlite', |
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user => '', |
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passwd => '', |
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path => '/path/to.sql', |
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); |
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=back |
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=cut |
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sub new { |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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my $arg = {@_}; |
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my $sql = read_file $self->path; |
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my $log = $self->_get_logger; |
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$log->debug( "dsn: ", $self->dsn ); |
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my $dbh = DBI->connect( $self->dsn, $self->user, $self->passwd, { RaiseError => 1 } ); |
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dpavlin |
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$dbh->{sqlite_unicode} = 1; |
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dpavlin |
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$log->debug( "sql ",$self->path, "\n", $sql ); |
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my $sth = $dbh->prepare( $sql ); |
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$sth->execute; |
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# XXX this should really be in fetch_rec, but DBD::SQLite doesn't return |
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# $sth->rows correctly, and we really need number of rows... |
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$self->{size} = 0; |
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while ( my $row = $sth->fetchrow_hashref ) { |
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push @{ $self->{_rec} }, $row; |
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$self->{size}++; |
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} |
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$log->info( $self->dsn, " query produced ", $self->size, " records"); |
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$self ? return $self : return undef; |
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} |
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=head2 fetch_rec |
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Return record with ID C<$mfn> from database |
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my $rec = $input->fetch_rec( $mfn, $filter_coderef ); |
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=cut |
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sub fetch_rec { |
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my ( $self, $mfn, $filter_coderef ) = @_; |
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my $rec = { '000' => [ $mfn ] }; |
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my $row = $self->{_rec}->[$mfn-1] || die "no record $mfn"; |
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foreach my $c ( keys %$row ) { |
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$rec->{$c} = [ $row->{$c} ]; |
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} |
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return $rec; |
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} |
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=head2 size |
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Return number of records in database |
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my $size = $input->size; |
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=cut |
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sub size { |
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my $self = shift; |
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return $self->{size}; |
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} |
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=head1 AUTHOR |
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
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=head1 COPYRIGHT & LICENSE |
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Copyright 2011 Dobrica Pavlinusic, All Rights Reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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=cut |
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1; # End of WebPAC::Input::DBI |
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