view release on metacpan or  search on metacpan

lib/Bio/Das/ProServer/SourceAdaptor/Transport/file.pm  view on Meta::CPAN

 $filetransport->query(qq(field1 lceq 'value'));
 $filetransport->query(qq(field3 like '%value%'));
 $filetransport->query(qq(field0 = 'value' && field1 = 'value'));
 $filetransport->query(qq(field0 = 'value' and field1 = 'value'));
 $filetransport->query(qq(field0 = 'value' and field1 = 'value' and field2 = 'value'));

 "OR" compound queries not (yet) supported

=head2 last_modified - machine time of last data change

  $dbitransport->last_modified();

=head2 DESTROY - object destructor - disconnect filehandle

  Generally not directly invoked, but if you really want to - 

  $filetransport->DESTROY();

=head1 DIAGNOSTICS

Run ProServer with the -debug flag.

=head1 CONFIGURATION AND ENVIRONMENT

Configured as part of each source's ProServer 2 INI file:

  [myfile]
  ... source configuration ...
  transport = file
  filename  = /data/features.tsv
  ; optional values:
  unique    = 1
  cache     = 1
  comment   = ^#
  separator = \t

  If specified, query results can be treated as unique, preventing a full file
  parse when the first match is found. The default is to find all matches.

  If specified, file contents may be pre-cached in memory. The default is to
  re-read the file for every query.

  The field separator may be specified as a regular expression. The default is
  /\t/.

  Comments can be detected and ignored by providing a regular expression. There
  is no default.

=head1 DEPENDENCIES

=over

=item L<File::stat|File::stat>

=item L<Bio::Das::ProServer::SourceAdaptor::Transport::generic|Bio::Das::ProServer::SourceAdaptor::Transport::generic>

=back

=head1 INCOMPATIBILITIES

=head1 BUGS AND LIMITATIONS

Only AND compound queries are supported.

=head1 AUTHOR

Roger Pettett <rmp@sanger.ac.uk> and Andy Jenkinson <aj@ebi.ac.uk>

=head1 LICENSE AND COPYRIGHT

Copyright (c) 2008 The Sanger Institute and EMBL-EBI

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.  See DISCLAIMER.txt for
disclaimers of warranty.

=cut