PICA::Source - Data source that can be queried for PICA+ records

  my $server = PICA::Source->new(
      SRU => "http://my.server.org/sru-interface.cgi"
  );
  my $record = $server->getPPN('1234567890');
  $server->cqlQuery("pica.tit=Hamster")->count();

  # Get connection details from a config file
  $store = PICA::Source->new( config => "myconf.conf" );

  $result = $server->cqlQuery("pica.tit=Hamster", Limit => 15 );
  $result = $server->z3950Query('@attr 1=4 microformats');

  $record = $server->getPPN("1234567890");

Instead or in addition to SRU you can use Z39.50, PSI, and unAPI (experimental).

Create a new Server. You can specify an SRU interface with SRU, a Z39.50 server with Z3950, an unAPI base url with unAPI or a raw PICA PSI interface with PSI. Optional parameters include user and password for authentification. If you provide a config parameter, configuration parameters will read from a file or from the file specified with the PICASOURCE environment variable or from the file pica.conf in the current directory.

Get a record specified by its PPN. Returns a PICA::Record object or undef. Only available for source APIs SRU, unAPI, and PSI. You should check whether the returned object is empty or not. On error the special variable $@ is set.

Perform a CQL query and return the PICA::XMLParser object that was used to parse the resulting records. You can pass an existing Parser or parser parameters as listed at PICA::Parser. Only available for API type SRU.

Perform a Z39.50 query via ZOOM. The resulting records are read with a PICA::PlainParser that is returned.

Search a source by IKT (search index) and search term. The current implementation only returns the first record. This method does only work for PSI source.

Returns a link to the result list of a search by IKT or undef. Croaks if no PSI source has been defined.

Returns a link to the record view of a record given by PPN. Croaks if no PSI source has been defined.

Return the base URL (if specified) or the empty string.

The following methods are based on CGI::Utils by Don Owens.

Returns the fully URL-encoded version of the given string. It does not convert space characters to '+' characters.

Returns the fully URL-decoded version of the given string.

Jakob Voss <jakob.voss@gbv.de>

Copyright (C) 2007-2009 by Verbundzentrale Goettingen (VZG) and Jakob Voss

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available.