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The Net::Z3950::ZOOM, ZOOM and Net::Z3950 modules

This distribution contains three Perl modules for the price of one. They all provide facilities for building information retrieval clients using the standard Z39.50 and SRW/U protocols, but do so using different APIs.

  • If you are new to this distribution, then you should use the ZOOM API, and ignore the others. It is the cleanest, most elegant and intuitive, and most closely follows the letter as well as the spirit of the Abstract ZOOM API

  • If you have used the old Net::Z3950 module and have to maintain an application that calls that API, then you will want to use the Net::Z3950 classes provided in this distribution, which provide an API compatible with the old module's implemented on top of the new ZOOM code.

  • You should definitely not use the Net::Z3950::ZOOM API, which is not object-oriented, and instead provides the thinnest possible layer on top of the ZOOM-C functions in the YAZ toolkit. This API exists only in order to have ZOOM API built on top of it.


To install this module, type the following:

perl Makefile.PL
make test
make install


To build Debian packages, do:

dh-make-perl --build


This module requires these other modules and libraries:

  • The YAZ toolkit for Z39.50 and SRW/U communication. This is available as a package on several platforms -- for example, Debian GNU/Linux supports "apt-get install yaz". For others, you will need to download and build the source-code, which is much more straightforward that you probably expect. You can get it from .

    NOTE THAT THE ZOOM-Perl MODULE ABSOLUTELY REQUIRES RELEASE 2.0.11 OR BETTER OF THE YAZ TOOLKIT. You need version 2.1.17 or better if you want to run clever asynchronous programs that use the END event, which did not exist prior to that release.



Copyright (C) 2005-2017 by Index Data.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.4 or, at your option, any later version of Perl 5 you may have available.