DESCRIPTION

The sru_z3950 Metaproxy filter transforms valid SRU GET/POST/SOAP requests to Z3950 requests, and wraps the received hit counts and XML records into suitable SRU response messages.

Multiple database elements defining the names of the accepted databases are allowed in the configuration file. Each of them must contain their own explain record, or must be empty. Notice that explain records come in SRU and Z39.50 flavors, and this filter requires the SRU version. See the ZeeReX Explain standard pages and the SRU Explain pages for more information.

All Z39.50 packages and all HTTP packages that do not resolve to one configured database name are passed unaltered to the next filters on the route.

The SRU explain operation is supported, returning either the absolute minimum required by the standard, or a full pre-defined ZeeReX explain record.

It supports the SRU searchRetrieve operation, which is transformed into successive Z3950 init, search and present requests.

The SRU scan operation is not supported.

This filter does not handle CQL-to-PQF translations. In case that the backends do not understand CQL, you need to append the cql_pqf metaproxy filter.

This module supports the following SRU extra parameters:

EXAMPLES

A typical configuration looks like this:

    <filter type="sru_z3950">
      <database name="Default">
        <explain xmlns="http://explain.z3950.org/dtd/2.0/">
          ...
        </explain>
      </database>
      <database name="Dummy">
    </filter>


   

SEE ALSO

metaproxy(1)

COPYRIGHT

Copyright (c) 2005-2008, Index Data ApS