NAME

       Lire::DerivedSchema - Defines a schema for which the records are derived from another schema

SYNOPSIS

         my $schema = Lire::DlfSchema::load_schema( 'www-user_session' );
         my $fields = $schema->fields();

DESCRIPTION

       A Lire::DerivedSchema defines a schema for which the records are computed by an analyser using the
       records of a base schema. An example of a derived schema is the www-user_session schema which computes
       session information from the records in the www schema.

   base()
       Returns the Lire::DlfSchema object from which this schema's records are derived.

   can_join_schema( $schema )
       Returns true if $schema can be joined with this schema. For a DerivedSchema, this will be true only when
       $schema is an ExtendedSchema of this schema or this schema's base. It is also possible to join the
       DerivedSchema with its base.

AUTHOR

       Francis J. Lacoste <flacoste@logreport.org>

VERSION

       $Id: DerivedSchema.pm,v 1.19 2006/07/23 13:16:28 vanbaal Exp $

COPYRIGHT

       Copyright (C) 2001, 2004 Stichting LogReport Foundation LogReport@LogReport.org

       This file is part of Lire.

       Lire is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
       License as published by the Free Software Foundation; either version 2 of the License, or (at your
       option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
       the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
       License for more details.

       You should have received a copy of the GNU General Public License along with this program (see COPYING);
       if not, check with http://www.gnu.org/copyleft/gpl.html.

Lire 2.1.1                                         2006-07-23                                 DerivedSchema(3pm)