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.\" ========================================================================
.\"
.IX Title "ExtendedSchema 3pm"
.TH ExtendedSchema 3pm "2006-07-23" "Lire 2.1.1" "LogReport's Lire Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
Lire::ExtendedSchema \- Adds fields to each DLF records of a base schema
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  my $schema = Lire::DlfSchema::load_schema( \*(Aqwww\-robot\*(Aq );
\&  my $ext_fields = $schema\->extended_fields();
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
A Lire::ExtendedSchema defines a DlfSchema which adds fields to each
records of a base DlfSchema. The values of the extended fields are
usually computed from values based on the values of the fields in the
base Dlf record. These values aren't written by Lire::DlfConverters,
but by Lire::DlfAnalysers (or usually a Lire::DlfCategoriser).
.SS "\fIbase()\fP"
.IX Subsection "base()"
Returns the Lire::DlfSchema object for which this schema's records are
an extension.
.ie n .SS "can_join_schema( $schema )"
.el .SS "can_join_schema( \f(CW$schema\fP )"
.IX Subsection "can_join_schema( $schema )"
Returns true if \f(CW$schema\fR can be joined with this schema. For an
ExtendedSchema, this will be true only when \f(CW$schema\fR is an
ExtendedSchema which shares the same same than this schema.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fILire::DlfSchema\fR\|(3pm), \fILire::DerivedSchema\fR\|(3pm),
\&\fILire::DlfAnalyser\fR\|(3pm), \fILire::DlfCategoriser\fR\|(3pm)
.SH "AUTHOR"
.IX Header "AUTHOR"
.Vb 1
\&  Francis J. Lacoste <flacoste@logreport.org>
.Ve
.SH "VERSION"
.IX Header "VERSION"
\&\f(CW$Id:\fR ExtendedSchema.pm,v 1.24 2006/07/23 13:16:29 vanbaal Exp $
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (C) 2001 Stichting LogReport Foundation LogReport@LogReport.org
.PP
This file is part of Lire.
.PP
Lire is free software; you can redistribute it and/or modify
it under the terms of the \s-1GNU\s0 General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
.PP
This program is distributed in the hope that it will be useful,
but \s-1WITHOUT\s0 \s-1ANY\s0 \s-1WARRANTY\s0; without even the implied warranty of
\&\s-1MERCHANTABILITY\s0 or \s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0.  See the
\&\s-1GNU\s0 General Public License for more details.
.PP
You should have received a copy of the \s-1GNU\s0 General Public License
along with this program (see \s-1COPYING\s0); if not, check with
http://www.gnu.org/copyleft/gpl.html.