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.\" ========================================================================
.\"
.IX Title "First 3pm"
.TH First 3pm "2020-07-07" "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.
.if n .ad l
.nh
.SH "NAME"
Lire::First \- Lire class that implements the first operator
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
use Lire::First
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Class that implements the first operator. This operator will output
the first value appearing in its field when the \s-1DLF\s0 records are sorted
according to the \f(CW\*(C`sort_fields\*(C'\fR attribute. The default sort order is the
default timestamp sort.
.SH "METHODS"
.IX Header "METHODS"
.ie n .SS "new( %params )"
.el .SS "new( \f(CW%params\fP )"
.IX Subsection "new( %params )"
Creates a new Lire::First object. The field attribute can be
specified in the \f(CW\*(C`field\*(C'\fR parameter and the sort order can be passed
in the \f(CW\*(C`sort_fields\*(C'\fR parameter.
.SS "sort_fields( [$new_sort_fields] )"
.IX Subsection "sort_fields( [$new_sort_fields] )"
Returns the fields that are going to be used to sort the \s-1DLF\s0 records.
This a reference to an array of \s-1DLF\s0 field names.
.PP
If the \f(CW$new_sort_fields\fR parameter is set, it will be used as the new
sort order. It must be an array reference and should only contains
valid field names for the current report specification's schema.
.PP
When no sort_fields are set, the default is to use the default
timestamp field.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.Vb 2
\& Lire::ReportSpec(3pm), Lire::ReportOperator(3pm),
\& Lire::Aggregator(3pm), Lire::Aggregate(3pm), Lire::Last(3pm)
.Ve
.SH "AUTHORS"
.IX Header "AUTHORS"
.Vb 2
\&  Francis J. Lacoste <flacoste@logreport.org>
\&  Wolfang Sourdeau <wsourdeau@logreport.org>
.Ve
.SH "VERSION"
.IX Header "VERSION"
\&\f(CW$Id:\fR First.pm,v 1.15 2008/03/09 19:27:31 vanbaal Exp $
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (C) 2001\-2004 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 ANY WARRANTY\s0; without even the implied warranty of
\&\s-1MERCHANTABILITY\s0 or \s-1FITNESS FOR A PARTICULAR PURPOSE.\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.