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.\"
.IX Title "Group 3pm"
.TH Group 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::Group \- Base class for implementation of the group aggregator
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Lire::Group;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module is the base class for implementation of the group
aggregator. This aggregator will split the \s-1DLF\s0 records in groups having
the same key. The key is made up of one or more several non-numerical
fields. The number of keys to keep in the report can be configured
through the limit attribute. The keys can also be sorted using the
sort attribute.
.SH "CONSTRUCTOR"
.IX Header "CONSTRUCTOR"
.ie n .SS "new( %params )"
.el .SS "new( \f(CW%params\fP )"
.IX Subsection "new( %params )"
Creates a new instance of a group aggregator. In addition to the
normal report operator parameters, the limit attribute can be
initialized at creation time.
.SH "METHODS"
.IX Header "METHODS"
.SS "limit( [$new_limit] )"
.IX Subsection "limit( [$new_limit] )"
Returns the number of keys to display in the report. This can be an
integer or the name of one of the report specification parameter (when
it starts by $).
.PP
The limit attribute can be changed by passing a \f(CW$new_limit\fR parameter.
.SS "sort_fields( [$new_sort_fields] )"
.IX Subsection "sort_fields( [$new_sort_fields] )"
Returns fields and/or operator values which are going to be used to
sort the entries generated by this aggregator. This is an array
reference containing group field names and/or operator's name.
.PP
The sorting fields can be changed by passing a new array reference.
.SS "group_fields( [$new_fields] )"
.IX Subsection "group_fields( [$new_fields] )"
Returns as a reference to an array of Lire::GroupField objects the \s-1DLF\s0
fields that are used to group the records.
.PP
If the \f(CW$new_fields\fR is set, the \s-1DLF\s0 fields used to group the records
will be changed. This parameter should be a reference to an array of
Lire::GroupField objects.
.SS "binary_insert"
.IX Subsection "binary_insert"
Recursive function that uses a binary search to insert 
\&\f(CW$item\fR in \f(CW$array\fR using \f(CW$cmp\fR as comparison operator.
\&\f(CW$first_idx\fR and \f(CW$max_idx\fR specify the boundaries of the search.
Search ends when \f(CW$first_idx\fR == \f(CW$max_idx\fR or when \f(CW$sort_key\fR
sorts at or before \f(CW$first_idx\fR or at or after \f(CW$max_idx\fR
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.Vb 2
\& Lire::ReportSpec(3pm), Lire::GroupField(3pm),
\& Lire::ReportOperator(3pm)
.Ve
.SH "AUTHORS"
.IX Header "AUTHORS"
.Vb 2
\&  Francis J. Lacoste <flacoste@logreport.org>
\&  Wolfgang Sourdeau <wsourdeau@logreport.org>
.Ve
.SH "VERSION"
.IX Header "VERSION"
\&\f(CW$Id:\fR Group.pm,v 1.36 2006/07/23 13:16:29 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.