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       Lire::Group - Base class for implementation of the group aggregator


           use Lire::Group;


       This module is the base class for implementation of the group aggregator. This aggregator
       will split the DLF 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


   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.


   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 $).

       The limit attribute can be changed by passing a $new_limit parameter.

   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.

       The sorting fields can be changed by passing a new array reference.

   group_fields( [$new_fields] )
       Returns as a reference to an array of Lire::GroupField objects the DLF fields that are
       used to group the records.

       If the $new_fields is set, the DLF fields used to group the records will be changed. This
       parameter should be a reference to an array of Lire::GroupField objects.

       Recursive function that uses a binary search to insert $item in $array using $cmp as
       comparison operator.  $first_idx and $max_idx specify the boundaries of the search.
       Search ends when $first_idx == $max_idx or when $sort_key sorts at or before $first_idx or
       at or after $max_idx


        Lire::ReportSpec(3pm), Lire::GroupField(3pm),


         Francis J. Lacoste <>
         Wolfgang Sourdeau <>


       $Id:,v 1.36 2006/07/23 13:16:29 vanbaal Exp $


       Copyright (C) 2001-2004 Stichting LogReport Foundation

       This file is part of Lire.

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       General Public License as published by the Free Software Foundation; either version 2 of
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