DESCRIPTIONClass that implements the sum operator. This operator will compute the field's sum in a group of DLF records.
It's possible to compute a weighted sum in which each value is first multiplied by the value of another DLF field.
Its also possible to express the count as a ratio of the total count for the group or table.
new( %params )Creates a new Lire::Count object. In addition to the values supported by its parents, the weight and ratio attributes will be initialized to the values specified in the %params argument.
weight( [$new_weight] )Returns the DLF field's name by which the values will be multiplied before being summed.
You can change the weight field by specifying a new name as the $new_weight parameter. Use undef to remove the use of a weighting field.
ratio([$new_ratio])Returns how the sum will be expressed. This can one of three possible values:
- Default. The absolute sum will be used.
- The sum will be expressed as a percentage of the group's sum.
- The sum will be expressed as a percentage of the table's total sum.
Francis J. Lacoste <[email protected]>
VERSION$Id: Sum.pm,v 1.17 2008/03/09 19:27:31 vanbaal Exp $
COPYRIGHTCopyright (C) 2001, 2002 Stichting LogReport Foundation [email protected]
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