Data::FormValidator::ConstraintsFactory - Module to create constraints for HTML::FormValidator. use Data::FormValidator::ConstraintsFactory qw( :set :bool ); constraints => { param1 => make_or_constraint( make_num_set_constraint( -1, ( 1 .. 10 ) ), make_set_constraint( 1, ( 20 .. 30 ) ), ), province => make_word_set_constraint( "AB QC ON TN NU" ), bid => make_range_constraint( 1, 1, 10 ), } This module contains several functions which returns closures that can be used for constraints. Those constraints are available by using the ":bool" tag.

make_not_constraint( $c1 )
This will create a constraint that will return the negation of the result of constraint $c1.

make_or_constraint( @constraints )
This will create a constraint that will return the result of the first constraint that return an non false result.

make_and_constraint( @constraints )
This will create a constraint that will return the result of the first constraint that return an non false result only if all constraints returns a non-false results. Those constraints are available by using the ":set" tag.

make_set_constraint( $res, @elements )
This will create a constraint that will return $res if the value is one of the @elements set, or the negation of $res otherwise. The "eq" operator is used for comparison.

make_num_set_constraint( $res, @elements )
This will create a constraint that will return $res if the value is one of the @elements set, or the negation of $res otherwise. The "==" operator is used for comparison.

make_word_set_constraint( $res, $set )
This will create a constraint that will return $res if the value is a word in $set, or the negation of $res otherwise.

make_cmp_set_constraint( $res, $cmp, @elements )
This will create a constraint that will return $res if the value is one of the @elements set, or the negation of $res otherwise. $cmp is a function which takes two argument and should return true or false depending if the two elements are equal. Those constraints are available by using the ":num" tag.

make_clamp_constraint( $res, $low, $high )
This will create a constraint that will return $res if the value is between $low and $high bounds included or its negation otherwise.

make_lt_constraint( $res, $bound )
This will create a constraint that will return $res if the value is lower than $bound, or the negation of $res otherwise.

make_le_constraint( $res, $bound )
This will create a constraint that will return $res if the value is lower or equal than $bound, or the negation of $res otherwise.

make_gt_constraint( $res, $bound )
This will create a constraint that will return $res if the value is greater than $bound, or the negation of $res otherwise.

make_ge_constraint( $res, $bound )
This will create a constraint that will return $res if the value is greater or equal than $bound, or the negation of $res otherwise.

make_length_constraint($max_length)
This will create a constraint that will return true if the value has a length of less than or equal to $max_length Data::FormValidator(3) Author: Francis J. Lacoste <francis.lacoste@iNsu.COM> Maintainer: Mark Stosberg <mark@summersault.com> Copyright (c) 2000 iNsu Innovations Inc. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms as perl itself.