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dbix::dbstag::constraint(3pm) [debian man page]

DBIx::DBStag::Constraint(3pm)				User Contributed Perl Documentation			     DBIx::DBStag::Constraint(3pm)

NAME
DBIx::DBStag::Constraint - recursive structure for representing query constraints SYNOPSIS
DESCRIPTION
A constraint is a recursive structure for representing query constraints; AND --- x=1 ---- OR --- y>2 ----- boolfunc(z) A constraint is either a bool (AND, OR, NOT) with >0 children, or it can be a leaf node representing an atomic constraint the constraint corresponds to a SQLTemplate option block; eg [ name LIKE &name& ] [ name => &name& ] [ start > &min_start& ] [ start => &start& ] [ somefunc(&x&) ] [ somefunc(&x&, &y&) ] [ somefunc(t.col, &x&, &y&) => &z& ] the constraint consists of an operator (represented by => in the option block). If no => is present, then it is a simple variable binding. A constraint can consist of multiple variable bindings WEBSITE
<http://stag.sourceforge.net> AUTHOR
Chris Mungall <cjm@fruitfly.org> COPYRIGHT
Copyright (c) 2003 Chris Mungall This module is free software. You may distribute this module under the same terms as perl itself perl v5.12.4 2011-10-14 DBIx::DBStag::Constraint(3pm)

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HTML::FormFu::Constraint::CallbackOnce(3pm)		User Contributed Perl Documentation	       HTML::FormFu::Constraint::CallbackOnce(3pm)

NAME
HTML::FormFu::Constraint::CallbackOnce - Code Callback Constraint SYNOPSIS
$form->constraint({ type => 'CallbackOnce', name => 'foo', callback => &sfoo, ); sub foo { my ( $value, $params ) = @_; # return true or false } DESCRIPTION
Unlinke the HTML::FormFu::Constraint::Callback, this callback is only called once, regardless of how many values are submitted. The first argument passed to the callback is the submitted value for the associated field; this may be a single value or an arrayref of value. The second argument passed to the callback is a hashref of name/value pairs for all input fields. This constraint doesn't honour the "not()" value. METHODS
callback Arguments: &sub_ref SEE ALSO
Is a sub-class of, and inherits methods from HTML::FormFu::Constraint HTML::FormFu AUTHOR
Carl Franks "cfranks@cpan.org" LICENSE
This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2012-01-23 HTML::FormFu::Constraint::CallbackOnce(3pm)

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