NAME
DBIx::DBStag::Constraint -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
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