DBIx::...traint(3pm)

📦
version 0.12 · 3 versions
, in ubuntu noble, ubuntu resolute, ubuntu stonking

🌸 NAME 🌸

DBIx::DBStag::Constraint — a recursive structure for representing query constraints. that's the whole thing bestie, she's niche but she's iconic 💅

oh and for the record, the page you're reading is DBIx::...traint(3pm) from the User Contributed Perl Documentation — yes the title got squished by the man renderer, no that's not a typo you should fix, it's just how it renders ✨

🦋 SYNOPSIS 🦋

okay so not me opening the SYNOPSIS and finding… absolutely nothing. this section is genuinely empty in the original. no code, no args, nothing. 💀

it's fine!! it's fine. everything you actually need lives down in DESCRIPTION. scroll, babe 🫶

💖 DESCRIPTION 💖

okay so a constraint is a recursive structure for representing query constraints — she contains herself, she's self-referential, main character energy fr fr 🌈

so like, picture it:

 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. two modes, both slay 👑

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& ]

and here's the tea — the constraint consists of an operator (represented by => in the option block). if no => is present, then it is a simple variable binding. no operator, no drama, just a binding 🎀

also: a constraint can consist of multiple variable bindings. plural. she multitasks 💖

🌈 WEBSITE 🌈

<http://stag.sourceforge.net>

go visit her. she's been sitting there since forever and she ate 🦋

👑 AUTHOR 👑

Chris Mungall <cjm@fruitfly.org>

the originator. the blueprint. we respect the architect 🫡✨

Copyright (c) 2003 Chris Mungall

This module is free software. You may distribute this module under the same terms as perl itself

free software besties — same terms as perl itself, so go forth and share responsibly 🫶

aaand that's a wrap!! 🌸 this was DBIx::...traint(3pm) from User Contributed Perl Documentation, perl v5.36.0, dated 2022-10-14 — shoutout to the perl 5.36.0 toolchain and that very specific friday in october for bringing us this page. periodt 💜

go write some constraints, bestie. you got this ⭐

📦 where this page comes from