RDF::Q...roject(3pm)

📦
version 2.919 · 10 versions
, in ubuntu resolute, ubuntu stonking

🌸 NAME 🌸

okay bestie, meet RDF::Query::Algebra::Project 💅 it's the algebra class for projection — yes, that whole "which variables are we even showing you" vibe. it lives in the User Contributed Perl Documentation section, so you know it's giving community-made, hand-crafted, iconic energy 🫶

✨ VERSION ✨

this doc is describing RDF::Query::Algebra::Project version 2.919. write it down, don't be that girl who asks later 🙈

🎀 METHODS 🎀

lowkey important: on top of everything listed below, this class also inherits methods from the RDF::Query::Algebra class. so don't come for me if your fave method isn't here — check the parent, iykyk ✨

  • new ( $pattern, \@vars_and_exprs ) — makes you a shiny new Project structure. feed it a pattern and an arrayref of vars-and-exprs and boom, you've got one 🌈
  • construct_args — gives you back a list of arguments that, if you pass them to this class' constructor, will clone this algebra pattern for you. it's giving copy-paste but make it classy 💖
  • pattern — hands you back the pattern to be sorted. yes that's what it says, no i will not elaborate, the source said it first 💀
  • vars — returns the vars that we're projecting to. the chosen ones. the main characters 👑
  • sse — returns the SSE string for this algebra expression, fr fr
  • as_sparql — returns the SPARQL string for this algebra expression. so you can actually speak query, periodt 🔥
  • as_hash — returns the query as a nested set of plain data structures. no objects allowed, we're going raw 🍓
  • as_spin ( $model ) — adds statements to the given model so it can represent this algebra object in the SPARQL Inferencing Notation (http://www.spinrdf.org/) 🦋
  • type — returns the type of this algebra expression. identity check bestie, who are you really 💅
  • referenced_variables — returns a list of the variable names used in this algebra expression
  • bind_variables ( \%bound ) — returns a new algebra pattern where the variables named in %bound got swapped out for their corresponding bound values. glow-up via substitution ✨
  • potentially_bound — returns a list of the variable names used in this algebra expression that will bind values during execution. maybe. potentially. it's the "we'll see" of variable lists 😭
  • definite_variables — returns a list of the variable names that are 100% gonna be bound after this algebra expression gets evaluated. no cap, these ones are locked in 🔥
  • is_solution_modifier — returns true if this node is a solution modifier. vibe check on the node itself 🌈

👑 AUTHOR 👑

this absolute legend wrote it:

Gregory Todd Williams <gwilliams@cpan.org>

give them their flowers, they earned them 💐

and that's the whole page bestie 🫶 this was perl v5.40.1, dated 2025-08-18 — so yes, fresh-ish, and it's literally titled RDF::Q...roject(3pm) on the tin because manpage headers love to truncate mid-word like that 💀 the way that header just gave up on spelling Project... anyway. go project some variables. slay 💅✨

📦 where this page comes from