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

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

✨ RDF::Query::Algebra::NamedGraph ✨

okay bestie, gather round 💖 this is the manual page for RDF::Query::Algebra::NamedGraph (which is filed under RDF::Q...edGraph(3pm) in the User Contributed Perl Documentation, because apparently file names have a character limit and it chose violence 💀). It's the algebra class for NamedGraph patterns — like, the vibes-holding container that says "this lil pattern lives inside this graph." no cap.

🌸 NAME 🌸

RDF::Query::Algebra::NamedGraph — the algebra class for NamedGraph patterns. it's giving "pattern, but make it scoped to a named graph." iconic. 👑

💫 VERSION 💫

This doc is describing RDF::Query::Algebra::NamedGraph version 2.919. yes, that's the real number, we don't round up in this house. ✨

🎀 METHODS 🎀

so real talk: on top of everything listed below, this class also inherits a whole bunch of methods from the RDF::Query::Algebra class. free stuff, we love to see it 🫶

  • new ( $graph, $pattern ) — hands you back a brand-new NamedGraph structure. give it a graph and a pattern and boom, you're in business. 💅
  • construct_args — returns a list of arguments that, if you feed them straight back into this class' constructor, give you an exact clone of this algebra pattern. it's basically the "duplicate me" cheat code. 🦋
  • graph — returns the graph node of the named graph expression. that's the "which graph" part of the whole situation.
  • pattern — returns the graph pattern of the named graph expression. that's the "what's inside" part.
  • quads — returns a list of the quads that belong to this NamedGraph. quads!! not triples!! the fourth element said hi 😭
  • sse — returns the SSE string for this algebra expression.
  • explain — returns a string serialization of the algebra, the kind you'd actually want to stare at on the command line. it's the glamour version, for display. 💖
  • as_sparql — returns the SPARQL string for this algebra expression. turn it back into SPARQL, slay.
  • as_hash — returns the query as a nested set of plain data structures, zero objects involved. just raw data, no baggage. no cap.
  • as_spin ( $model ) — adds statements to the given model so this algebra object gets represented in the SPARQL Inferencing Notation (<http://www.spinrdf.org/>). yes, SPIN, like the thing that spins, but for RDF. 🌀
  • type — returns the type of this algebra expression.
  • referenced_variables — returns a list of the variable names that get used in this algebra expression.
  • potentially_bound — returns a list of the variable names used in this algebra expression that are gonna bind values while it's executing. "potentially" is doing a lot of heavy lifting in that sentence and we respect it. ✨
  • definite_variables — returns a list of the variable names that are definitely bound after this algebra expression gets evaluated. no maybe, no perhaps, just bound. periodt.
  • qualify_uris ( \%namespaces, $base_uri ) — returns a fresh algebra pattern where every referenced Resource node that's representing a QName (ns:local) gets qualified using the %namespaces you passed in. glow-up for your URIs. 💅
  • check_duplicate_blanks — returns true when blank nodes are respecting the SPARQL rule of no blank-label re-use across BGPs. and if they're not? it throws an RDF::Query::Error::QueryPatternError exception at you. 🚨
bestie, fr fr, watch out for that last one — check_duplicate_blanks doesn't just quietly return false when the blank-label rule is broken, it throws. so wrap it or handle it, or the exception will find you. 💀

👑 AUTHOR 👑

Gregory Todd Williams <gwilliams@cpan.org> — thank you for your service, king 🫡

and that's the whole page, bestie!! 🌈 this doc was generated for perl v5.40.1, dated 2025-08-18, and it's the RDF::Q...edGraph(3pm) page from the User Contributed Perl Documentation. go forth and name your graphs. mwah 💖🎀🧚

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