Release 3.1.7

• Update grammar for ExprEmbTP and ExprVarOrTerm.
• Account for embedded triples in isomorphism result tests.
• Pass options from evaluate to apply, and use for setting an ordered_by option when evaluating order terms, as comparison are different for order and filter.
• Improve Compare operator (and uses) to better support RDF-star semantics.

Release 3.1.6

SPARQL-star Annotation changes.

• Update RDF*/SPARQL* => RDF-star/SPARQL-star.
• Align grammar with SPARQL-star spec.
• Add support for embedded triples in VALUES.
• Remove special support for BIND and embeddded triples.
• Add support for isTriple, Triple, Subject, Predicate, and Object builtin operators.
• Construct with embedded triples.
• Add EmbTP to PrimaryExpression.
• Compare statements for sorting.
• Bind variables which are patterns in extend.
• Add EARL report for RDF-star, and include RDF-star in DOAP implements.

Release 3.1.5

• Fix problem with dropped :pattern on :Object production.
• Ruby 3.0 compatibility:
  • Update dependency on sparql-client and run CI on Ruby 3.0.
  • FIx argument counting in some aggregate operators.
  • Argument counting in leftjoin operator.
  • Normalize options calling sequences.

Release 3.1.4

• Update cast to datatype based on XPath 3.1 https://www.w3.org/TR/xpath-functions/#casting-to-string
• Make Query::Pattern#executable? return true.
• Import some extensions from rdf-n3.
• Query#optimize! must preserve graph_name.
• For SPARQL*:
  • Update result formats for JSON and XML to use "subject", "predicate", and "object" for embedded triples, instead of "s", "p", and "o", as is becoming normal behavior.
  • Add proposed CSV and TSV formats for embedded triples.
  • Support {| ... |} annotations in CONSTRUCT and WHERE.
• Escape nl, tab, and cr in TSV results.
• Use logger instead of built-in debug output.
• Fix setting port to run on in sparql CLI.

Release 3.1.3

• When extending RDF::Query#optimize!, call aliased method after reverting patterns to not use lexical shortcuts, and preserve pattern options (e.g., :optional).
• Fix some documentation examples where native float should be interpreted as an xsd:double, not xsd:decimal.
• Reduce overhead in loading SXP.
• In Sinatra::SPARQL, only include ::LinkedData if it is present.

Release 3.1.2

• Bump dependency on EBNF gem to 2.0.
• Don't redefine Array#dup, but rather define #deep_dup for cases that require it, mostly for expression optimization. Fixes #35.

Release 3.1.1

WARNING this issue introduced a problem with Array#dup and has been yanked. Use the 3.1.2 version.

Significate updates:

• Support for query optimization

• Provisional support for SPARQL*.

• When grouping solutions, don't create a solution if there are any expressions, otherwise (not grouping), return a single solution binding aggregated variables.

  The principle is that "aggregate, no group-by => one row always", "aggregate, with group-by => same number of rows as the group-by" for empty and no-empty matching.

  See w3c/rdf-tests#61

• SPARQL*

  • Parses SPARQL* expressions.
  • In Algebra::Extend, bind the solution to the value if the value is a pattern.
  • Define result formats when solutions have embedded triples (based on RDF4J).

• Query optimization:

  • Implement query optimization (such as it is) and run optimized queries when running specs.
  • Update method signature of #optimize and #optimize! with **options to be compatible with that from RDF::Query.

Release 3.1.0

• Updates for 3.1 to cleanup calling sequences.
• Update SSE reference in README.
• Depend on native Varaible#to_s
• Update for native support of non-distinguished variables and changes in SSE serialization.
• Account for change to inf and NaN representation in spx.
• Use CGI.encode/decode instead of URI.escape/unescape.
• Fix some definitions of #execute for Insert and Delete, which should use keyword arguments for solutions.

Release 2.2.1

• Fix bug where TripleBlock after Path is lost.
• In Rack Content Negotiation, pass headers on to error handler.

Release 2.1.0

• Update miniumum ruby version to 2.2.2.
• Fix terminal matching of various terminals that include whitespace, including "INSERT DATA". Fixes #24.
• Use Solution#to_h in favor of the deprecated Solution#to_hash (For RDF.rb 2.2).
• When calling RDF::Query.new with a Solution, append a hash for options, to work around a problem with implicit hash conversion of the solution because of Statement#to_hash. This can be removed when that goes away (For RDF.rb 2.2).