Release 0.5.1

• Update for stems and exclusions being represented as strings.
• Allow a Shape Definition without an expression. – <S> IRI {}
• Don't merge nested ANDs.
• Don't use StemRange where Stem will do.
• Add language operator for matching lanugage tags. JSON-LD predicate is languageTag.
• Add format for shex with CLI for matching shapes.

Release 0.5.0

Updates for the announced Candidate release of ShEx 2.0:

• Update EBNF rules to avoid a labeled shapeRef. per shexSpec/shex#38.
• Updates to split nodeConstraint in to litNodeConstraint and nonLitNodeConstraint.
• Datatyped-literal validation.
• Change API to require map, and process all map entries. If focus is provided, there must be a start; focus is now an option. Note that this is a breaking change.
• Support // style regular expressions.
• Return hash of nodes referencing shape labels and results, rather than a marked-up schema.
• Use -1 for unbounded cardinality.
• Use w3.org namespace.
• Support for Literal and Language Tag stems and stem ranges.

Release 0.4.0

Latest updates for ShEx 2.0:

• JSON grammar is now JSON-LD, creating a path to full support of RDF for specifying shapes.
• Inclusion and ShapeRef have been removed, as regular RDF-style references to resources are now the norm.
• An Inclusion &ref now references a TripleExpression directly rather than a ShapeExpression.

Release 0.3.0

• Supports JSON-LD version of ShExJ.
  • ShEx.parse with format: :shexj
  • ShEx::Algebra.from_shexj
  • ShEx::Operator.to_h for complete serialization to ShExJ from the internal algebra.
• Some improvements on shape results on either success or exception.
• Create ShEx::Extension as an abstract class for implementing extensions used for Semantic Actions (ShEx::Algebra::SemAct). This implements an event mechanism allowing a single extension instanace to be entered, exited and visited during the course of shape validation.

Release 0.2.0

• Separate Schema#satisfies? from Schema#execute.
  • Rework exception handling, keeping track of partial matched/unmatched and satisfied/unsatisfied. The operands are marked up with these recursively, and included in the expression accessor of the appropriate exception. ShEx::Algebra::Schema#execute returns this marked-up expression if it succeeds, and raises ShEx::NotSatisfied including the marked-up expression if it fails.
  • #satisfies? now just returns a boolean value.
• Now passing all regexp and numeric tests.
• Add only pertinent information to operation expression when not matched or satisfied.
• Change the way referenced is handled in statements, and include it when showing SXP.

Release

First public release.

• Parses ShExC into an executable algebra, serializable as S-Expressions.
• No support for ShExJ at this time.
• Error messages when graph does not satisfy a shape are not particularly useful yet.
• Passes most syntax, structure, and validation tests.