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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file. This project adheres to Semantic Versioning and Keep a CHANGELOG.

Unreleased

Added

  • RDF.PrefixMap
  • prefix management of RDF.Graphs:
    • the structure now has a prefixes field with an optional RDF.PrefixMap
    • new functions add_prefixes/2, delete_prefixes/2 and clear_prefixes/1
  • configurable RDF.default_prefixes
  • RDF.Description.equal?/2, RDF.Graph.equal?/2 and RDF.Dataset.equal?/2

Changed

  • the constructor functions for RDF.Graphs and RDF.Datasets now take the graph name resp. dataset name through a name option, instead of the first argument
  • RDF.Graph.new supports an additional prefixes argument to initialize the prefixes field
  • when RDF.Graph.add and RDF.Graph.put are called with another graph, its prefixes are merged
  • RDF.Turtle.Decoder saves the prefixes now
  • RDF.Turtle.Encoder now takes the prefixes to be serialized in the following order of precedence:
    • from the prefixes option (as before)
    • from the prefixes field of the given graph
    • from the RDF.default_prefixes
  • drop support for OTP < 20, since prefixes can consist of UTF characters which are not supported in atoms on these versions

Compare v0.5.4...HEAD

0.5.4 - 2019-01-17

Fixed

  • issue with Elixir 1.8
  • RDF.write_file and RDF.write_file! delegators had wrong signatures

Compare v0.5.3...v0.5.4

0.5.3 - 2018-11-11

Added

  • RDF.Triple.valid?/1, RDF.Quad.valid?/1 and RDF.Statement.valid?/1, which validate if a tuple is a valid RDF triple or RDF quad

Compare v0.5.2...v0.5.3

0.5.2 - 2018-11-04

Added

  • RDF.Term.value/1 returning the native Elixir value of a RDF term
  • RDF.Statement.values/1, RDF.Triple.values/1 and RDF.Quad.values/1 returning a tuple of RDF.Term.value/1 converted native Elixir values from a tuple of RDF terms
  • RDF.Description.values/1, RDF.Graph.values/1, RDF.Dataset.values/1 and RDF.Data.values/1 returning a map of RDF.Term.value/1 converted native Elixir values from the respective structure of RDF terms
  • for all of aforementioned values/1 functions a variant values/2 which allows to specify custom mapping function to be applied when creating the resp. structure
  • RDF.Literal.compare/2, RDF.Literal.less_than?/2 and RDF.Literal.greater_than?/2
    for RDF.Datatype aware comparisons of RDF.Literals

Fixed

  • RDF.DateTime.equal_value?/2 and RDF.Date.equal_value?/2 did not handle timezones correctly
  • -00:00 is a valid timezone offset on RDF.DateTime

Compare v0.5.1...v0.5.2

0.5.1 - 2018-09-17

Fixed

  • generated Erlang output files of Leex and Yecc are excluded from Hex package

Compare v0.5.0...v0.5.1

0.5.0 - 2018-09-17

Added

  • Possibility to execute simple SPARQL queries against RDF.Graphs with SPARQL 0.2
  • New RDF.Term protocol implemented for all structs representing RDF nodes and
    all native Elixir datatypes which are coercible to those modules. For now, it
    mainly offers, besides the coercion, just the function RDF.Term.equal?/2 and RDF.Term.equal_value?/2 for term- and value comparisons.
  • New RDF.Decimal datatype for xsd:decimal literals and support for decimal literals in Turtle encoder
  • RDF.Numeric module with a list of all numeric datatypes and shared functions for all numeric literals, eg. arithmetic functions
  • Various new RDF.Datatype function
    • RDF.Datatype.cast/1 for casting between RDF.Literals as specified in the XSD spec on all RDF.Datatypes
    • logical operators and the Effective Boolean Value (EBV) coercion algorithm from the XPath and SPARQL specs on RDF.Boolean
    • various functions on the RDF.DateTime and RDF.Time datatypes
    • RDF.LangString.match_language?/2
  • Many new convenience functions on the top-level RDF module
    • constructors for all of the supported RDF.Datatypes
    • constant functions RDF.true and RDF.false for the two boolean RDF.Literal values
  • RDF.Literal.Guards which allow pattern matching of common literal datatypes
  • RDF.BlankNode.Generator
  • Possibility to configure an application-specific default base IRI; for now it is used only on reading of RDF serializations (when no base specified)

Changed

  • Elixir versions < 1.6 are no longer supported
  • RDF.String.new/2 and RDF.String.new!/2 produce a rdf:langString when given a language tag
  • Some of the defined structs now enforce keys on compile-time (via Elixirs @enforce_keys feature) when not setting the corresponding fields would lead to invalid structs, namely the following fields:
    • RDF.IRI.value
    • RDF.BlankNode.id
    • RDF.Description.subject
    • RDF.List.head

Fixed

  • RDF.resource?/1 does not fail anymore when called with unresolvable atoms but returns false instead
  • RDF.IRI.absolute/2 does not fail with a FunctionClauseError when the given base is not absolute, but returns nil instead
  • RDF.DateTime and RDF.Time store microseconds
  • RDF.DateTime: '24:00:00' is a valid time in a xsd:dateTime; the dateTime value so represented is the first instant of the following day
  • RDF.LangString: non-strings or the empty string as language produce invalid literals

Compare v0.4.1...v0.5.0

0.4.1 - 2018-03-19

Added

  • RDF.Literal.new!/2 which fails when creating an invalid literal

Changed

  • RDF.Literal.new/2 can create rdf:langString literals without failing, they
    are simply invalid; if you want to fail without a language tag use the new RDF.Literal.new!/2 function

Compare v0.4.0...v0.4.1

0.4.0 - 2018-03-10

Changed

  • renamed RDF.Serialization behaviour to RDF.Serialization.Format; the new RDF.Serialization module contains just simple RDF serialization related functions
  • renamed RDF.Serialization.Format.content_type/0 to RDF.Serialization.Format.media_type/0
  • moved RDF.Reader and RDF.Writer into RDF.Serialization module
  • removed the limitation to serialization formats defined in the core RDF.ex package for use as a source of RDF.Vocabulary.Namespaces; so you can now also define vocabulary namespaces from JSON-LD files for example, provided that the corresponding Hex package is defined as a dependency

Added

  • RDF.Serialization.Formats define a name atom
  • all RDF.Serialization.Reader and RDF.Serialization.Writer functions are now available on the RDF.Serialization module (or aliased on the top-level RDF module) and the format can be specified instead of a RDF.Serialization.Format argument, via the format or media_type option or in case of *_file functions, without explicit specification of the format, but inferred from file name extension instead; see the updated README section about RDF serializations
  • the following functions to access available RDF.Serialization.Formats:
    • RDF.Serialization.formats/0
    • RDF.Serialization.available_formats/0
    • RDF.Serialization.format/1
    • RDF.Serialization.format_by_media_type/1
    • RDF.Serialization.format_by_extension/1

Compare v0.3.1...v0.4.0

0.3.1 - 2018-01-19

Added

  • Collectable implementations for all RDF.Data structures so they can be used as destinations of Enum.into and for comprehensions

Fixed

  • Fix unescape_map in parse_helper for Elixir 1.6 (@ajkeys)

Compare v0.3.0...v0.3.1

0.3.0 - 2017-08-24

Added

  • RDF.IRI as a more suitable URI/IRI representation for RDF, bringing enormous performance and memory consumption benefits (see here for the details about the improvements)

Changed

  • use RDF.IRI instead of Elixirs URI everywhere
  • use the term iri instead of uri consistently, leading to the following function renamings:
    • base_iri instead of base_uri for the definition of RDF.Vocabulary.Namespaces
    • __base_iri__ instead of __base_uri__ in all RDF.Vocabulary.Namespaces
    • __iris__ instead of __uris__ in all RDF.Vocabulary.Namespaces
    • RDF.IRI.InvalidError instead of RDF.InvalidURIError
    • RDF.Literal.InvalidError instead of RDF.InvalidLiteralError
    • RDF.Namespace.InvalidVocabBaseIRIError instead of RDF.Namespace.InvalidVocabBaseURIError
  • show compilation message of vocabulary namespaces always to be able to relate resp. errors and warnings

Fixed

  • when trying to resolve a term from an undefined module a RDF.Namespace.UndefinedTermError exception

Compare v0.2.0...v0.3.0

0.2.0 - 2017-08-12

Added

  • full Turtle support
  • RDF.List structure for the representation of RDF lists
  • describes?/1 on RDF.Data protocol and all RDF data structures which checks
    if statements about a given resource exist
  • RDF.Data.descriptions/1 which returns all descriptions within a RDF data structure
  • RDF.Description.first/2 which returns a single object to a predicate of a RDF.Description
  • RDF.Description.objects/2 now supports a custom filter function
  • RDF.bnode?/1 which checks if the given value is a blank node

Changed

  • Rename RDF.Statement.convert* functions to RDF.Statement.coerce*
  • Don't support Elixir versions < 1.4

Fixed

  • RDF.uri/1 and URI parsing of N-Triples and N-Quads decoders preserve empty fragments
  • booleans weren't recognized as coercible literals on object positions
  • N-Triples and N-Quads decoder didn't handle escaping properly

Compare v0.1.1...v0.2.0

0.1.1 - 2017-06-25

Fixed

  • Add src directory to package files.

Compare v0.1.0...v0.1.1

0.1.0 - 2017-06-25

Initial release

Note: This version is not usable, since the src directory is not part of the package, which has been immediately fixed on version 0.1.1.