rdflib 0.2.9

• Address CRAN vignette building.

rdflib 0.2.8

• tests fail gracefully on CRAN without internet resources

rdflib 0.2.7

make jsonld an optional dependency

rdflib 0.2.6

• bugfix vroom warning

rdflib 0.2.5

• bugfix UTF-8

rdflib 0.2.4

• bugfix in write_nquads() for rdf method

rdflib 0.2.3 2020-01-10

• Drop import of deprecated redland method, getNextResult (#33)

rdflib 0.2.2 2019-01-15

• Minor patch to fix license file
• Updates documentation with hex

rdflib 0.2.1 2018-11-25

• Minor patch to make test compatible with breaking change in readr 1.2.0 (#30)

rdflib 0.2.0 2018-11-13

New Features

• rdf() supports all major storage backends: Virtuoso, SQLite, Postgres, MySQL, in addition to existing support for BDB and memory-based storage.
• length() method added to report length of triplestore
• print() method gains rdf_max_print() option and does not print huge triplestores
• print() method sumarizes total number of triples and backend

rdflib 0.1.0 (2018-03-02)

New Features

• rdf() supports BDB backend for disk-based storage for large triplestores #6
• rdf_parse() gains an argument rdf to append triples to existing graph
• adds c() method to concatenate rdf objects
• Performance improvements make it possible to handle triplestores with millions of triples
• Two new vignettes better introduce RDF and package functions.

Minor Improvements

• rdf_query now bypasses the very slow iteration over getNextResult approach and uses an internal redland function call to access all results at once in csv format.

• experimental as_rdf method now uses a poor-man’s nquad serializer to rapidly generate rdf (instead of slowly iterating over add_rdf).

• rdf_add argument for object can now take all atomic types (numeric, integer, string, Date, POSIX, logical) and will automatically declare the appropriate datatype_uri if the user has not manually specified this.

• Numerous improvements to documentation from rOpenSci onboarding feedback, see #9 and #10

• both functions and unit tests are broken out into separate files in their respective directories.

• Additional example RDF data added in extdata

• rdf_serialize passes ... arguments to serializeToFile (e.g. to set a baseUri)

Bug Fixes

• rdf_free() will also remove the object from the parent frame, reducing the potential for crashing R by referring to a freed pointer.
• fix encoding with UTF-8 characters (coming from nquads & ntriples)
• rdf_query() now coerces data into appropriate type if it recognizes the data URI and can match that to an R type (a few XMLSchema types are recognized, otherwise still defaults to character string)
• Memory management: All methods free memory from any temporary objects they initialize, tests free memory. (e.g. parsers, serializers, query, statement)
• extend unit tests to cover new features, check UTF-8
• turtle parser/serializer fixed

Deprecated

• trig support removed (not working in redland without optional libraries and alternative compile configuration)

rdflib 0.0.3 (2018-01-02)

Bug Fixes

• add paper.md
• add package level documentation
• set base uri when serializing json-ld to rdf (#5)

rdflib 0.0.2 (2018-01-02)

New Features

• Added a NEWS.md file to track changes to the package.
• sparql query returns a data.frame format
• added a vignette
• added pkgdown website for vignette

rdflib 0.0.1 (2017-12-09)

• Initial prototype