SANSA Query 0.7.1

Features

• Spark
  • Further improvement of unit test coverage
  • Query-engine over compressed RDF data (beta)
  • Semantic-based query engine evaluation
• Bug Fixes
  • #17 STRAFTER doesn't work in sparql query
  • #29 Merge r2rml branch with ontop implementation
  • #34 Problem querying RDF containing a triple with an object of type XSD double
  • #44 No results for query that matches blank node

Dependency Changes

• Apache Spark 2.4.3 → 2.4.4
• Apache Flink 1.8.0 → 1.9.1
• Apache Jena 3.11.0 → 3.13.1

SANSA Query 0.6.0

Features

• Spark
  • Further improvement of unit test coverage
  • #31 Add SPARQL over RDF tensors approach
  • Sparklify evaluation

Bug Fixes

• #30 Fix issue of not returning the result set on semantic query engine
• #32 Correct broken DataLake input files

Dependency changes

• Apache Spark 2.4.0 → 2.4.3
• Apache Flink 1.7.0 → 1.8.0
• Apache Jena 3.9.0 → 3.11.0

SANSA Query 0.5.0

Features

• Spark
  • Add possibility to query heterogeneous data sources using SANSA DataLake
  • Add OnTop integration
  • Semantic-based query engine (refactoring)

Dependency changes

• Apache Spark 2.4.0
• Apache Flink 1.7.0
• Apache Jena 3.9.0

SANSA Query 0.4.0

Features

• Spark
  • Update: Join conditions on Spark working
  • Experimental: SPARQL-to-GraphX translation (performance tuning targeted for SANSA 0.5)
  • New: Query rewriter on top of semantic partitioning
• Flink
  • New: Query rewriter on top of semantic partitioning

Dependency changes

• Apache Spark 2.3.1
• Apache Flink 1.5.0
• Apache Jena 3.7.0

SANSA Query 0.3.0

Bugfixes

• Fixed an issue when using language tags in basic graph patterns
• Fixed version conflicts in dependencies
• Fixed an issue that caused invalid table names to be derived from certain URIs

Notes

• SPARQL query capabilities against the bundled SPARK release are limited due to a SPARK issue that was already resolved but will be only be availabe in the next SPARK release.

SANSA Query 0.2.0

Features

• Spark
  • Improved support for Datatypes

SANSA Query 0.1.0

Features

• Spark
  • Webserver based on Jena-Sparql-API
  • Partitioning based on Sparqlify
  • Support for SPARQL queries over SANSA RDF
• Flink is not supported in this release