Support for more advanced join algorithms

Callidon / sparql-engine

🚂 A framework for building SPARQL query engines in Javascript/Typescript

https://callidon.github.io/sparql-engine

MIT License

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Support for more advanced join algorithms #12

Closed Callidon closed 5 years ago

Callidon commented 5 years ago

This pull request adds the support for the following functionalities:

The global query execution configuration is now handled by the new ExecutionContextclass (much like in Apache Jena).
Query hints, based on Blazegraph query hints.
Support for sequence property paths, which are rewritten as classic BGPs.
Using query hints, you can now execute Basic graph patterns using (Symmetric) Hash joins.

dwhitney commented 5 years ago

AMAZING! Thank you!

Callidon commented 5 years ago

Glad you like it 😄 Most of these features are not currently documented, but I will update the README soon.

Regarding property paths, this PR only adds supports for the sequence path. Complete support for all others property paths will come in the next few months.