Add BlankNode support for SERVICE

UNEXENU commented 1 month ago

With this commit, QLever supports to add new blank nodes during the evaluation of a query. This function is used to support blank nodes in the result of a SERVICE request. These blank nodes are distinct from all blank nodes in the index, and also from all blank nodes from other SERVICE request, eve if they came from the same server. This behavior is correct accordin to the SPARQL 1.1 federated query standard.

codecov[bot] commented 1 month ago

Codecov Report

Attention: Patch coverage is 98.50746% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.94%. Comparing base (2b4e6b3) to head (9a01841).

Files with missing lines	Patch %	Lines
src/util/BlankNodeManager.cpp	96.87%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1504 +/- ## ========================================== + Coverage 88.93% 88.94% +0.01% ========================================== Files 364 366 +2 Lines 33127 33194 +67 Branches 3715 3722 +7 ========================================== + Hits 29462 29526 +64 - Misses 2433 2439 +6 + Partials 1232 1229 -3 ```

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