rdf4j

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GH-3574 GC algorithm for LMDB store values

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GitHub issue resolved: #3574 Briefly describe the changes proposed in this PR: Implement GC algorithm for values in LMDB store. The algorithm will work synchronously to the transactions and will...

kenwenzel

The memorystore has a custom persistence mechanism using a bespoke file format for quick syncing of data to disk. Test coverage of this functionality is somewhat sketchy though. We should...

abrokenjester

Graph isomorphism has edge-case hash collisions when using 128 bit hash

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### Current Behavior In GH-3671 we discovered an example graph that intermittently fails the "self-isomorphism" test. We have not fully identified the root cause of this, but speculate there is...

abrokenjester

Investigate RDF-Star support for LMDB store

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### Problem description The LMDB store does not yet support values of type `org.eclipse.rdf4j.model.Triple`. A simple solution could be to handle those triples like other RDF values and store them...

kenwenzel

RDFS inferencer triggers too much statement changes on one property value deletion

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### Current Behavior Our RDF4J usage pattern is more like OLTP (many SPARQL Update queries) not OLAP (SPARQL Select "analytics" queries). We've discovered an unusual slowdown of a SPARQL Update...

amivanoff

### Current Behavior https://github.com/eclipse/rdf4j/blob/846122c8c7ddac98f7afd0e6cbd55387fd4d2174/core/sail/shacl/src/main/java/org/eclipse/rdf4j/sail/shacl/ShaclSailConnection.java#L520 Throwing an exception without either cancelling or waiting for the rest of the tasks will leave them hanging (and unclosed). ### Expected Behavior All tasks are...

hmottestad

### Current Behavior Statements with type declarations are being written out with the expanded `rdf:type` IRI rather than the `@type` shorthand when using the JSONLD Writer. Changing the `JSONLDSettings. USE_RDF_TYPE`...

daltontc

### Current Behavior With this query: ``` PREFIX fno: PREFIX rdf: select ?mf_id ?fo_id (count(?mf_id) as ?index) where { ?mf_id a fno:Function . ?mf_id fno:returns/rdf:rest* ?mid . ?mid rdf:rest*/rdf:first ?fo_id...

fkleedorfer

JSON-LD Parsing - missing exception with invalid @id

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### Current Behavior Parsing invalid "@id" values in a JSON-LD document like in the following example just resulted in no statements. (via RIO and ContextStatementCollector) ```json { "@context": { "ical":...

pajoma

Document how to mount a volume when using Docker

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### Current Behavior Currenty if I mount a directory like in the following docker-compose it is very likely that the container won't go up because it has no permission to...

fpompermaier