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| author | Carlos Garnacho <carlosg@gnome.org> | 2021-11-28 14:26:55 +0100 |
|---|---|---|
| committer | Carlos Garnacho <carlosg@gnome.org> | 2022-02-04 19:22:01 +0100 |
| commit | bb1f8963b3f1fcb330f5ca6cff1c3af476336c92 (patch) | |
| tree | 2e80e260d6dafc501c5a4a07b4ce82977e0b4827 /docs/reference | |
| parent | 3387e7659c6cde5efb781612f07f5b6cf9fbf0ef (diff) | |
| download | tracker-bb1f8963b3f1fcb330f5ca6cff1c3af476336c92.tar.gz | |
docs: Add documentation blurb about DESCRIBE resultset format
It is unclear if it is a deviation or not from the spec, but anyhow it's
good to spell the decision out.
Diffstat (limited to 'docs/reference')
| -rw-r--r-- | docs/reference/libtracker-sparql/sparql-and-tracker.md | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/reference/libtracker-sparql/sparql-and-tracker.md b/docs/reference/libtracker-sparql/sparql-and-tracker.md index dc6ba79c6..78a39932f 100644 --- a/docs/reference/libtracker-sparql/sparql-and-tracker.md +++ b/docs/reference/libtracker-sparql/sparql-and-tracker.md @@ -262,3 +262,16 @@ this full-text search mechanism, by toggling the `tracker:fulltextIndexed` property on in the text `rdf:Property` instances. See the documentation on [defining ontologies](ontologies.html). + +## DESCRIBE queries + +The [SPARQL documentation](https://www.w3.org/TR/sparql11-query/#describe) +says: + +``` +The DESCRIBE form returns a single result RDF graph containing RDF data about resources. +``` + +In order to allow serialization to RDF formats that allow expressing graph information +(e.g. Trig), DESCRIBE resultsets have 4 columns for subject / predicate / object / graph +information. |