sszuev commented on code in PR #2461:
URL: https://github.com/apache/jena/pull/2461#discussion_r1597656296
##########
jena-core/src/main/java/org/apache/jena/vocabulary/RDF.java:
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@@ -59,6 +69,14 @@ public static Property li( int i )
public static final Resource Statement = Init.Statement();
public static final Resource List = Init.List();
public static final Resource nil = Init.nil();
+ /**
+ * This property is used explicitly in facet restrictions.
+ * Also, it can be used as a literal type
+ * (e.g., {@code 'test'^^rdf:PlainLiteral}) in old ontologies based on
RDF-1.0
+ *
+ * @see <a
href="https://www.w3.org/TR/rdf-plain-literal";>rdf:PlainLiteral: A Datatype for
RDF Plain Literals (Second Edition)</a>
+ */
+ public final static Resource PlainLiteral = Init.PlainLiteral();
Review Comment:
`rdf:PlainLiteral` is used by jena-ontapi
(https://github.com/apache/jena/blob/main/jena-ontapi/src/main/java/org/apache/jena/ontapi/common/OntVocabulary.java#L361),
since it is present in the specification:
https://www.w3.org/TR/owl2-quick-reference/#Built-in_Datatypes ( OWL 2 Web
Ontology Language Quick Reference Guide )
Also, it is used by OWLAPI (and ONTAPI)
https://github.com/owlcs/owlapi/blob/version5/impl/src/main/java/uk/ac/manchester/cs/owl/owlapi/InternalizedEntities.java#L44
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