RDF-star alignment
diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index 11666c4..86480ec 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -79,7 +79,7 @@
<li><a href="/documentation/tdb2/index.html">TDB2</a></li>
<li><a href="/documentation/query/text-query.html">Text Search</a></li>
<li><a href="/documentation/shacl/index.html">SHACL</a></li>
- <li><a href="/documentation/rdfstar/index.html">RDF*</a></li>
+ <li><a href="/documentation/rdfstar/index.html">RDF-star</a></li>
<li><a href="/documentation/tools/index.html">Command-line tools</a></li>
<li><a href="/documentation/hadoop/index.html">Elephas - tools for RDF on Hadoop</a></li>
<li><a href="/documentation/jdbc/index.html">SPARQL over JDBC</a></li>
diff --git a/source/documentation/rdf-star/__index.md b/source/documentation/rdf-star/__index.md
index dc7a3db..e33cc6d 100644
--- a/source/documentation/rdf-star/__index.md
+++ b/source/documentation/rdf-star/__index.md
@@ -5,8 +5,10 @@
- /docimentation/rdfstar/
- /documentation/rdfstar/index.html
---
+
[RDF-star](https://w3c.github.io/rdf-star/) is an extension to RDF that provides
-a way for one triple to refer to another triple. Another resource about RDF\* is
+a way for one triple to refer to another triple. RDF\* is the name of the
+original work which is described in
[Olaf Hartig's blog entry](https://blog.liu.se/olafhartig/2019/01/10/position-statement-rdf-star-and-sparql-star/).
Example:
@@ -21,8 +23,9 @@
Jena provides support for RDF-star and the related SPARQL-star.
-* Turtle, N-Triples, TriG and N-Quads extended for Triple Terms syntax. There is no output in RDF/XML.
-* SPARQL extended with Triple Term syntax for graph matching (in code, use `Syntax.syntaxARQ`).
+* Turtle, N-Triples, TriG and N-Quads extended for Triple Terms syntax,
+ input and output. There is no output in RDF/XML.
+* SPARQL extended with Triple Term syntax for graph matching
* SPARQL Result formats for JSON and XML extended to support Triple Terms in results.
* Support in the Model API.
@@ -30,7 +33,8 @@
The aim is to follow the definition of the [RDF-star community](https://w3c.github.io/rdf-star/).
-Storage in databases [TDB1](/documentation/tdb) and [TDB2](/documentation/tdb2/) is supported as of Jena 3.16.0.
+Storage in databases [TDB1](/documentation/tdb) and [TDB2](/documentation/tdb2/)
+as well as in-memory databases is supported.
## RDF-star
@@ -57,18 +61,32 @@
}
```
+Use in expressions:
+
+```sparql
+SELECT ?t {
+ ?s ?p ?o
+ BIND(<< ?s ?p ?o>> AS ?t)
+}
+```
+```sparql
+SELECT (<< ?s ?p ?o>> AS ?t) {
+ ?s ?p ?o
+}
+```
+
### SPARQL Functions related to embedded triples
These functions cause an expression error if passed the wrong type of arguments. `afn:`
is a prefix for `<http://jena.apache.org/ARQ/function#>`.
-| Keyword | Function | Description |
-|--------------------| ------------------------ | ------------ |
-| TRIPLE(?s, ?p, ?o) | `afn:triple(?s, ?p, ?o)` | Create an embedded triple from s/p/o |
-| isTRIPLE(?t) | `afn:isTriple(?t)` | Return true if the argument value is an embedded triple |
-| SUBJECT(?t) | `afn:subject(?t)` | Return the subject of the embedded triple |
-| PREDICATE(?t) | `afn:predicate(?t)` | Return the predicate (property) of the embedded triple |
-| OBJECT(?t) | `afn:object(?t)` | Return the object of the embedded triple |
+| Function | Description |
+|----------------------|------------------------ |
+| `TRIPLE(?s, ?p, ?o)` | Create an embedded triple from s/p/o |
+| `isTRIPLE(?t)` | Return true if the argument value is an embedded triple |
+| `SUBJECT(?t)` | Return the subject of the embedded triple |
+| `PREDICATE(?t)` | Return the predicate (property) of the embedded triple |
+| `OBJECT(?t)` | Return the object of the embedded triple |
### SPARQL results
@@ -109,7 +127,7 @@
RDF-star embedded triples are treated as `Resource` to preserve the typed Model API.
They occur in the subject and object positions.
-A `Resource` contains a `Statement` object if the underlying RDF term is an RDF* embedded triple.
+A `Resource` contains a `Statement` object if the underlying RDF term is an RDF-star embedded triple.
New methods include:
