[jena-site] branch main updated: Note that a javascript engine is required

[an...@apache.org]

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andy pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/jena-site.git


The following commit(s) were added to refs/heads/main by this push:
     new 71016fb25 Note that a javascript engine is required
71016fb25 is described below

commit 71016fb251d339a894481a7612aaf1e98e0d233a
Author: Andy Seaborne <an...@apache.org>
AuthorDate: Thu Jun 16 20:53:40 2022 +0100

    Note that a javascript engine is required
---
 source/documentation/query/javascript-functions.md | 27 +++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/source/documentation/query/javascript-functions.md b/source/documentation/query/javascript-functions.md
index f3f096217..9d079d45c 100644
--- a/source/documentation/query/javascript-functions.md
+++ b/source/documentation/query/javascript-functions.md
@@ -2,7 +2,7 @@
 title: ARQ - JavaScript SPARQL Functions
 ---
 
-ARQ supports (Jena v3.7.0 onwards) writing 
+ARQ supports writing 
 [custom SPARQL functions](https://www.w3.org/TR/sparql11-query/#extensionFunctions)
 in JavaScript. These functions can be used in FILTERs and for calculating
 values to assign with AS in BIND and SELECT expressions.
@@ -11,6 +11,31 @@ XSD datatypes for strings, numbers and booleans are converted to the
 native JavaScript datatypes. RDFterms that do not fit easily into
 JavaScript datatypes are handled with a object class `NV`.
 
+## Requirements
+
+ARQ requires a javascript engine such as [GraalVM](https://www.graalvm.org/) to
+be added to the classpath.
+
+``` 
+    <properties>
+      <ver.graalvm>....</ver.graalvm>
+      ...
+```
+
+```
+    <dependency>
+      <groupId>org.graalvm.js</groupId>
+      <artifactId>js</artifactId>
+      <version>${ver.graalvm}/version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.graalvm.js</groupId>
+      <artifactId>js-scriptengine</artifactId>
+      <version>${ver.graalvm}/version>
+    </dependency>
+```
+    
 ## Loading JavaScript functions
 
 JavaScript is loaded from an external file using the context setting