Hello,
I am trying to use a property value rule to infer a value from another
property.
The use case involves using REGEX to strip out certain strings and special
characters.
The logic works OK with alphanumeric characters, but it returns an error on
special characters.
For example, the following statement works OK:
sh:values [
sh:select """
SELECT ?value2
WHERE {
$this <http://www.example.org#property1> ?value1 .
BIND (REPLACE (?value1, "foo" ,"") AS ?value2)
}
""" ;
];
However, the following statement, which is intended to remove the [
character, returns an error:
sh:values [
sh:select """
SELECT ?value2
WHERE {
$this <http://www.example.org#property1> ?value1 .
BIND (REPLACE (?value1, "\\[" ,"") AS ?value2)
}
""" ;
];
The escape characters \\ work OK in a SPARQL query. However, in the
property value rule, they return the following error:
(SHACL node expression of unknown type:
org.apache.jena.query.QueryParseException:... Encountered: '91' (91), after
prefix "\"\\")
Is there a different way to indicate escape characters, so that REGEX can
be used in the BIND/REPLACE statement?
Thank you,
Dan Segal
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