problem with a SPARQL Update query

[Erich Bremer]

The following SPARQL using Jena 3.1 works fine:

construct {?neo ?p ?o}
where {?s ?p ?o bind(iri(replace(str(?s),\"\\\\^\",\"r\")) as ?neo) filter
regex(str(?s),\"(A\\\\^2)\",\"i\")}

It generates modified versions of any IRI's that contain the illegal
character "^".

However, the following SPARQL, written to delete all triples which contain
"^" in the subject IRI, throws an error:
delete where {?s ?p ?o filter regex(str(?s),\"(A\\\\^2)\",\"i\")}

Exception in thread "main" org.apache.jena.query.QueryParseException:
Encountered " "filter" "filter "" at line 1, column 24.
Was expecting one of:
"graph" ...
"}" ...
";" ...
"," ...
"." ...
at
org.apache.jena.sparql.lang.ParserSPARQL11Update._parse(ParserSPARQL11Update.java:63)
at
org.apache.jena.sparql.lang.ParserSPARQL11Update.parse$(ParserSPARQL11Update.java:40)
at org.apache.jena.sparql.lang.UpdateParser.parse(UpdateParser.java:39)
at org.apache.jena.update.UpdateFactory.make(UpdateFactory.java:87)
at org.apache.jena.update.UpdateFactory.parse(UpdateFactory.java:93)
at org.apache.jena.update.UpdateRequest.add(UpdateRequest.java:60)
at experimental.fixthebadIRI.main(fixthebadIRI.java:40)
C:\Users\erich\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53:
Java returned: 1
BUILD FAILED (total time: 3 seconds)

The pertinent code to run these queries is here:

String qs2 = "construct {?neo ?p ?o} where {?s ?p ?o
bind(iri(replace(str(?s),\"\\\\^\",\"r\")) as ?neo) filter
regex(str(?s),\"(A\\\\^2)\",\"i\")}";
Query query2 = QueryFactory.create(qs2);
QueryExecution qe2 = QueryExecutionFactory.create(query2, m);
Model x = qe2.execConstruct();
m.add(x);

String qs = "delete where {?s ?p ?o filter
regex(str(?s),\"(A\\\\^2)\",\"i\")}";
UpdateRequest request = UpdateFactory.create();
request.add(qs);
UpdateAction.execute(request,m); 

Is there something wrong with the code and/or query?

- Erich

[Andy Seaborne]

Post by Erich Bremer
Is there something wrong with the code and/or query?

DELETE WHERE does not allow filters, only a basic graph pattern.

Andy

Post by Erich Bremer
construct {?neo ?p ?o}
where {?s ?p ?o bind(iri(replace(str(?s),\"\\\\^\",\"r\")) as ?neo)
filter regex(str(?s),\"(A\\\\^2)\",\"i\")}
It generates modified versions of any IRI's that contain the illegal
character "^".
However, the following SPARQL, written to delete all triples which
delete where {?s ?p ?o filter regex(str(?s),\"(A\\\\^2)\",\"i\")}
Encountered " "filter" "filter "" at line 1, column 24.
"graph" ...
"}" ...
";" ...
"," ...
"." ...
at
org.apache.jena.sparql.lang.ParserSPARQL11Update._parse(ParserSPARQL11Update.java:63)
at
org.apache.jena.sparql.lang.ParserSPARQL11Update.parse$(ParserSPARQL11Update.java:40)
at org.apache.jena.sparql.lang.UpdateParser.parse(UpdateParser.java:39)
at org.apache.jena.update.UpdateFactory.make(UpdateFactory.java:87)
at org.apache.jena.update.UpdateFactory.parse(UpdateFactory.java:93)
at org.apache.jena.update.UpdateRequest.add(UpdateRequest.java:60)
at experimental.fixthebadIRI.main(fixthebadIRI.java:40)
Java returned: 1
BUILD FAILED (total time: 3 seconds)
String qs2 = "construct {?neo ?p ?o} where {?s ?p ?o
bind(iri(replace(str(?s),\"\\\\^\",\"r\")) as ?neo) filter
regex(str(?s),\"(A\\\\^2)\",\"i\")}";
Query query2 = QueryFactory.create(qs2);
QueryExecution qe2 = QueryExecutionFactory.create(query2, m);
Model x = qe2.execConstruct();
m.add(x);
String qs = "delete where {?s ?p ?o filter
regex(str(?s),\"(A\\\\^2)\",\"i\")}";
UpdateRequest request = UpdateFactory.create();
request.add(qs);
UpdateAction.execute(request,m);
Is there something wrong with the code and/or query?
- Erich