Re: [3.0.1] ResultSetFactory.fromJSON() won't parse ASK JSON result

[Andy Seaborne]

On 11/03/18 23:03, Martynas Jusevičius wrote:

Hi,

I'm getting the following JSON result from an ASK query:

   { "head": {}, "boolean": true }

However, the method that usually works fine, will not parse it from
InputStream (Jena 3.0.1):

     org.apache.jena.sparql.resultset.ResultSetException: Not a ResultSet
result
org.apache.jena.sparql.resultset.SPARQLResult.getResultSet(SPARQLResult.java:94)
org.apache.jena.sparql.resultset.JSONInput.fromJSON(JSONInput.java:64)
org.apache.jena.query.ResultSetFactory.fromJSON(ResultSetFactory.java:331)

I stepped inside the code and I see that JSONObject is parsed fine, but
afterwards SPARQLResult.resultSet field is not being set for some reason.

Any ideas?

The outcome of an ASK query is a boolean, not a ResultSet.

See execAsk.

SPARQLResult is the class for a holder of any SPARQL result type.

    Andy

Martynas