Claude Warren created JENA-1455:
-----------------------------------
Summary: QueryBuilder allows Node_Variable instances into
QueryTripleIterator
Key: JENA-1455
URL: https://issues.apache.org/jira/browse/JENA-1455
Project: Apache Jena
Issue Type: Bug
Components: QueryBuilder
Affects Versions: Jena 3.6.0
Reporter: Claude Warren
Assignee: Claude Warren
Priority: Minor
Using Node_Variable instances in Quads and Triples to to methods results in
Node_Variable instances appearing in the QueryTripleIterator.
QueryTripleIterator at line 87 calls Var.isVar(node) which throws an exception
if the node is a Node_Variable. But based code following line 87 I think that
Node_Variable should be accepted.
{noformat}
private static Node substitute(Node node, Binding binding)
{
if ( Var.isVar(node) ) // <---- line 87
{
Node x = binding.get(Var.alloc(node)) ;
if ( x != null )
return x ;
}
return node ;
}
{noformat}
QueryTripleIterator is internal code and is only expecting Var instances. The
solution is to fix the QueryBuilder code so that it only produces Var in the
queries resulting from a build() execution.
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