plturrell

1. When a federated query with a VALUES clause is processed, the variable from the VALUES clause gets substituted with the literal value directly. 2. This substitution happens in Service.java...

Based on my analysis of the Jena codebase, I understand what's causing the BIND clause performance issue. I'll create a patch for the TransformFilterPlacement class to fix this problem. The...

The issue with blank nodes in federated queries is another manifestation of the same underlying problem: inappropriate variable substitution in SERVICE clauses. In this case, Jena is substituting a blank...

Fix for Blank Node Substitution in SERVICE Patterns Problem The issue occurs when a blank node is inappropriately substituted for a variable in a federated SERVICE query. Blank nodes have...