[JENA-500] SPARQL optimizer does not consider pre-bound variables, creates wrong query

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 2.11.0
• Fix Version/s: Jena 2.11.0
• Component/s: Optimizer
• Assignee: Andy Seaborne
• Reporter: Holger Knublauch
• Created: 04/Aug/13 07:42
• Updated: 29/Aug/14 17:52
• Resolved: 09/Aug/13 20:26

Description

There is a regression bug somewhere between 2.7.2 and 2.10.2.
See test case which works green in the old version but fails on the
latest snapshot. I believe the cause is that
TransformFilterImplicitJoin.testSpecialCaseUnused() incorrectly assumes
it can ignore the whole query if it encounters unbound variables.
However, in my case the variables do have values, coming from the
initial binding of the QueryExecution.