[#SES-839] property path with more than two path alternatives does not get parsed correctly

Issue Details [XML]

Key:	SES-839
Type:	Bug
Status:	Resolved
Resolution:	Fixed
Priority:	Major
Assignee:	Jeen Broekstra
Reporter:	Jeen Broekstra
Votes:	0
Watchers:	0

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Sesame

property path with more than two path alternatives does not get parsed correctly

Created: 19/Sep/11 10:37 PM Updated: 19/Sep/11 10:55 PM

Component/s:

SPARQL

Affects Version/s:

2.5.0

Fix Version/s:

2.5.1

Description

Reported by Pointbreak on the mailinglist:

The query "SELECT ?result {<u:start> <u:1>|<u:2>|<u:3> ?result}" results
in the following TupleExpr when parsed by Sesame 2.5.0:

Projection
   ProjectionElemList
      ProjectionElem "result"
   Union
      StatementPattern
         Var (name=-const-1, value=u:start, anonymous)
         Var (name=-const-2, value=u:1, anonymous)
         Var (name=result)
      StatementPattern
         Var (name=-const-3, value=u:start, anonymous)
         Var (name=-const-4, value=u:2, anonymous)
         Var (name=result)

This seems incorrect. There should be a second union with the <u:3>
predicate.

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Comment by Jeen Broekstra [19/Sep/11 10:55 PM]

Fix checked in. Query now results in the following parse tree:

Projection
   ProjectionElemList
      ProjectionElem "result"
   Union
      StatementPattern
         Var (name=-const-1, value=u:start, anonymous)
         Var (name=-const-2, value=u:1, anonymous)
         Var (name=result)
      Union
         StatementPattern
            Var (name=-const-3, value=u:start, anonymous)
            Var (name=-const-4, value=u:2, anonymous)
            Var (name=result)
         StatementPattern
            Var (name=-const-5, value=u:start, anonymous)
            Var (name=-const-6, value=u:3, anonymous)
            Var (name=result)