[JENA-1188] sdbdump refuses to output a graph as Turtle

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 3.1.0
• Component/s: SDB
• Assignee: Unassigned
• Reporter: Osma Suominen
• Created: 06/Jun/16 12:48
• Updated: 08/Nov/16 10:21
• Resolved: 08/Jun/16 09:20

Description

I upgraded SDB to the 3.1.0 release version after running a snapshot build from early February. This broke a script that I use to periodically back up a SDB database:

sdbdump --sdb=$SDBROOT/sdb-yso.ttl \
  --graph=http://www.yso.fi/onto/yso/ \
  --out=TTL >$TTLFILE

This now gives the error

Not a 'quads' language (try 'N-Quads' or 'TriG')

The culprit seems to be this commit made on 8 Feb:
https://github.com/apache/jena/commit/cb449523c83832ceb9cf525b4b1e1f382c49c16f

I can see the point of requiring a quad-capable output format when dumping all graphs (though I'm not sure it should be a fatal error even in that case), but in my case, I asked for a single graph only. I think the check is overly strict.