Hi Tim,
I installed the latest release (5.0.7) on a linux box (64bits) and
reloaded our data from scratch. Surprisingly some SPARQL queries that
were working previously are not anymore. We have not done a full test
but so far I found that in some cases I got a string: ''end reservoir"
while asking for the rdfs:label of a resource (I also get the right
label). On the other hand, I also faced some issues with: FILTER
regex(?term_name, "test") , it seems the regex doesn't do the job
anymore (things like FILTER bound (?name) work.)...Let me know if you
need any "explain" execution or so...
Another question: what is expected to happen with virtuoso if I am
loading some data in a specific graph and namespace and during that
loading process I launch a SPARQL query to the system asking something
from that graph/namespace? I've got an error (DBD::ODBC::st execute
failed: [unixODBC][OpenLink][Virtuoso iODBC Driver][Virtuoso
Server]SR172: Transaction deadlocked (SQL-40001)) from my loading
pipeline script. The loading process stops. It seems I cannot query
during the loading process?
cheers,
Erick
Tim Haynes wrote:
Hi,
OpenLink Software is pleased to announce a new release of Virtuoso,
Open-Source Edition, version 5.0.7.
This release includes:
New: fully operational Native Graph Model Storage Providers for the Jena &
Sesame Frameworks.
Licensing change: the Jena and Sesame providers have been added to the
"Client Protocol Driver exemptions" paragraph in the
VOS License: http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VOSLicense
Improvements:
- Better support for alternate RDF indexing schemes
- Parallelization of RDF sponger operations across multiple RDF
data-sources concurrently
- New Sponger Cartridges and enhancements to the existing Cartridge collection
- Inference engine optimizations for subclass and subproperty that
efficiently handle taxonomies numbering tens of thousands of classes.
- OWL equivalentClass and equivalentProperty inference support.
- Dynamic handling of host component of IRIs; host component is now
flexible enough to painlessly handle multiple homing of domains and host
name component changes; no duplicate host name data storage required
via [URIQA] section of INI
- SPARQL optimizations to improve LIMIT and OFFSET handling
- JDBC driver has new connect options, smaller memory footprint and
optimized batch support
- ODS applications now support SyncML
Documentation Additions:
- How to read query plans and how to use the key performance meters
- How to diagnose SPARQL queries and how to decide what indexing scheme is
right for each RDF use case
- How to debug RDF views
- Better Documentation on SPARQL extensions and options
- An updated RDF View example based on the Northwind demonstration database
that reflects underlying enhancements
Bug Fixes:
- Generally improved safety of built-in functions, better argument checking.
- Verified UTF8 internationl character support in all RDF use cases, SQL
client/SPARQL protocol/all data formats.
For more details, see the release notes:
http://sourceforge.net/project/shownotes.php?group_id=161622&release_id=614029
Other links:
Virtuoso Open Source Edition:
Home Page: http://virtuoso.openlinksw.com/wiki/main/
Download Page: http://virtuoso.openlinksw.com/wiki/main/Main/VOSDownload
OpenLink Data Spaces:
Home Page: http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex
SPARQL Usage Examples (re. SIOC, FOAF, AtomOWL, SKOS):
http://virtuoso.openlinksw.com/wiki/main/Main/ODSSIOCRef
OpenLink AJAX Toolkit (OAT):
Project Page: http://sourceforge.net/projects/oat
Live Demonstration: http://demo.openlinksw.com/oatdemo
Interactive SPARQL Demo: http://demo.openlinksw.com/isparql/
OpenLink Data Explorer (Firefox extension for RDF browsing):
http://ode.openlinksw.com/
Regards,
~Tim
--
==================================================================
Erick Antezana http://www.cellcycleontology.org
PhD student
Tel:+32 (0)9 331 38 24 fax:+32 (0)9 3313809
VIB Department of Plant Systems Biology, Ghent University
Technologiepark 927, 9052 Gent, BELGIUM
er...@psb.ugent.be http://www.psb.ugent.be/~erant
==================================================================
