News
Mulgara v2.0.0 has been released.
This is the official release of version 2.0.0. This release is feature compatible with the 2.0.0-BETA release. The primary changes are bug fixes for stability and standards compliance. See the release notes for full details.
Thank you again to all the effort by Revelytix, Fedora Commons and Topaz.
Go to the download page for the full sources and distribution files.
This release also coincides with the release of our new web site. We hope you like it.
Mulgara v2.0.0 BETA has been released.
This release fixes many of the known issues in v2.0.0 ALPHA, and establishes the baseline for the coming release of Mulgara v2.0.0. See the release notes for full details.
New features include:
* Date/Time values are now maintained in their original format.
* The XSD Resolver now has a default graph of sys:xsd.
* Preliminary framework for ASK, CONSTRUCT and DESCRIBE queries. Note: This is not yet reliable.
* Graph names may now be relative URIs.
As well as the usual help from Fedora Commons and Topaz we would also like to thank Revelytix for their recent contributions.
Go to the download page for the full sources and distribution files.
Sesame and Mulgara Integration Announced.
Aduna and Zepheira, LLC announced today that the Sesame RDF framework now supports the storage of RDF data in the Mulgara Semantic Store.
Aduna has released Sesame version 2.2 Beta1, which includes support for the Mulgara storage layer. Production releases are being finalized now and are expected later this summer.
The full press release is on the Zepheira website.
Mulgara v2.0 ALPHA has been released.
This release establishes several important features for the eventual full release of Mulgara v2.0.0. See the release notes for full details.
New features include:
* SPARQL Query support. Note that this is NOT the new Sesame-Mulgara bridge that also provides a SPARQL interface to a Mulgara data store.
* A new Connection API.
* Virtual graphs (created by Resolvers) may now be created automatically.
* Arbitrary graph names.
* Language tagging for untyped literals. This is an important feature for RDF compliance.
The Mulgara team would like to thank Fedora Commons and Topaz for supporting the development of SPARQL. Special thanks also goes to the guys at Aduna who helped drive features in the query engine as they integrated their own SPARQL system.
Go to the download page for the full sources and distribution files.
Mulgara v1.2.1 has been released. This is a minor bugfix release.
Bugs fixed are:
* Restore of a backup file from a client machine threw an exception based on data being uncompressed before being sent across the wire.
* Backups were inverting remote/local modifiers.
The full sources and distribution files are here.
Mulgara v1.2 has been released. This is the last significant release before version 2.0.
Main updates are:
* The Java Transaction Architecture JTA.
* Fixed a major problem in backups where the wrong transaction phase could be backed up instead.
* Improvements in RDF loading speed.
* Numerous bug fixes
* Several new APIs in preparation for version 2.0.
See the release notes for more details. The full sources and distribution files are here.
Mulgara has moved. We are now co-hosted with the Topaz Project.
We've also taken advantage of this change to move to the open source development tracking software Trac. There may be a few glitches while we sort out the transition.
We'd like to thank the people at Topaz for their continued support.
Mulgara v1.1.1 has been released. This is a minor release.
Main updates are:
* Java 1.6 compatibility.
* Numerous resource leaks fixed.
* Several bug fixes around transactions.
The full sources and distribution files are here.
Mulgara v1.1.0 has been released!
This release has a lot of significant changes. In future, the Mulgara team hope to announce smaller incremental releases in the 1.1.x series.
Significant New features include:
* New Transaction framework fixing several Concurrent Modification bugs, and ensuring ACID compliance.
* A RelationalResolver that provides access to sql databases via a D2RQ mapping.
* A DistributedResolver allowing selections from multiple servers in one query, and also permitting insert/select queries between multiple servers.
* Updates to the TQL language, giving it Predicate-Object lists and Object lists, similar to SPARQL.
* Several significant bug fixes, improving stability, performance, resource consumption, and allowing operations which previously failed.
A special "Thank You" to Andrae Muys and Topaz for some of the bigger tasks in this release.
Go to the download page for the full sources and distribution files.
Several significant fixes went into Subversion this week. This includes a problem that may have led to concurrent access exceptions in the past. If possible, updating from SVN is advised.
These modifications will appear in the upcoming release. The release is being held off until the key feature of model renaming has been completed, but we anticipate an announcement in the next few weeks.
The new transaction architecture has now been merged into the main codebase. This provides some major fixes, and allows overlapping access to multiple Answers. There have been many queries about exceptions due to multiple transactions, and this will address all of those issues. For more details see the announcement here.
Thanks go to Andrae for putting in a serious effort for the design and implementation. Thanks also to Netymon, Viewpoint Systems, and Bosatsu, who all provided support to Andrae to get this done.
Version 1.0 of a real-time relational resolver has been added to Mulgara. This resolver will permit the mapping of a relational schema into RDF via a D2RQ V0.4 definition file. This allows relational data to be queried via Mulgara alongside Lucene, XSD, and both external and internal RDF data sources.
Many thanks go to the Australian Defense Science and Technology Organisation (DSTO) who funded the work, and especially to Andrae Muys who negotiated this with the DSTO and implemented the code.
The code is currently available in Subversion, and will be included in the next release of Mulgara.
Mulgara v1.0.0 has been released! This is the first release since the fork from Kowari, and includes some much needed updates.
The full sources and distribution files are here.
