CLEREZZA-878 Active graphs are now stored in a dedicated meta-graph in virtuoso, and restored on component activation.
Worked on CLEREZZA-889 and CLEREZZA-890 Created a DataAccess to enclose a connection and all JDBC activity. Removed the relevant code from VirtuosoMGraph. Changed references where necessary. VirtuosoWeigthedProvider assures all DataAccess are properly closed on deactivation. The DataAccess class include proper prepared statements and uses a shared connection. Future work includes renewal policies for the JDBC connection.
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/clerezza