[kepler-dev] [Bug 4701] New: Persistent Database needed in Core Module for LSID generation to prevent namespace updating on clean-cache

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=4701

           Summary: Persistent Database needed in Core Module for LSID
                    generation to prevent namespace updating on
                    clean-cache
           Product: Kepler
           Version: 1.x dev
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P1
         Component: actors
        AssignedTo: crawl at sdsc.edu
        ReportedBy: aschultz at nceas.ucsb.edu
         QAContact: kepler-dev at kepler-project.org
                CC: barseghian at nceas.ucsb.edu


The need to use a database table to generate new LSID revisions (ref bug 4633)
spawned a new database table called LSID_GENERATOR.  The table is defined in
the common module's resources/configurations/configuration.xml file.  Because
all of these tables exist in the hsql database inside of the transient .kepler
directory, whenever that directory is removed the LSID_GENERATOR table is lost
and Kepler responds by retrieving a new namespace ID from the server.  

Moving the LSID_GENERATOR table to the persistent KeplerData directory will
prevent the namespace from being updated when the .kepler directory is removed. 

Two possible solutions are:

There is already an hsql database in the persistent directory but it is defined
in the provenance module.  That database could be moved out of the provenance
module and made to be shared by all modules.  But the code needed for it's
generation would need to be pushed into core (if it's not already there).

The other solution is to generate a new (3rd) hsql database in the persistent
directory under the core module and then move the LSID_GENERATOR table to that
database.

See the LSIDGenerator class' constructor for where the connection is made to
access the LSID_GENERATOR table.

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