Modified SQL scripts to add the new access_log table. I've partially tested this under postgres but have not yet tested under oracle.
Reformatted code for readability and consistency.
Added javadoc that was missing for the EventLogData class.
Added classes for basic event logging support. These classes write log entries to the database connection. Still to do: query the event log, write oracle sql code (postgres is done), possibly allow the log to be archived to a text file, and possibly do the dtabase writes asynchronously via a caching mechanism.
Made change in result tag that is returned in getprincipals action. Replaced userdn with username.
Added GPL license text to harvester source files.
Fixed a bug the text filed in path xml query maybe splited.
Fixed a bug if a document already has index, but now metacat doesn't use index. If you try to delete this one, will cause error.
Clean up some code.
Revise the handle query and squery method, not finished yet.
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