Metacat

Add delete capability to single file upload servlet

Set content type properly for getversion action.

Added a simple action for finding out the current metacat version. The information is pulled from the property file, so be sure to update the version in the property file before shipping a release.

Fixed a bug in the new recursive SQL statements that prevented them from operating on oracle. Now they should work on both oracle and postgres.

Reformatted source for readability and conformance.

Excluded the update of the xml_index table in insert,update, and delete if the usexmlindex option is set to false.

Reformatted DBQuery.java for readability and consistency.

Changed printAttributeQuery() to no longer depend on the xml_index table. Now, if useXMLIndex is false, the method will use a recursive query on xml_nodes to match paths instead of using xml_index.

Some refactoring of the printExtendedSQL()
methods to eliminate redundancy in the code and
to provide more readable documentation.

Moved decision about whether to use xml_index for
query to the metacat.properties as "usexmlindex". Default
is now false. Still have some refactoring to do to remove a
few more uses of the xml_index table.