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 andto provide more readable documentation.
Moved decision about whether to use xml_index forquery to the metacat.properties as "usexmlindex". Defaultis now false. Still have some refactoring to do to remove afew more uses of the xml_index table.
Created new printExtendedSQL function that can get the extendedreturn fields using only xml_nodes and not xml_index. Onestep closer to eliminating the dependence ofn xml_index.
Created test class QuerySpecificationTest and started process of removing the xml_index from the QuerySpecification code. Reformatted some classes for readability.
Removed the "getdataguide" action as it was always experimental and is no longer used in metacat or morpho.
removed the 3 versions of printPackageSQL which are no longer used by metacat. This eliminates some dependency on xml_index.
Implement Harvester Registration Servlet
Additional scheduling logic
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