Using getDBConnection rather than pass connection as a parameter.
made a ton of changes related to keeping oracle SQL code out of the main classes. fixed a bug where the timing of the index thread was off so when it went to index a document, the document was not already in xml_documents thus breaking the FK relation between xml_documents and xml_index. I think that bug might be the reason for the blank resultset screens in morpho. made the postgres implementation much more robust.
rename the DB* classes to:AbstractDatabaseOracleAdapterPostgresqlAdapterSqlserverAdapter