Change back to pass Connection a parameter.
Change back to pass connection as parameter.
Change back to pass connection as a parameter. Because new connection will cause an error.
Change back to pass connection as paramter in getUniqueID, otherwise new connection will cause a error: sequence XML_NODES_ID_SEQ.CURRVAL is not yet defined in this session
Add a new method - createStatement.
Correct the parameter of getDBConnection - methodName in code.
Change for every method to use getDBConnection and returnDBConnection to manage DBConnection.
Using getDBConenction rather than pass connection as parameter.
Using getDBConnection rather than pass connection as a parameter.
Using getDBConnection method rather than a parameter.
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