Metacat

Add a concrete method toDate which can transfer text string to date type.

Add new method to handle toDate function.

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

Using getDBConenction rather than pass connection as parameter.

Using getDBConnection rather than pass connection as a parameter.

Using getDBConnection method rather than a parameter.

Change the prototype of method getUniqeID