Different decimal separator between ibatis and db

Question

I have a web spring application that uses ibatis. This application can be installed in different servers and different DBs. The problem comes when I setup a server, for example, in English (DOT as decimal separator) and a DB in Italian (COMMA as decimal separator). Consequently the decimal separators are different. I have one transformation depending on the DB I'm using in each case, not a big deal in iBatis. Some examples of the where condition are (Other DBs are possible a part from those ones):

Oracle: DECIMAL_COLUMN = TO_NUMBER(REPLACE(#STRING_VALUE#, '.', ','))

SQLServer: DECIMAL_COLUMN = REPLACE(#STRING_VALUE#, '.', ',')

For that example I've got a "ORA-01722: invalid number". My question is: Is there any way to get the decimal separator for each type of DB in iBatis? So I can replace that to something like:

DECIMAL_COLUMN = TO_NUMBER(REPLACE(#STRING_VALUE#, #SERVER_SIDE_DECIMAL_SEPARATOR#, #DATABASE_DECIMAL_SEPARATOR#))

What ever other solution or work around is more than welcome.

Thanks

Answer 1

Although didn't include his comment as a possible answer, I consider it a good possible solution. Here with a little bit of code

In Oracle case, altering the session to ,. or .,:

alter session set NLS_NUMERIC_CHARACTERS=',.';

depending on the server's locale. Simply using DecimalFormatSymbols to get those values:

String decimalSeparator = String.valueOf(new DecimalFormatSymbols().getDecimalSeparator());

String groupingSeparator = String.valueOf(new DecimalFormatSymbols().getGroupingSeparator());

In SQL Server, setting up the session language to the same as the server side:

SET LANGUAGE the_language;

and getting the language using Locale:

String language = Locale.getDefault().getDisplayLanguage("en_US");