Adding parameters to stored procedure

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Description

1. Call SprocStatement.addSPParameter(). It calls spsql() which further call
   getSPParameters() to push parameters.
2. In getSPParameters() if _parameters[name] == null then last assigned
   value in "formatedValue" (which is having last non null parameter) is
   pushed in formattedArray.

Temporary solution :- if _parameters[name] == null then in else assign
blank string into formatedValue thus a blank string is pushed in
formattedArray in case of null.

Original issue reported on code.google.com by [email protected] on 9 Mar 2010 at 1:11