question: protected static void registerJdbcType ( int typeCode , String typeName , JdbcTypeCategoryEnum category ) { Integer typeId = new Integer ( typeCode ) ; _typeNameToTypeCode . put ( typeName . toUpperCase ( ) , typeId ) ; _typeCodeToTypeName . put ( typeId , typeName . toUpperCase ( ) ) ; Set < Integer > typesInCategory = _typesPerCategory . get ( category ) ; if ( typesInCategory == null ) { typesInCategory = new HashSet < Integer > ( ) ; _typesPerCategory . put ( category , typesInCategory ) ; } typesInCategory . add ( typeId ) ; }
target:  Registers a jdbc type.