Examples of org.apache.derby.iapi.types.SQLReal

org.apache.derby.iapi.types.SQLReal

SQLReal satisfies the DataValueDescriptor interfaces (i.e., OrderableDataType). It implements a real column, e.g. for storing a column value; it can be specified when constructed to not allow nulls. Nullability cannot be changed after construction, as it affects the storage size and mechanism.

Because OrderableDataType is a subtype of ValueColumn, SQLReal can play a role in either a ValueColumn/Row or a OrderableDataType/Row, interchangeably.

We assume the store has a flag for nullness of the value, and simply return a 0-length array for the stored form when the value is null.

PERFORMANCE: There are likely alot of performance improvements possible for this implementation -- it new's Float more than it probably wants to.

This is called SQLReal even though it maps to the Java float type, to avoid confusion with whether it maps to the SQL float type or not. It doesn't, it maps to the SQL real type.

This is modeled after SQLSmallint. @see SQLSmallint

            break;
       case Types.DOUBLE:
           setValue(new SQLDouble((Double)value));
            break;
       case Types.REAL:
           setValue(new SQLReal((Float)value));
            break;
       default:
           if (SanityManager.DEBUG) {
                SanityManager.NOTREACHED();
           }

      scal = TypeId.REAL_SCALE;
      if (valueInP)
      {
        maxwidth = TypeId.REAL_MAXWIDTH;
        typeid = Types.REAL;
        setValue(new SQLReal((Float) arg1));
      }
      break;
      
    default:
      if (SanityManager.DEBUG)

Examples of org.apache.derby.iapi.types.SQLReal

Related Classes of org.apache.derby.iapi.types.SQLReal