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

org.apache.derby.iapi.types.SQLDouble

SQLDouble satisfies the DataValueDescriptor interfaces (i.e., OrderableDataType). It implements a double 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 DataType, SQLDouble can play a role in either a DataType/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 Double more than it probably wants to.

This is modeled after SQLInteger.

We don't let doubles get constructed with NaN or Infinity values, and check for those values where they can occur on operations, so the set* operations do not check for them coming in. @author ames

    NumberDataValue nullValueInt() {
        return new SQLInteger();
    }


    NumberDataValue nullValueDouble() {
        return new SQLDouble();
    }

        }


    if (source != null)
      result = source;
    else
      result = new SQLDouble();


    result.setValue((double)(SQLTime.getSecond(encodedTime))
        + ((double)nanos)/1.0e9);


    return result;

      scal = TypeId.DOUBLE_SCALE;
      if (valueInP)
      {
        maxwidth = TypeId.DOUBLE_MAXWIDTH;
        typeid = Types.DOUBLE;
        setValue(new SQLDouble((Double) arg1));
      }
      break;


    case C_NodeTypes.FLOAT_CONSTANT_NODE:
      precision = TypeId.REAL_PRECISION;

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

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