Package com.illumon.iris.db.v2.by.ssmcountdistinct

Interface DistinctOperatorFactory

public interface DistinctOperatorFactory
A factory interface to create operators for the AggType.Distinct AggType.CountDistinct, AggType.Unique and their rollup counterparts

  • Field Details

  • Method Details

    • createCountDistinct

      static IterativeChunkedAggregationOperator createCountDistinct​(Class<?> type, String resultName, boolean countNulls, boolean exposeInternal, boolean isRollup)
      Create an operator for the AggType.CountDistinct aggregation.
      Parameters:
      type - the type of the column
      resultName - the name of the result column
      countNulls - true if null values should be counted as important values, or false if they should be ignored.
      exposeInternal - true if the underlying SSM state should be exposed as a column (for use with rollups)
      isRollup - true if the returned operator should be suitable for second or higher levels of rollup aggregation
      Returns:
      an appropriate operator.

    • createDistinct

      static IterativeChunkedAggregationOperator createDistinct​(Class<?> type, String resultName, boolean countNulls, boolean exposeInternal, boolean isRollup)
      Create an operator for the AggType.Distinct aggregation.
      Parameters:
      type - the type of the column
      resultName - the name of the result column
      countNulls - true if null values should be counted as important values, or false if they should be ignored.
      exposeInternal - true if the underlying SSM state should be exposed as a column (for use with rollups)
      isRollup - true if the returned operator should be suitable for second or higher levels of rollup aggregation
      Returns:
      an appropriate operator.

    • createUnique

      static IterativeChunkedAggregationOperator createUnique​(Class<?> type, String resultName, boolean countNulls, boolean exposeInternal, Object noKeyValue, Object nonUniqueValue, boolean isRollup)
      Create an operator for the AggType.Unique aggregation.
      Parameters:
      type - the type of the column
      resultName - the name of the result column
      countNulls - true if null values should be counted as important values, or false if they should be ignored.
      exposeInternal - true if the underlying SSM state should be exposed as a column (for use with rollups)
      isRollup - true if the returned operator should be suitable for second or higher levels of rollup aggregation
      Returns:
      an appropriate operator.

    • checkType

      static void checkType​(String resultColName, String valueIntent, Class<?> expected, Object value)

    • checkNumericCompatibility

      static boolean checkNumericCompatibility​(Number value, Class<?> expected)