Package org.apache.druid.query.rowsandcols.column

Interface ColumnValueSwapper

public interface ColumnValueSwapper
A semantic interface for use with Column objects. This is used to swap values inside of a column. Note that this interface fundamentally mutates the underlying column. If a column cannot support mutation, it should not return return an implementation of this interface.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    swapValues(int lhs, int rhs)
    Swaps the values at the two row ids.

  • Method Details

    • swapValues

      void swapValues(int lhs, int rhs)
      Swaps the values at the two row ids. There is no significant to "right" and "left", it's just easier to name the parameters that way.
      Parameters:
      lhs - the left-hand-side rowId
      rhs - the right-hand-side rowId