Interface ColumnOrdering

All Known Implementing Classes:
IndexColumnOrder

public interface ColumnOrdering
The column ordering interface defines a column that is to be ordered in a sort or index, and how it is to be ordered. Column instances are compared by calling the compare(Orderable) method of Orderable.
  • Method Summary

    Modifier and Type
    Method
    Description
    int
     
    boolean
     
    boolean
    Indicate whether NULL values should be ordered below non-NULL.
  • Method Details

    • getColumnId

      int getColumnId()
    • getIsAscending

      boolean getIsAscending()
    • getIsNullsOrderedLow

      boolean getIsNullsOrderedLow()
      Indicate whether NULL values should be ordered below non-NULL. This function returns TRUE if the user has specified, via the clause in the ORDER BY clause, that NULL values of this column should sort lower than non-NULL values.
      Returns:
      whether nulls should sort low