Interface ColumnOrdering
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- 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.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description int
getColumnId()
boolean
getIsAscending()
boolean
getIsNullsOrderedLow()
Indicate whether NULL values should be ordered below non-NULL.
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Method Detail
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getColumnId
int getColumnId()
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getIsAscending
boolean getIsAscending()
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getIsNullsOrderedLow
boolean getIsNullsOrderedLow()
Indicate whether NULL values should be ordered below non-NULL. This function returns TRUE if the user has specified, via theclause in the ORDER BY clause, that NULL values of this column should sort lower than non-NULL values. - Returns:
- whether nulls should sort low
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