javax.jdo.query

Interface OrderExpression<T>

Type Parameters:

T - Java type of the expression being represented here

public interface OrderExpression<T>

Expression representing the ordering using an expression and a direction.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	OrderExpression.OrderDirection
static class	OrderExpression.OrderNullsPosition

Method Summary

Modifier and Type	Method and Description
OrderExpression.OrderDirection	getDirection() Accessor for the direction of the ordering with this expression.
Expression<T>	getExpression() Accessor for the expression being used for ordering.
OrderExpression.OrderNullsPosition	getNullsPosition() Accessor for the position of nulls with this expression.
OrderExpression<T>	nullsFirst() Method to set nulls to be ordered BEFORE non-nulls.
OrderExpression<T>	nullsLast() Method to set nulls to be ordered AFTER non-nulls.

Method Detail

getDirection

OrderExpression.OrderDirection getDirection()

Accessor for the direction of the ordering with this expression.

Returns:

The direction

getExpression

Expression<T> getExpression()

Accessor for the expression being used for ordering.

Returns:

Ordering expression

getNullsPosition

OrderExpression.OrderNullsPosition getNullsPosition()

Accessor for the position of nulls with this expression.

Returns:

The nulls position (or null if not defined)

nullsFirst

OrderExpression<T> nullsFirst()

Method to set nulls to be ordered BEFORE non-nulls.

Returns:

The order expression

nullsLast

OrderExpression<T> nullsLast()

Method to set nulls to be ordered AFTER non-nulls.

Returns:

The order expression