org.apache.gravitino.rel.expressions.sorts

Class SortOrders

java.lang.Object

org.apache.gravitino.rel.expressions.sorts.SortOrders

public class SortOrders
extends java.lang.Object

Helper methods to create SortOrders to pass into Apache Gravitino.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SortOrders.SortImpl Create a sort order by the given expression with the given sort direction and null ordering.

Field Summary

Fields

Modifier and Type	Field and Description
static SortOrder[]	NONE NONE is used to indicate that there is no sort order.

Method Summary

Modifier and Type	Method and Description
static SortOrders.SortImpl	ascending(Expression expression) Create a sort order by the given expression with the ascending sort direction and nulls first ordering.
static SortOrders.SortImpl	descending(Expression expression) Create a sort order by the given expression with the descending sort direction and nulls last ordering.
static SortOrders.SortImpl	of(Expression expression, SortDirection direction) Create a sort order by the given expression with the given sort direction and default null ordering.
static SortOrders.SortImpl	of(Expression expression, SortDirection direction, NullOrdering nullOrdering) Create a sort order by the given expression with the given sort direction and null ordering.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NONE

public static final SortOrder[] NONE

NONE is used to indicate that there is no sort order.

Method Detail

ascending

public static SortOrders.SortImpl ascending(Expression expression)

Create a sort order by the given expression with the ascending sort direction and nulls first ordering.

Parameters:

expression - The expression to sort by

Returns:

The created sort order

descending

public static SortOrders.SortImpl descending(Expression expression)

Create a sort order by the given expression with the descending sort direction and nulls last ordering.

Parameters:

expression - The expression to sort by

Returns:

The created sort order

of

public static SortOrders.SortImpl of(Expression expression,
                                     SortDirection direction)

Create a sort order by the given expression with the given sort direction and default null ordering.

Parameters:

expression - The expression to sort by

direction - The sort direction

Returns:

The created sort order

of

public static SortOrders.SortImpl of(Expression expression,
                                     SortDirection direction,
                                     NullOrdering nullOrdering)

Create a sort order by the given expression with the given sort direction and null ordering.

Parameters:

expression - The expression to sort by

direction - The sort direction

nullOrdering - The null ordering

Returns:

The created sort order