gravitino.api.expressions.sorts.sort_order.SortOrder¶

class gravitino.api.expressions.sorts.sort_order.SortOrder¶

Bases: Expression, ABC

Represents a sort order in the public expression API.

__init__()¶

Methods

`__init__`()
`children`()	Returns the children expressions of this sort order.
`direction`()	Returns the sort direction.
`expression`()	Returns the sort expression.
`null_ordering`()	Returns the null ordering.
`references`()	Returns a list of fields or columns that are referenced by this expression.

Attributes

`EMPTY_EXPRESSION`	EMPTY_EXPRESSION is only used as an input when the default children method builds the result.
`EMPTY_NAMED_REFERENCE`	EMPTY_NAMED_REFERENCE is only used as an input when the default references method builds the result array to avoid repeatedly allocating an empty array.

EMPTY_EXPRESSION: List[Expression] = []¶: EMPTY_EXPRESSION is only used as an input when the default children method builds the result.

EMPTY_NAMED_REFERENCE: List[NamedReference] = []¶: EMPTY_NAMED_REFERENCE is only used as an input when the default references method builds the result array to avoid repeatedly allocating an empty array.

children() → List[Expression]¶: Returns the children expressions of this sort order.

abstract direction() → SortDirection¶: Returns the sort direction.

abstract expression() → Expression¶: Returns the sort expression.

abstract null_ordering() → NullOrdering¶: Returns the null ordering.

references() → List[NamedReference]¶: Returns a list of fields or columns that are referenced by this expression.