Trait tc_table::TableOrder

pub trait TableOrder: TableInstance {
    type OrderBy: TableInstance;
    type Reverse: TableInstance;

    fn order_by(self, columns: Vec<Id>, reverse: bool) -> TCResult<Self::OrderBy>;
    fn reverse(self) -> TCResult<Self::Reverse>;
    fn validate_order(&self, order: &[Id]) -> TCResult<()>;
}

Table sort methods

Required Associated Types

type OrderBy: TableInstance

The type of Table returned by this instance’s order_by method.

type Reverse: TableInstance

The type of Table returned by this instance’s reversed method.

Required Methods

fn order_by(self, columns: Vec<Id>, reverse: bool) -> TCResult<Self::OrderBy>

Return an ordered view of this table.

fn reverse(self) -> TCResult<Self::Reverse>

Reverse the order returned by rows.

fn validate_order(&self, order: &[Id]) -> TCResult<()>

Return an error if this table does not support ordering by the given columns.

Implementors

impl<F, D, Txn> TableOrder for Table<F, D, Txn>where
    F: File<Key = NodeId, Block = Node>,
    D: Dir,
    Txn: Transaction<D>,
    Self: Send + Sync,

type OrderBy = Table<F, D, Txn>

type Reverse = Table<F, D, Txn>

impl<F, D, Txn> TableOrder for Merged<F, D, Txn>where
    F: File<Key = NodeId, Block = Node>,
    D: Dir,
    Txn: Transaction<D>,

type OrderBy = Merged<F, D, Txn>

type Reverse = Merged<F, D, Txn>

impl<F, D, Txn> TableOrder for TableIndex<F, D, Txn>where
    F: File<Key = NodeId, Block = Node>,
    D: Dir,
    Txn: Transaction<D>,

type OrderBy = Merged<F, D, Txn>

type Reverse = Merged<F, D, Txn>