Struct tc_table::Merged

pub struct Merged<F, D, Txn> { /* fields omitted */ }

A merge of multiple table indexes

Implementations

impl<F: File<Node>, D: Dir, Txn: Transaction<D>> Merged<F, D, Txn>

pub fn new(
    left: MergeSource<F, D, Txn>,
    right: IndexSlice<F, D, Txn>
) -> TCResult<Self>

Create a new merge of the given IndexSlice with the given MergeSource.

pub async fn slice_rows<'a>(
    self,
    txn_id: TxnId,
    bounds: Bounds,
    reverse: bool
) -> TCResult<TCTryStream<'a, Vec<Value>>>

Stream the rows within the given Bounds of this merge

Trait Implementations

impl<F: Clone, D: Clone, Txn: Clone> Clone for Merged<F, D, Txn>

fn clone(&self) -> Merged<F, D, Txn>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<F, D, Txn> From<Merged<F, D, Txn>> for Table<F, D, Txn>

fn from(merged: Merged<F, D, Txn>) -> Self

Performs the conversion.

impl<F, D, Txn> Instance for Merged<F, D, Txn> where
    Self: Send + Sync, 

type Class = TableType

The Class type of this instance

fn class(&self) -> Self::Class

Returns the [Class] of this instance.

impl<F: File<Node>, D: Dir, Txn: Transaction<D>> TableInstance<F, D, Txn> for Merged<F, D, Txn>

type OrderBy = Self

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

type Reverse = Self

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

type Slice = Self

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

fn delete<'life0, 'async_trait>(
    &'life0 self,
    txn_id: TxnId
) -> Pin<Box<dyn Future<Output = TCResult<()>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    Self: 'async_trait, 

Delete all rows in this Table.

fn delete_row<'life0, 'async_trait>(
    &'life0 self,
    txn_id: TxnId,
    row: Row
) -> Pin<Box<dyn Future<Output = TCResult<()>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    Self: 'async_trait, 

Delete the given Row from this table, if present.

fn key(&self) -> &[Column]

Return the schema of this Table’s key.

fn values(&self) -> &[Column]

Return the schema of this Table’s values.

fn schema(&self) -> TableSchema

Return the schema of this Table.

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

Set the order returned by rows.

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

Reverse the order returned by rows.

fn slice(self, bounds: Bounds) -> TCResult<Self::Slice>

Limit the returned rows to the given Bounds.

fn rows<'a, 'async_trait>(
    self,
    txn_id: TxnId
) -> Pin<Box<dyn Future<Output = TCResult<TCTryStream<'a, Vec<Value>>>> + Send + 'async_trait>> where
    'a: 'async_trait,
    Self: 'async_trait, 

Return a stream of the rows in this Table.

fn validate_bounds(&self, bounds: &Bounds) -> TCResult<()>

Return an error if this table does not support the given Bounds.

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

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

fn update<'life0, 'life1, 'async_trait>(
    &'life0 self,
    txn: &'life1 Txn,
    value: Row
) -> Pin<Box<dyn Future<Output = TCResult<()>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    'life1: 'async_trait,
    Self: 'async_trait, 

Update the values of the columns in this Table to match the given Row.

fn update_row<'life0, 'async_trait>(
    &'life0 self,
    txn_id: TxnId,
    row: Row,
    value: Row
) -> Pin<Box<dyn Future<Output = TCResult<()>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    Self: 'async_trait, 

Update one row of this Table.

fn count<'async_trait>(
    self,
    txn_id: TxnId
) -> Pin<Box<dyn Future<Output = TCResult<u64>> + Send + 'async_trait>> where
    Self: Send + 'async_trait, 

Return the number of rows in this Table.

fn group_by(
    self,
    columns: Vec<Id>
) -> TCResult<Aggregate<F, D, Txn, Self::OrderBy>>

Group this Table by the given columns.

fn index<'async_trait>(
    self,
    txn: Txn,
    columns: Option<Vec<Id>>
) -> Pin<Box<dyn Future<Output = TCResult<ReadOnly<F, D, Txn>>> + Send + 'async_trait>> where
    F: TryFrom<D::File, Error = TCError>,
    D::FileClass: From<BTreeType>,
    Self: Send + 'async_trait, 

Construct and return a temporary index of the given columns.

fn limit(self, limit: u64) -> Limited<F, D, Txn>

Limit the number of rows returned by rows.

fn select(self, columns: Vec<Id>) -> TCResult<Selection<F, D, Txn, Self>>

Limit the columns returned by rows.

fn upsert<'life0, 'async_trait>(
    &'life0 self,
    _txn_id: TxnId,
    _key: Vec<Value>,
    _value: Vec<Value>
) -> Pin<Box<dyn Future<Output = TCResult<()>> + Send + 'async_trait>> where
    'life0: 'async_trait,
    Self: Sync + 'async_trait, 

Insert or update the given row.