Enum gcp_client::google::spanner::v1::transaction_selector::Selector

pub enum Selector {
    SingleUse(TransactionOptions),
    Id(Vec<u8>),
    Begin(TransactionOptions),
}

If no fields are set, the default is a single use transaction with strong concurrency.

Variants

SingleUse(TransactionOptions)

Execute the read or SQL query in a temporary transaction. This is the most efficient way to execute a transaction that consists of a single SQL query.

Id(Vec<u8>)

Execute the read or SQL query in a previously-started transaction.

Begin(TransactionOptions)

Begin a new transaction and execute this read or SQL query in it. The transaction ID of the new transaction is returned in [ResultSetMetadata.transaction][google.spanner.v1.ResultSetMetadata.transaction], which is a [Transaction][google.spanner.v1.Transaction].

Implementations

impl Selector

pub fn encode<B>(&self, buf: &mut B) where
    B: BufMut, 

pub fn merge<B>(
    field: &mut Option<Selector>,
    tag: u32,
    wire_type: WireType,
    buf: &mut B,
    ctx: DecodeContext
) -> Result<(), DecodeError> where
    B: Buf, 

pub fn encoded_len(&self) -> usize

Trait Implementations

impl Clone for Selector

fn clone(&self) -> Selector

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Selector

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq<Selector> for Selector

fn eq(&self, other: &Selector) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Selector) -> bool

This method tests for !=.

impl StructuralPartialEq for Selector