Struct TransactionSelector 

#[non_exhaustive]
pub struct TransactionSelector {
    pub selector: Option<Selector>,
    /* private fields */
}

This message is used to select the transaction in which a Read or ExecuteSql call runs.

See TransactionOptions for more information about transactions.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

selector: Option<Selector>

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

Implementations

impl TransactionSelector

pub fn new() -> Self

Creates a new default instance.

pub fn set_selector<T: Into<Option<Selector>>>(self, v: T) -> Self

Sets the value of selector.

Note that all the setters affecting selector are mutually exclusive.

pub fn single_use(&self) -> Option<&Box<TransactionOptions>>

The value of selector if it holds a SingleUse, None if the field is not set or holds a different branch.

pub fn set_single_use<T: Into<Box<TransactionOptions>>>(self, v: T) -> Self

Sets the value of selector to hold a SingleUse.

Note that all the setters affecting selector are mutually exclusive.

pub fn id(&self) -> Option<&Bytes>

The value of selector if it holds a Id, None if the field is not set or holds a different branch.

pub fn set_id<T: Into<Bytes>>(self, v: T) -> Self

Sets the value of selector to hold a Id.

Note that all the setters affecting selector are mutually exclusive.

pub fn begin(&self) -> Option<&Box<TransactionOptions>>

The value of selector if it holds a Begin, None if the field is not set or holds a different branch.

pub fn set_begin<T: Into<Box<TransactionOptions>>>(self, v: T) -> Self

Sets the value of selector to hold a Begin.

Note that all the setters affecting selector are mutually exclusive.

Trait Implementations

impl Clone for TransactionSelector

fn clone(&self) -> TransactionSelector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransactionSelector

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

Formats the value using the given formatter.

impl Default for TransactionSelector

fn default() -> TransactionSelector

Returns the “default value” for a type.

impl Message for TransactionSelector

fn typename() -> &'static str

The typename of this message.

impl PartialEq for TransactionSelector

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for TransactionSelector