Enum Mode 

#[non_exhaustive]
pub enum Mode {
    ReadWrite(Box<ReadWrite>),
    PartitionedDml(Box<PartitionedDml>),
    ReadOnly(Box<ReadOnly>),
}

Required. The type of transaction.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

ReadWrite(Box<ReadWrite>)

Transaction may write.

Authorization to begin a read-write transaction requires spanner.databases.beginOrRollbackReadWriteTransaction permission on the session resource.

PartitionedDml(Box<PartitionedDml>)

Partitioned DML transaction.

Authorization to begin a Partitioned DML transaction requires spanner.databases.beginPartitionedDmlTransaction permission on the session resource.

ReadOnly(Box<ReadOnly>)

Transaction does not write.

Authorization to begin a read-only transaction requires spanner.databases.beginReadOnlyTransaction permission on the session resource.

Implementations

impl Mode

pub fn from_read_write(value: impl Into<Box<ReadWrite>>) -> Self

Initializes the enum to the ReadWrite branch.

pub fn from_partitioned_dml(value: impl Into<Box<PartitionedDml>>) -> Self

Initializes the enum to the PartitionedDml branch.

pub fn from_read_only(value: impl Into<Box<ReadOnly>>) -> Self

Initializes the enum to the ReadOnly branch.

Trait Implementations

impl Clone for Mode

fn clone(&self) -> Mode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Mode

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

Formats the value using the given formatter.

impl PartialEq for Mode

fn eq(&self, other: &Mode) -> 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 Mode