Enum SqliteBegin 

#[non_exhaustive]
pub enum SqliteBegin {
    Deferred,
    Immediate,
    Exclusive,
}

SQLite’s begin modes — not isolation levels, and named so nobody can mistake them for a portable knob.

SQLite has one isolation level (serializable); what it lets you choose is when the transaction takes its locks. Asking for one of these on PostgreSQL or MySQL is an error, not a no-op.

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.

Deferred

Locks are taken at the first statement that needs them. The default.

Immediate

The write lock is taken at BEGIN, so a write-write conflict surfaces as TxConflict::Busy immediately instead of mid-transaction.

Exclusive

As IMMEDIATE, and other connections cannot read either (outside WAL).

Implementations

impl SqliteBegin

pub fn as_sql(self) -> &'static str

The keyword this mode contributes to BEGIN.

Trait Implementations

impl Clone for SqliteBegin

fn clone(&self) -> SqliteBegin

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SqliteBegin

impl Debug for SqliteBegin

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

Formats the value using the given formatter.

impl Eq for SqliteBegin

impl From<SqliteBegin> for TxOptions

fn from(mode: SqliteBegin) -> Self

Converts to this type from the input type.

impl Hash for SqliteBegin

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SqliteBegin

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SqliteBegin