Enum JournalSelect 

#[non_exhaustive]
pub enum JournalSelect {
    WalWithFallback,
    WalStrict,
    Delete,
    Truncate,
}

How the journal mode is chosen. WAL needs working shared-memory locking, which network filesystems often lack and which SQLite will silently downgrade; the default therefore verifies the mode that took effect and falls back to a rollback journal.

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.

WalWithFallback

WAL when the filesystem honors it and is not a detected network mount; else a rollback journal (TRUNCATE with DbOptions::per_host_fallback, else DELETE).

WalStrict

WAL or fail (no fallback).

Delete

Rollback journal, deleted after each transaction.

Truncate

Rollback journal, truncated after each transaction.

Trait Implementations

impl Clone for JournalSelect

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for JournalSelect

impl Debug for JournalSelect

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

Formats the value using the given formatter.

impl Eq for JournalSelect

impl PartialEq for JournalSelect

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for JournalSelect