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OpenOptions

Struct OpenOptions 

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pub struct OpenOptions {
    pub busy_timeout: Option<Duration>,
    pub schema_preflight: &'static [&'static SchemaDomain],
}
Expand description

Per-open overrides. The zero-value default defers everything to the profile.

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§busy_timeout: Option<Duration>

Override the profile’s busy timeout. A store with a deliberate contention policy (for example a lock-arbitration sidecar that waits 30s then fails closed) names it here instead of hand-rolling an opener. Values beyond SQLite’s int millisecond range are clamped to i32::MAX milliseconds.

§schema_preflight: &'static [&'static SchemaDomain]

Schema domains checked against the file’s meerkat_schema ledger BEFORE any mutating pragma runs. A file whose ledger records a version newer than a listed domain supports is refused (SqliteStoreError::SchemaFromTheFuture) with its logical content unmodified — sidecars may still be touched, because reading the ledger of a WAL-mode file over a read-write connection contacts its -wal/-shm files (see WriteContact::ReadOnlyWalSidecars). Without the preflight, a Primary open by an old binary would convert a future database’s journal mode before the ledger refusal in crate::ledger::apply_domain_migrations ever fires. The check runs unconditionally after every open — never gated on a pre-open filesystem probe, which a concurrent creator could race — and passes trivially on files with no ledger table (fresh creates, pre-ledger files). Empty (the default) skips the preflight.

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impl Clone for OpenOptions

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fn clone(&self) -> OpenOptions

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for OpenOptions

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impl Debug for OpenOptions

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

Formats the value using the given formatter. Read more
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impl Default for OpenOptions

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fn default() -> OpenOptions

Returns the “default value” for a type. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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Creates owned data from borrowed data, usually by cloning. Read more
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Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.