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PrefetchMode

Enum PrefetchMode 

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pub enum PrefetchMode {
    All,
    None,
}
Expand description

Controls how the VFS prefetches blob data on open.

Passed to UriBuilder::prefetch and emitted as the prefetch URI parameter.

§Example

use sqlite_objs::{UriBuilder, PrefetchMode};

let uri = UriBuilder::new("mydb.db", "acct", "cont")
    .sas_token("tok")
    .prefetch(PrefetchMode::None)
    .build();
assert!(uri.contains("prefetch=none"));

Variants§

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All

Download the entire blob into the local cache when the database is opened. This is the default behaviour and gives the best read performance for workloads that touch most pages.

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None

Lazy mode — only fetch individual pages from Azure on demand. Useful for large databases where you read a small subset of pages.

Trait Implementations§

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impl Clone for PrefetchMode

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fn clone(&self) -> PrefetchMode

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PrefetchMode

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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 PrefetchMode

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fn default() -> PrefetchMode

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

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

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for PrefetchMode

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

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

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impl Eq for PrefetchMode

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impl StructuralPartialEq for PrefetchMode

Auto Trait Implementations§

Blanket Implementations§

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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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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

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.