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LegacyRelationReadBudget

projectatlas_db

Struct LegacyRelationReadBudget 

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pub struct LegacyRelationReadBudget { /* private fields */ }
Expand description

Validated resource envelope for one complete legacy relation array.

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impl LegacyRelationReadBudget

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pub const MAX_QUERY_BYTES: usize = 1_024

Maximum UTF-8 query bytes before adding the two LIKE wildcards.

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pub const MAX_ROWS: usize = 200

Absolute compatibility-array row ceiling.

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pub const MAX_INTERMEDIATE_BYTES: u64

Absolute decoded/intermediate ceiling.

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pub const MAX_INSTRUCTIONS: u64 = 100_000

Shared instruction ceiling across candidate discovery and hydration.

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pub const MAX_DEADLINE: Duration

Maximum cooperative query duration.

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pub fn new( rows: usize, deadline: Duration, intermediate_bytes: u64, ) -> DbResult<Self>

Validate a complete-array resource envelope.

§Arguments

rows bounds the complete result; deadline and intermediate_bytes may tighten the absolute query ceilings.

§Returns

A validated read budget.

§Errors

Rejects zero or oversized bounds before database work.

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impl Clone for LegacyRelationReadBudget

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fn clone(&self) -> LegacyRelationReadBudget

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 LegacyRelationReadBudget

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impl Debug for LegacyRelationReadBudget

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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<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> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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.