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DPccp

uqa_planner::join_enumerator

Struct DPccp 

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pub struct DPccp<'g> { /* private fields */ }
Expand description

DPccp join-order optimiser. Public so callers that need the cancellation-friendly stages (optimize, find_connected_components) can drive them directly.

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impl<'g> DPccp<'g>

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pub fn new(graph: &'g JoinGraph) -> Self

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pub fn with_cost_estimator( graph: &'g JoinGraph, cost_estimator: CostEstimator, ) -> Self

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pub fn optimize(self) -> Option<JoinPlan>

Find the optimal join plan for the full relation set. Falls back to greedy for large queries. Returns None for empty graphs.

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impl<'g> Freeze for DPccp<'g>

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impl<'g> RefUnwindSafe for DPccp<'g>

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impl<'g> Send for DPccp<'g>

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impl<'g> Sync for DPccp<'g>

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impl<'g> Unpin for DPccp<'g>

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impl<'g> UnsafeUnpin for DPccp<'g>

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impl<'g> UnwindSafe for DPccp<'g>

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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> ErasedDestructor for T
where T: 'static,

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.