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SqlitePlanner

Struct SqlitePlanner 

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pub struct SqlitePlanner<'a> { /* private fields */ }
Expand description

The SQLite planner over one repo of the store.

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impl<'a> SqlitePlanner<'a>

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pub fn new(conn: &'a Connection, repo_id: &str) -> Self

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pub fn try_plan(&self, query: &Query, params: &[Value]) -> Result<Option<Plan>>

Plan query: Ok(None) when the shape declines, Ok(Some(plan)) with the produced rows (tagged like the context’s root rows) and the residual, Err when the statement itself failed (a store error, not a decline — the runner reports it rather than silently rescanning).

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impl QueryPlanner for SqlitePlanner<'_>

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fn plan(&self, query: &Query, params: &[Value]) -> Option<Plan>

The seam’s shape: a failed statement declines (the engine falls back to a full scan). The runner uses Self::try_plan to surface it.

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for SqlitePlanner<'a>

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impl<'a> !Send for SqlitePlanner<'a>

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impl<'a> !Sync for SqlitePlanner<'a>

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impl<'a> !UnwindSafe for SqlitePlanner<'a>

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impl<'a> Freeze for SqlitePlanner<'a>

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impl<'a> Unpin for SqlitePlanner<'a>

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impl<'a> UnsafeUnpin for SqlitePlanner<'a>

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> 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> 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.