Struct TransactionGuard

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pub struct TransactionGuard<'a> { /* private fields */ }

Expand description

Transaction safety wrapper for automatic rollback on errors

This wrapper holds onto a connection wrapper for the duration of a transaction. Note: Due to lifetime constraints, this is typically used within a function scope.

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impl<'a> TransactionGuard<'a>

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pub fn new(conn: ConnectionWrapper<'a>) -> Result<Self, SqliteGraphError>

Start a new transaction with IMMEDIATE mode for better write performance

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pub fn commit(self, graph: &SqliteGraph) -> Result<(), SqliteGraphError>

Commit the transaction with cache invalidation and snapshot update

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pub fn conn(&self) -> &ConnectionWrapper<'a>

Get reference to the underlying connection wrapper

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pub fn execute<F, R>( self, graph: &SqliteGraph, f: F, ) -> Result<R, SqliteGraphError>
where F: FnOnce(&ConnectionWrapper<'a>) -> Result<R, SqliteGraphError>,

Execute a function with automatic rollback on error

Trait Implementations§

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impl<'a> Drop for TransactionGuard<'a>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<'a> !UnwindSafe for TransactionGuard<'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 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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