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WriteLog

Enum WriteLog 

Source
pub enum WriteLog {
    Inserted {
        table: String,
        row_id: RowId,
    },
    Updated {
        table: String,
        row_id: RowId,
        old_row: Row,
    },
    Deleted {
        table: String,
        row_id: RowId,
        row: Row,
    },
}
Expand description

写操作日志(用于回滚)

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§

Inserted

插入前的状态(回滚时需要删除)

Fields

§table: String
§row_id: RowId
§

Updated

更新前的状态(回滚时需要恢复)

Fields

§table: String
§row_id: RowId
§old_row: Row
§

Deleted

删除前的状态(回滚时需要重新插入)

Fields

§table: String
§row_id: RowId
§row: Row

Trait Implementations§

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impl Debug for WriteLog

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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> 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, 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.