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DetailedUndoRecord

Struct DetailedUndoRecord 

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pub struct DetailedUndoRecord {
    pub offset: usize,
    pub record_type: UndoRecordType,
    pub undo_no: u64,
    pub table_id: u64,
    pub pk_fields: Vec<Vec<u8>>,
    pub trx_id: Option<u64>,
    pub roll_ptr: Option<[u8; 7]>,
    pub update_fields: Vec<UndoUpdateField>,
}
Expand description

A fully-parsed undo record with decoded fields.

Unlike UndoRecord which only captures offsets and type info, this struct decodes compressed integers (undo_no, table_id), primary key fields, transaction IDs, roll pointers, and update vector fields.

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§offset: usize

Byte offset of this record within the page.

§record_type: UndoRecordType

Undo operation type.

§undo_no: u64

Undo record sequence number within the transaction.

§table_id: u64

Table ID this record belongs to.

§pk_fields: Vec<Vec<u8>>

Raw primary key field bytes.

§trx_id: Option<u64>

Transaction ID (for DEL_MARK and UPD_EXIST records).

§roll_ptr: Option<[u8; 7]>

Roll pointer (7 bytes, for DEL_MARK and UPD_EXIST records).

§update_fields: Vec<UndoUpdateField>

Update vector fields (for UPD_EXIST/UPD_DEL/DEL_MARK).

Trait Implementations§

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impl Clone for DetailedUndoRecord

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fn clone(&self) -> DetailedUndoRecord

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DetailedUndoRecord

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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 Serialize for DetailedUndoRecord

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. 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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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

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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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> 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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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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type Output = T

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impl<T, U> TryFrom<U> for 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
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type Error = <U as TryFrom<T>>::Error

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fn vzip(self) -> V