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SchemaMigrationRowOp

Struct SchemaMigrationRowOp 

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pub struct SchemaMigrationRowOp { /* private fields */ }
Expand description

SchemaMigrationRowOp

SchemaMigrationRowOp is the schema-evolution-owned row rewrite description. It carries a canonical entity target and raw row bytes, then the planner converts it into the lower-level migration row-op DTO only after validation.

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impl SchemaMigrationRowOp

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pub const fn new( target: SchemaMigrationEntityTarget, key: Vec<u8>, before: Option<Vec<u8>>, after: Option<Vec<u8>>, ) -> Self

Build one explicit row rewrite for a schema migration.

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pub const fn insert( target: SchemaMigrationEntityTarget, key: Vec<u8>, after: Vec<u8>, ) -> Self

Build one insert-style row rewrite for a schema migration.

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pub const fn target(&self) -> SchemaMigrationEntityTarget

Return the canonical entity target for this row rewrite.

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pub const fn key(&self) -> &[u8]

Borrow encoded raw data-key bytes.

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pub fn before(&self) -> Option<&[u8]>

Borrow the optional before-image row payload.

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pub fn after(&self) -> Option<&[u8]>

Borrow the optional after-image row payload.

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impl Clone for SchemaMigrationRowOp

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fn clone(&self) -> SchemaMigrationRowOp

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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<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> 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

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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.
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impl<V, T> VZip<V> for T
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fn vzip(self) -> V