pub struct Header { /* private fields */ }Expand description
Shared immutable metadata header embedded into AI objects.
Implementations§
Source§impl Header
impl Header
Sourcepub fn new(
object_type: ObjectType,
created_by: ActorRef,
) -> Result<Self, String>
pub fn new( object_type: ObjectType, created_by: ActorRef, ) -> Result<Self, String>
Build a fresh header for a new AI object instance.
Sourcepub fn object_type(&self) -> &ObjectType
pub fn object_type(&self) -> &ObjectType
Return the persisted object kind.
Sourcepub fn created_at(&self) -> DateTime<Utc>
pub fn created_at(&self) -> DateTime<Utc>
Return the creation timestamp in UTC.
Sourcepub fn created_by(&self) -> &ActorRef
pub fn created_by(&self) -> &ActorRef
Return the actor that created the object.
Sourcepub fn set_version(&mut self, version: u8) -> Result<(), String>
pub fn set_version(&mut self, version: u8) -> Result<(), String>
Override the header schema version for migration/testing paths.
Version 0 is reserved as invalid so callers cannot accidentally
produce an uninitialized-looking header.
Sourcepub fn checksum(&self) -> IntegrityHash
pub fn checksum(&self) -> IntegrityHash
Compute an integrity hash over the serialized header payload.
This is useful when callers need a compact fingerprint of the immutable metadata without hashing the full enclosing object.
Trait Implementations§
Source§impl<'de> Deserialize<'de> for Header
impl<'de> Deserialize<'de> for Header
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
impl Eq for Header
impl StructuralPartialEq for Header
Auto Trait Implementations§
impl Freeze for Header
impl RefUnwindSafe for Header
impl Send for Header
impl Sync for Header
impl Unpin for Header
impl UnsafeUnpin for Header
impl UnwindSafe for Header
Blanket Implementations§
Source§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
Source§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
Source§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moreSource§impl<T> LayoutRaw for T
impl<T> LayoutRaw for T
Source§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.
Source§impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
Source§unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool
Returns whether the given value has been niched. Read more
Source§fn resolve_niched(out: Place<NichedOption<T, N1>>)
fn resolve_niched(out: Place<NichedOption<T, N1>>)
Writes data to
out indicating that a T is niched.Source§impl<T> Pointable for T
impl<T> Pointable for T
Source§impl<T> ValueSize for T
impl<T> ValueSize for T
Source§fn value_size(&self) -> usize
fn value_size(&self) -> usize
The size of this value in bytes, excluding allocated data. Read more
Source§fn value_size_sum_iter<'item>(iterator: impl Iterator<Item = &'item T>) -> usizewhere
T: 'item,
fn value_size_sum_iter<'item>(iterator: impl Iterator<Item = &'item T>) -> usizewhere
T: 'item,
The total sum of the sizes of all values in the given iterator, in
bytes. This is default-implemented by computing ValueSize::value_size
on every element and summing them. For Sized types, a more potentially
efficient implementation using Iterator::count is provided. If you are
implementing this trait manually, it is unlikely to be more efficient to
provide a manual implementation here. Read more
Source§fn value_size_sum_exact_size_iter<'item>(
iterator: impl ExactSizeIterator<Item = &'item T>,
) -> usizewhere
T: 'item,
fn value_size_sum_exact_size_iter<'item>(
iterator: impl ExactSizeIterator<Item = &'item T>,
) -> usizewhere
T: 'item,
The total sum of the sizes of all values in the given
exact-size-iterator, in bytes. This is default-implemented by using
ValueSize::value_size_sum_iter. For Sized types, a usually more
efficient implementation using ExactSizeIterator::len is provided. If
you are implementing this trait manually, it is unlikely to be more
efficient to provide a manual implementation here. Read more