Struct mz_persist_client::internal::state::HollowBatch
source · pub struct HollowBatch<T> {
pub desc: Description<T>,
pub len: usize,
pub(crate) parts: Vec<BatchPart<T>>,
pub(crate) run_splits: Vec<usize>,
pub(crate) run_meta: Vec<RunMeta>,
}
Expand description
A Batch but with the updates themselves stored externally.
Fields§
§desc: Description<T>
Describes the times of the updates in the batch.
len: usize
The number of updates in the batch.
parts: Vec<BatchPart<T>>
Pointers usable to retrieve the updates.
run_splits: Vec<usize>
Runs of sequential sorted batch parts, stored as indices into parts
.
ex.
parts=[p1, p2, p3], runs=[] --> run is [p1, p2, p2]
parts=[p1, p2, p3], runs=[1] --> runs are [p1] and [p2, p3]
parts=[p1, p2, p3], runs=[1, 2] --> runs are [p1], [p2], [p3]
run_meta: Vec<RunMeta>
Run-level metadata: the first entry has metadata for the first run, and so on. If there’s no corresponding entry for a particular run, it’s assumed to be RunMeta::default().
Implementations§
source§impl<T> HollowBatch<T>
impl<T> HollowBatch<T>
sourcepub(crate) fn new(
desc: Description<T>,
parts: Vec<BatchPart<T>>,
len: usize,
run_meta: Vec<RunMeta>,
run_splits: Vec<usize>,
) -> Self
pub(crate) fn new( desc: Description<T>, parts: Vec<BatchPart<T>>, len: usize, run_meta: Vec<RunMeta>, run_splits: Vec<usize>, ) -> Self
Construct an in-memory hollow batch from the given metadata.
This method checks that runs
is a sequence of valid indices into parts
. The caller
is responsible for ensuring that the defined runs are valid.
len
should represent the number of valid updates in the referenced parts.
sourcepub(crate) fn new_run(
desc: Description<T>,
parts: Vec<BatchPart<T>>,
len: usize,
) -> Self
pub(crate) fn new_run( desc: Description<T>, parts: Vec<BatchPart<T>>, len: usize, ) -> Self
Construct a batch of a single run with default metadata. Mostly interesting for tests.
sourcepub(crate) fn empty(desc: Description<T>) -> Self
pub(crate) fn empty(desc: Description<T>) -> Self
An empty hollow batch, representing no updates over the given desc.
pub(crate) fn runs(&self) -> impl Iterator<Item = (&RunMeta, &[BatchPart<T>])>
pub(crate) fn inline_bytes(&self) -> usize
pub fn is_empty(&self) -> bool
pub fn part_count(&self) -> usize
sourcepub fn encoded_size_bytes(&self) -> usize
pub fn encoded_size_bytes(&self) -> usize
The sum of the encoded sizes of all parts in the batch.
source§impl<T: Timestamp + TotalOrder> HollowBatch<T>
impl<T: Timestamp + TotalOrder> HollowBatch<T>
Trait Implementations§
source§impl<T: Clone> Clone for HollowBatch<T>
impl<T: Clone> Clone for HollowBatch<T>
source§fn clone(&self) -> HollowBatch<T>
fn clone(&self) -> HollowBatch<T>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl<T: Debug> Debug for HollowBatch<T>
impl<T: Debug> Debug for HollowBatch<T>
source§impl<T: Ord> Ord for HollowBatch<T>
impl<T: Ord> Ord for HollowBatch<T>
source§impl<T: PartialEq> PartialEq for HollowBatch<T>
impl<T: PartialEq> PartialEq for HollowBatch<T>
source§impl<T: Ord> PartialOrd for HollowBatch<T>
impl<T: Ord> PartialOrd for HollowBatch<T>
source§impl<T: Timestamp + Codec64> RustType<ProtoHollowBatch> for HollowBatch<T>
impl<T: Timestamp + Codec64> RustType<ProtoHollowBatch> for HollowBatch<T>
source§fn into_proto(&self) -> ProtoHollowBatch
fn into_proto(&self) -> ProtoHollowBatch
Self
into a Proto
value.source§fn from_proto(proto: ProtoHollowBatch) -> Result<Self, TryFromProtoError>
fn from_proto(proto: ProtoHollowBatch) -> Result<Self, TryFromProtoError>
source§fn into_proto_owned(self) -> Proto
fn into_proto_owned(self) -> Proto
Self::into_proto
that types can
optionally implement, otherwise, the default implementation
delegates to Self::into_proto
.source§impl<T: Serialize> Serialize for HollowBatch<T>
impl<T: Serialize> Serialize for HollowBatch<T>
impl<T: Eq> Eq for HollowBatch<T>
impl<T> StructuralPartialEq for HollowBatch<T>
Auto Trait Implementations§
impl<T> Freeze for HollowBatch<T>where
T: Freeze,
impl<T> RefUnwindSafe for HollowBatch<T>where
T: RefUnwindSafe,
impl<T> Send for HollowBatch<T>where
T: Send,
impl<T> Sync for HollowBatch<T>where
T: Sync,
impl<T> Unpin for HollowBatch<T>where
T: Unpin,
impl<T> UnwindSafe for HollowBatch<T>where
T: RefUnwindSafe + UnwindSafe,
Blanket Implementations§
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
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.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§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
source§fn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
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> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
T
in a tonic::Request
source§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<T> PreferredContainer for T
impl<T> PreferredContainer for T
source§impl<T> ProgressEventTimestamp for T
impl<T> ProgressEventTimestamp for T
source§impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
impl<P, R> ProtoType<R> for Pwhere
R: RustType<P>,
source§fn into_rust(self) -> Result<R, TryFromProtoError>
fn into_rust(self) -> Result<R, TryFromProtoError>
RustType::from_proto
.source§fn from_rust(rust: &R) -> P
fn from_rust(rust: &R) -> P
RustType::into_proto
.source§impl<'a, S, T> Semigroup<&'a S> for Twhere
T: Semigroup<S>,
impl<'a, S, T> Semigroup<&'a S> for Twhere
T: Semigroup<S>,
source§fn plus_equals(&mut self, rhs: &&'a S)
fn plus_equals(&mut self, rhs: &&'a S)
std::ops::AddAssign
, for types that do not implement AddAssign
.