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SSTableStatistics

cqlite_core::parser::statistics

Struct SSTableStatistics

pub struct SSTableStatistics {
    pub header: StatisticsHeader,
    pub row_stats: RowStatistics,
    pub timestamp_stats: TimestampStatistics,
    pub column_stats: Vec<ColumnStatistics>,
    pub table_stats: TableStatistics,
    pub partition_stats: PartitionStatistics,
    pub compression_stats: CompressionStatistics,
    pub metadata: HashMap<String, String>,
    pub serialization_header_columns: Vec<ColumnInfo>,
    pub serialization_header_partition_keys: Vec<ColumnInfo>,
    pub serialization_header_clustering_keys: Vec<ColumnInfo>,
}

Expand description

Comprehensive SSTable statistics extracted from Statistics.db

Fields§

§header: StatisticsHeader

Header information

§row_stats: RowStatistics

Row count statistics

§timestamp_stats: TimestampStatistics

Timestamp range information

§column_stats: Vec<ColumnStatistics>

Column-level statistics

§table_stats: TableStatistics

Table-level aggregated statistics

§partition_stats: PartitionStatistics

Partition size distribution

§compression_stats: CompressionStatistics

Compression statistics

§metadata: HashMap<String, String>

Additional metadata

§serialization_header_columns: Vec<ColumnInfo>

SerializationHeader columns (Issue #163)

Column definitions parsed from SerializationHeader embedded in nb-format Statistics.db files. Used for schema extraction in V5CompressedLegacy format. Empty if SerializationHeader not found in Statistics.db.

§serialization_header_partition_keys: Vec<ColumnInfo>

Partition key definitions extracted from SerializationHeader (Issue #195)

§serialization_header_clustering_keys: Vec<ColumnInfo>

Clustering key definitions extracted from SerializationHeader (Issue #195)

Trait Implementations§

impl Clone for SSTableStatistics

fn clone(&self) -> SSTableStatistics

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

impl Debug for SSTableStatistics

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

Formats the value using the given formatter. Read more

impl<'de> Deserialize<'de> for SSTableStatistics

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl Serialize for SSTableStatistics

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

Serialize this value into the given Serde serializer. Read more

Auto Trait Implementations§

impl Freeze for SSTableStatistics

impl RefUnwindSafe for SSTableStatistics

impl Send for SSTableStatistics

impl Sync for SSTableStatistics

impl Unpin for SSTableStatistics

impl UnsafeUnpin for SSTableStatistics

impl UnwindSafe for SSTableStatistics

Blanket Implementations§

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

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

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

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

impl<T> Pointable for T

const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.