Struct StatisticsMaintenance 

pub struct StatisticsMaintenance { /* private fields */ }

Transactional maintenance metadata. Existing column statistics remain available while this record tracks changes awaiting a replacement.

Implementations

impl StatisticsMaintenance

pub const KEY_PREFIX: &'static str = "uqa.statistics.maintenance.v1:"

pub fn key(table: &str) -> String

pub fn load( catalog: &dyn CatalogFacade, table: &str, ) -> StorageBackendResult<Self>

pub fn load_for( catalog: &dyn CatalogFacade, table: &str, object_id: [u8; 16], ) -> StorageBackendResult<Self>

pub fn save( &self, catalog: &dyn CatalogFacade, table: &str, ) -> StorageBackendResult<()>

pub fn dirty(&self) -> bool

pub fn missing(&self, statistics_empty: bool) -> bool

pub fn invalidates_existing_statistics(&self) -> bool

pub fn due(&self, missing: bool, now: u64, statistics_format: u32) -> bool

pub fn analyzed_for( catalog: &dyn CatalogFacade, table: &str, object_id: [u8; 16], rows: u64, statistics_format: u32, ) -> StorageBackendResult<()>

pub fn record_changes( &mut self, object_id: [u8; 16], count: u64, previous_rows: Option<u64>, now: u64, ) -> StorageBackendResult<()>

pub fn encode( &self, control: &StorageReadControl, ) -> VersionResult<BudgetedVec<u8>>

Encode the fixed-size state under the same budget and cancellation control as its record.

Trait Implementations

impl Clone for StatisticsMaintenance

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StatisticsMaintenance

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

Formats the value using the given formatter.

impl Default for StatisticsMaintenance

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StatisticsMaintenance

where StatisticsMaintenance: Default,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for StatisticsMaintenance

impl PartialEq for StatisticsMaintenance

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for StatisticsMaintenance

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StatisticsMaintenance