metric_engine::engine::state

Struct MetricEngineState

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pub(crate) struct MetricEngineState {
    physical_regions: HashMap<RegionId, PhysicalRegionState>,
    logical_regions: HashMap<RegionId, RegionId>,
    logical_columns: HashMap<RegionId, Vec<ColumnMetadata>>,
}
Expand description

Internal states of metric engine

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§physical_regions: HashMap<RegionId, PhysicalRegionState>

Physical regions states.

§logical_regions: HashMap<RegionId, RegionId>

Mapping from logical region id to physical region id.

§logical_columns: HashMap<RegionId, Vec<ColumnMetadata>>

Cache for the column metadata of logical regions. The column order is the same with the order in the metadata, which is alphabetically ordered on column name.

Implementations§

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impl MetricEngineState

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pub fn add_physical_region( &mut self, physical_region_id: RegionId, physical_columns: HashMap<String, ColumnId>, primary_key_encoding: PrimaryKeyEncoding, options: PhysicalRegionOptions, )

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pub fn add_physical_columns( &mut self, physical_region_id: RegionId, physical_columns: impl IntoIterator<Item = (String, ColumnId)>, )

§Panic

if the physical region does not exist

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pub fn add_logical_regions( &mut self, physical_region_id: RegionId, logical_region_ids: impl IntoIterator<Item = RegionId>, )

§Panic

if the physical region does not exist

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pub fn invalid_logical_regions_cache( &mut self, logical_region_ids: impl IntoIterator<Item = RegionId>, )

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pub fn add_logical_region( &mut self, physical_region_id: RegionId, logical_region_id: RegionId, )

§Panic

if the physical region does not exist

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pub fn set_logical_columns( &mut self, logical_region_id: RegionId, columns: Vec<ColumnMetadata>, )

Replace the logical columns of the logical region with given columns.

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pub fn get_physical_region_id( &self, logical_region_id: RegionId, ) -> Option<RegionId>

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pub fn logical_columns(&self) -> &HashMap<RegionId, Vec<ColumnMetadata>>

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pub fn physical_region_states(&self) -> &HashMap<RegionId, PhysicalRegionState>

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pub fn exist_physical_region(&self, physical_region_id: RegionId) -> bool

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pub fn get_primary_key_encoding( &self, physical_region_id: RegionId, ) -> Option<PrimaryKeyEncoding>

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pub fn logical_regions(&self) -> &HashMap<RegionId, RegionId>

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pub fn remove_physical_region( &mut self, physical_region_id: RegionId, ) -> Result<()>

Remove all data that are related to the physical region id.

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pub fn remove_logical_region( &mut self, logical_region_id: RegionId, ) -> Result<()>

Remove all data that are related to the logical region id.

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pub fn is_logical_region_exist(&self, logical_region_id: RegionId) -> bool

Trait Implementations§

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impl Default for MetricEngineState

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fn default() -> MetricEngineState

Returns the “default value” for a type. Read more

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