Struct DataRegion

pub struct DataRegion {
    mito: MitoEngine,
}

This is a generic handler like MetricEngine. It will handle all the data related operations across physical tables. Thus every operation should be associated to a RegionId, which is the physical table id + region sequence. This handler will transform the region group by itself.

Fields

mito: MitoEngine

Implementations

impl DataRegion

pub fn new(mito: MitoEngine) -> Self

pub async fn add_columns( &self, region_id: RegionId, columns: Vec<ColumnMetadata>, index_options: IndexOptions, ) -> Result<()>

Submit an alter request to underlying physical region.

This method will change the nullability of those given columns. [SemanticType::Tag] will become nullable column as it’s shared between logical regions.

Invoker don’t need to set up or verify the column id. This method will adjust it using underlying schema.

This method will also set the nullable marker to true. All of those change are applies to columns in-place.

async fn assemble_alter_request( &self, region_id: RegionId, columns: Vec<ColumnMetadata>, index_options: IndexOptions, ) -> Result<RegionRequest>

Generate wrapped RegionAlterRequest with given ColumnMetadata. This method will modify columns in-place.

pub async fn write_data( &self, region_id: RegionId, request: RegionPutRequest, ) -> Result<AffectedRows>

pub async fn physical_columns( &self, physical_region_id: RegionId, ) -> Result<Vec<ColumnMetadata>>

pub async fn alter_region_options( &self, region_id: RegionId, request: RegionAlterRequest, ) -> Result<AffectedRows>