Struct ella_engine::schema::EllaSchema

pub struct EllaSchema { /* private fields */ }

Implementations

impl EllaSchema

pub fn id(&self) -> &SchemaId<'static>

pub fn tables(&self) -> Vec<Arc<EllaTable>>

pub fn table<'a>(&self, id: impl Into<Id<'a>>) -> Option<Arc<EllaTable>>

pub async fn register<'a>( &self, id: impl Into<Id<'a>>, table: Arc<EllaTable> ) -> Result<()>

pub async fn drop_table<'a>( &self, id: impl Into<Id<'a>>, if_exists: bool ) -> Result<()>

pub async fn drop_topic<'a>( &self, id: impl Into<Id<'a>>, if_exists: bool ) -> Result<()>

pub async fn drop_view<'a>( &self, id: impl Into<Id<'a>>, if_exists: bool ) -> Result<()>

pub fn is_empty(&self) -> bool

Trait Implementations

impl Debug for EllaSchema

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

Formats the value using the given formatter.

impl SchemaProvider for EllaSchema

fn as_any(&self) -> &dyn Any

Returns the schema provider as Any so that it can be downcast to a specific implementation.

fn table_names(&self) -> Vec<String>

Retrieves the list of available table names in this schema.

fn table<'life0, 'life1, 'async_trait>( &'life0 self, name: &'life1 str ) -> Pin<Box<dyn Future<Output = Option<Arc<dyn TableProvider>>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Retrieves a specific table from the schema by name, provided it exists.

fn register_table( &self, _name: String, _table: Arc<dyn TableProvider> ) -> Result<Option<Arc<dyn TableProvider>>, DataFusionError>

If supported by the implementation, adds a new table to this schema. If a table of the same name existed before, it returns “Table already exists” error.

fn deregister_table( &self, _name: &str ) -> Result<Option<Arc<dyn TableProvider>>, DataFusionError>

If supported by the implementation, removes an existing table from this schema and returns it. If no table of that name exists, returns Ok(None).

fn table_exist(&self, name: &str) -> bool

If supported by the implementation, checks the table exist in the schema provider or not. If no matched table in the schema provider, return false. Otherwise, return true.