pub struct LiteQueryEngine<S: StorageEngine> { /* private fields */ }Expand description
Lite-side query engine wrapping DataFusion.
Registered collections appear as tables. SQL queries execute entirely in-process against the Loro CRDT state, strict Binary Tuple store, or columnar compressed segments.
Implementations§
Source§impl<S: StorageEngine> LiteQueryEngine<S>
impl<S: StorageEngine> LiteQueryEngine<S>
Sourcepub fn new(
crdt: Arc<Mutex<CrdtEngine>>,
strict: Arc<Mutex<StrictEngine<S>>>,
columnar: Arc<Mutex<ColumnarEngine<S>>>,
htap: Arc<Mutex<HtapBridge>>,
storage: Arc<S>,
) -> Self
pub fn new( crdt: Arc<Mutex<CrdtEngine>>, strict: Arc<Mutex<StrictEngine<S>>>, columnar: Arc<Mutex<ColumnarEngine<S>>>, htap: Arc<Mutex<HtapBridge>>, storage: Arc<S>, ) -> Self
Create a new query engine.
Sourcepub fn register_collection(&self, name: &str)
pub fn register_collection(&self, name: &str)
Register a collection as a queryable table.
Call this before executing SQL that references the collection.
For auto-registration, call register_all_collections().
Sourcepub fn register_strict_collection(&self, name: &str)
pub fn register_strict_collection(&self, name: &str)
Register a strict collection as a queryable table.
Sourcepub fn register_all_collections(&self)
pub fn register_all_collections(&self)
Register all existing collections as tables (both CRDT and strict).
Sourcepub fn register_columnar_collection(&self, name: &str)
pub fn register_columnar_collection(&self, name: &str)
Register a columnar collection as a queryable table.
Sourcepub async fn execute_sql(&self, sql: &str) -> Result<QueryResult, LiteError>
pub async fn execute_sql(&self, sql: &str) -> Result<QueryResult, LiteError>
Execute a SQL query and return results.
DDL statements (CREATE/DROP COLLECTION) are intercepted and handled directly. All other statements are passed to DataFusion.
Auto Trait Implementations§
impl<S> !RefUnwindSafe for LiteQueryEngine<S>
impl<S> !UnwindSafe for LiteQueryEngine<S>
impl<S> Freeze for LiteQueryEngine<S>
impl<S> Send for LiteQueryEngine<S>
impl<S> Sync for LiteQueryEngine<S>
impl<S> Unpin for LiteQueryEngine<S>
impl<S> UnsafeUnpin for LiteQueryEngine<S>where
Arc<Mutex<StrictEngine<S>>>: UnsafeUnpin,
Arc<Mutex<ColumnarEngine<S>>>: UnsafeUnpin,
Arc<S>: UnsafeUnpin,
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