AsyncLookupFunctionProvider to implement asynchronous lookup
table.@PublicEvolving @Deprecated public interface AsyncTableFunctionProvider<T> extends LookupTableSource.LookupRuntimeProvider
AsyncTableFunction instance as a runtime implementation for LookupTableSource.
The runtime will call the function with values describing the table's lookup keys (in the
order of declaration in LookupTableSource.LookupContext.getKeys()).
By default, input and output DataTypes of the AsyncTableFunction are derived
similar to other UserDefinedFunctions. However, for convenience, in a LookupTableSource the output type can simply be a Row or RowData in which case
the input and output types are derived from the table's schema with default conversion.
| Modifier and Type | Method and Description |
|---|---|
AsyncTableFunction<T> |
createAsyncTableFunction()
Deprecated.
Creates a
AsyncTableFunction instance. |
static <T> AsyncTableFunctionProvider<T> |
of(AsyncTableFunction<T> asyncTableFunction)
Deprecated.
Helper method for creating a static provider.
|
static <T> AsyncTableFunctionProvider<T> of(AsyncTableFunction<T> asyncTableFunction)
AsyncTableFunction<T> createAsyncTableFunction()
AsyncTableFunction instance.Copyright © 2014–2025 The Apache Software Foundation. All rights reserved.