Package org.duckdb

Interface DuckDBScalarFunction

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DuckDBScalarFunction

Method Summary

Modifier and Type	Method	Description
void	apply(DuckDBDataChunkReader input, DuckDBWritableVector output)	Processes a full input chunk and writes one output value per row directly into the DuckDB output vector.

Method Details

apply

void apply(DuckDBDataChunkReader input,
 DuckDBWritableVector output)
    throws Exception

Processes a full input chunk and writes one output value per row directly into the DuckDB output vector.

The context and all wrappers returned from it are valid only for the duration of the callback and must not be retained.

Parameters:

input - data chunk with function arguments

output - vector to write function results into

Throws:

Exception - when function execution fails