org.apache.flink.table.data.utils

接口 CastExecutor<IN,OUT>

类型参数:

IN - Input internal type

OUT - Output internal type

函数接口:

这是一个函数接口, 因此可用作 lambda 表达式或方法引用的赋值目标。

@Internal
 @FunctionalInterface
public interface CastExecutor<IN,OUT>

Interface to model a function that performs the casting of a value from one type to another.

方法概要

限定符和类型	方法和说明
OUT	cast(IN value) Cast the input value.

方法详细资料

cast

@Nullable
OUT cast(@Nullable
                   IN value)
            throws TableRuntimeException

Cast the input value. The output is null only and only if the input is null. The method throws an exception if something goes wrong when casting.

参数:

value - Input value.

抛出:

TableRuntimeException