com.github.robtimus.sql.function

Interface ToDoubleSQLFunction<T>

Type Parameters:

T - The type of the input to the function.

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 ToDoubleSQLFunction<T>

Represents a function that produces a double-valued result. This is the SQLException throwing equivalent of ToDoubleFunction.

Method Summary

Modifier and Type	Method and Description
double	applyAsDouble(T value) Applies this function to the given argument.
static <T> ToDoubleSQLFunction<T>	checked(ToDoubleFunction<? super T> function) Returns a function that applies the function function to its input, and unwraps any UncheckedSQLException that is thrown by throwing its cause.
static <T> ToDoubleFunction<T>	unchecked(ToDoubleSQLFunction<? super T> function) Returns a function that applies the function function to its input, and wraps any SQLException that is thrown in an UncheckedSQLException.

Method Detail

applyAsDouble

double applyAsDouble(T value)
              throws SQLException

Applies this function to the given argument.

Parameters:

value - The function argument.

Returns:

The function result.

Throws:

SQLException - If an SQL error occurs.

unchecked

static <T> ToDoubleFunction<T> unchecked(ToDoubleSQLFunction<? super T> function)

Returns a function that applies the function function to its input, and wraps any SQLException that is thrown in an UncheckedSQLException.

Type Parameters:

T - The type of the first argument to the function.

Parameters:

function - The function to apply when the returned function is applied.

Returns:

A function that applies the function function to its input, and wraps any SQLException that is thrown in an UncheckedSQLException.

Throws:

NullPointerException - If function is null.

checked

static <T> ToDoubleSQLFunction<T> checked(ToDoubleFunction<? super T> function)

Returns a function that applies the function function to its input, and unwraps any UncheckedSQLException that is thrown by throwing its cause.

Type Parameters:

T - The type of the first argument to the function.

Parameters:

function - The function to apply when the returned function is applied.

Returns:

A function that applies the function function to its input, and unwraps any UncheckedSQLException that is thrown.

Throws:

NullPointerException - If function is null.