com.github.robtimus.sql.function

Interface UnarySQLOperator<T>

Type Parameters:

T - The type of the operand and result of the operator.

All Superinterfaces:

SQLFunction<T,T>

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 UnarySQLOperator<T>
extends SQLFunction<T,T>

Represents an operation on a single operand that produces a result of the same type as its operand. This is the SQLException throwing equivalent of UnaryOperator.

Method Summary

Modifier and Type	Method and Description
static <T> UnarySQLOperator<T>	checked(UnaryOperator<T> operator) Returns a unary operator that applies the operator operator to its input, and unwraps any UncheckedSQLException that is thrown by throwing its cause.
static <T> UnarySQLOperator<T>	identity() Returns a unary operator that always returns its input argument.
static <T> UnaryOperator<T>	unchecked(UnarySQLOperator<T> operator) Returns a unary operator that applies the operator operator to its input, and wraps any SQLException that is thrown in an UncheckedSQLException.

Methods inherited from interface com.github.robtimus.sql.function.SQLFunction

andThen, apply, checked, compose, unchecked

Method Detail

identity

static <T> UnarySQLOperator<T> identity()

Returns a unary operator that always returns its input argument.

Specified by:

identity in interface SQLFunction<T,T>

Type Parameters:

T - The type of the input and output of the operator.

Returns:

A unary operator that always returns its input argument.

unchecked

static <T> UnaryOperator<T> unchecked(UnarySQLOperator<T> operator)

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

Type Parameters:

T - The type of the input and output of the operator.

Parameters:

operator - The unary operator to apply when the returned unary operator is applied.

Returns:

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

Throws:

NullPointerException - If operator is null.

checked

static <T> UnarySQLOperator<T> checked(UnaryOperator<T> operator)

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

Type Parameters:

T - The type of the input and output of the operator.

Parameters:

operator - The unary operator to apply when the returned unary operator is applied.

Returns:

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

Throws:

NullPointerException - If operator is null.