Package io.micronaut.core.util

Class ArgumentUtils

java.lang.Object

io.micronaut.core.util.ArgumentUtils

public class ArgumentUtils
extends Object

Utility methods for checking method argument values.

Since:

1.0

Author:

Graeme Rocher

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ArgumentUtils.ArgumentCheck<T>	Allows producing error messages.
static interface	ArgumentUtils.Check	Functional interface the check a condition.

Constructor Summary

Constructors

Constructor	Description
ArgumentUtils()

Method Summary

Modifier and Type	Method	Description
static ArgumentUtils.ArgumentCheck	check(ArgumentUtils.Check check)	Perform a check on an argument.
static <T> ArgumentUtils.ArgumentCheck	check(String name, T value)	Perform a check on an argument.
static <T> T	requireNonNull(String name, T value)	Adds a check that the given number is not null.
static int	requirePositive(String name, int value)	Adds a check that the given number is positive.
static @NonNull Number	requirePositive(String name, Number value)	Adds a check that the given number is positive.
static void	validateArguments(@NonNull Described described, @NonNull Argument<?>[] arguments, @NonNull Object[] values)	Validates the given values are appropriate for the given arguments.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ArgumentUtils

public ArgumentUtils()

Method Details

requirePositive

@NonNull
public static @NonNull Number requirePositive(String name,
 Number value)

Adds a check that the given number is positive.

Parameters:

name - The name of the argument

value - The value

Returns:

The value

Throws:

IllegalArgumentException - if the argument is not positive

requireNonNull

public static <T> T requireNonNull(String name,
 T value)

Adds a check that the given number is not null.

Type Parameters:

T - The generic type

Parameters:

name - The name of the argument

value - The value

Returns:

The value

Throws:

NullPointerException - if the argument is null

requirePositive

public static int requirePositive(String name,
 int value)

Adds a check that the given number is positive.

Parameters:

name - The name of the argument

value - The value

Returns:

The value

Throws:

IllegalArgumentException - if the argument is not positive

check

public static ArgumentUtils.ArgumentCheck check(ArgumentUtils.Check check)

Perform a check on an argument.

Parameters:

check - The check

Returns:

The ArgumentUtils.ArgumentCheck

check

public static <T> ArgumentUtils.ArgumentCheck check(String name,
 T value)

Perform a check on an argument.

Type Parameters:

T - The value type

Parameters:

name - The name of the argument

value - The value of the argument

Returns:

The ArgumentUtils.ArgumentCheck

validateArguments

public static void validateArguments(@NonNull
 @NonNull Described described,
 @NonNull
 @NonNull Argument<?>[] arguments,
 @NonNull
 @NonNull Object[] values)

Validates the given values are appropriate for the given arguments.

Parameters:

described - The described instance

arguments - The arguments

values - The values