com.amazonaws.util

Class ValidationUtils

java.lang.Object

com.amazonaws.util.ValidationUtils

public class ValidationUtils
extends Object

Useful utilities to validate dependencies

Constructor Summary

Constructors

Constructor and Description
ValidationUtils()

Method Summary

Modifier and Type	Method and Description
static void	assertAllAreNull(String messageIfNull, Object... objects) Asserts that all of the objects are null.
static int	assertIsPositive(int num, String fieldName) Asserts that the given number is positive (non-negative and non-zero).
static <T> T[]	assertNotEmpty(T[] array, String fieldName)
static <T extends Collection<?>> T	assertNotEmpty(T collection, String fieldName)
static <T> T	assertNotNull(T object, String fieldName) Asserts that the given object is non-null and returns it.
static String	assertStringNotEmpty(String string, String fieldName)

Methods inherited from class java.lang.Object

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

Constructor Detail

ValidationUtils

public ValidationUtils()

Method Detail

assertNotNull

public static <T> T assertNotNull(T object,
                                  String fieldName)
                           throws IllegalArgumentException

Asserts that the given object is non-null and returns it.

Parameters:

object - Object to assert on

fieldName - Field name to display in exception message if null

Returns:

Object if non null

Throws:

IllegalArgumentException - If object was null

assertAllAreNull

public static void assertAllAreNull(String messageIfNull,
                                    Object... objects)
                             throws IllegalArgumentException

Asserts that all of the objects are null.

Throws:

IllegalArgumentException - if any object provided was NOT null.

assertIsPositive

public static int assertIsPositive(int num,
                                   String fieldName)

Asserts that the given number is positive (non-negative and non-zero).

Parameters:

num - Number to validate

fieldName - Field name to display in exception message if not positive.

Returns:

Number if positive.

assertNotEmpty

public static <T extends Collection<?>> T assertNotEmpty(T collection,
                                                         String fieldName)
                                                  throws IllegalArgumentException

Throws:

IllegalArgumentException

assertNotEmpty

public static <T> T[] assertNotEmpty(T[] array,
                                     String fieldName)
                              throws IllegalArgumentException

Throws:

IllegalArgumentException

assertStringNotEmpty

public static String assertStringNotEmpty(String string,
                                          String fieldName)
                                   throws IllegalArgumentException

Throws:

IllegalArgumentException