com.amazonaws.util

Class ValidationUtils

java.lang.Object

com.amazonaws.util.ValidationUtils

public class ValidationUtils
extends java.lang.Object

ValidationUtils class.

Constructor Summary

Constructors

Constructor and Description
ValidationUtils()

Method Summary

Modifier and Type	Method and Description
static void	assertAllAreNull(java.lang.String messageIfNull, java.lang.Object... objects) Asserts that all of the objects are null.
static int	assertIsPositive(int num, java.lang.String fieldName) Asserts that the given number is positive (non-negative and non-zero).
static <T> T[]	assertNotEmpty(T[] array, java.lang.String fieldName) Asserts that it is not empty.
static <T extends java.util.Collection<?>> T	assertNotEmpty(T collection, java.lang.String fieldName) Asserts that it is not empty.
static <T> T	assertNotNull(T object, java.lang.String fieldName) Asserts that the given object is non-null and returns it.
static void	assertParameterNotNull(java.lang.Object parameterValue, java.lang.String errorMessage) Asserts that the specified parameter value is not null and if it is, throws an IllegalArgumentException with the specified error message.
static java.lang.String	assertStringNotEmpty(java.lang.String string, java.lang.String fieldName) Asserts that the string is not empty.

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,
                                  java.lang.String fieldName)

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

Type Parameters:

T - the type of object.

Parameters:

object - Object to assert on

fieldName - Field name to display in exception message if null

Returns:

Object if non null

assertParameterNotNull

public static void assertParameterNotNull(java.lang.Object parameterValue,
                                          java.lang.String errorMessage)

Asserts that the specified parameter value is not null and if it is, throws an IllegalArgumentException with the specified error message.

Parameters:

parameterValue - The parameter value being checked.

errorMessage - The error message to include in the IllegalArgumentException if the specified parameter is null.

assertAllAreNull

public static void assertAllAreNull(java.lang.String messageIfNull,
                                    java.lang.Object... objects)

Asserts that all of the objects are null.

Parameters:

messageIfNull - message.

objects - objects.

Throws:

java.lang.IllegalArgumentException - if any object provided was NOT null.

assertIsPositive

public static int assertIsPositive(int num,
                                   java.lang.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 java.util.Collection<?>> T assertNotEmpty(T collection,
                                                                   java.lang.String fieldName)

Asserts that it is not empty.

Type Parameters:

T - the collection type.

Parameters:

collection - collection.

fieldName - field name.

Returns:

collection.

assertNotEmpty

public static <T> T[] assertNotEmpty(T[] array,
                                     java.lang.String fieldName)

Asserts that it is not empty.

Type Parameters:

T - array type.

Parameters:

array - array.

fieldName - field name.

Returns:

array.

assertStringNotEmpty

public static java.lang.String assertStringNotEmpty(java.lang.String string,
                                                    java.lang.String fieldName)

Asserts that the string is not empty.

Parameters:

string - the string.

fieldName - the field name.

Returns:

the string.