public class ValidationUtils
extends Object 

• Constructor Summary

  Constructors

  Constructor and Description
  ValidationUtils ()

• Method Summary

  All Methods

  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

    equals, 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