/**
* Assert that a collection has elements; that is, it must not be <code>null</code> and must have
* at least one element.
*
* <pre class="code">
* Assert.notEmpty(collection, "Collection must have elements");
* </pre>
*
* @param collection the collection to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the collection is <code>null</code> or has no elements
*/
public static void notEmpty(Collection collection, String message) {
if (DataUtil.isNullOrEmpty(collection)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that a Map has entries; that is, it must not be <code>null</code> and must have at least
* one entry.
*
* <pre class="code">
* Assert.notEmpty(map, "Map must have entries");
* </pre>
*
* @param map the map to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the map is <code>null</code> or has no entries
*/
public static void notEmpty(Map map, String message) {
if (DataUtil.isNullOrEmpty(map)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that an array has elements; that is, it must not be <code>null</code> and must have at
* least one element.
*
* <pre class="code">
* Assert.notEmpty(array, "The array must have elements");
* </pre>
*
* @param array the array to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the object array is <code>null</code> or has no elements
*/
public static void notEmpty(Object[] array, String message) {
if (DataUtil.isNullOrEmpty(array)) {
throw new IllegalArgumentException(message);
}
}