private static <D extends Comparable<? super D>, E> Predicate buildRangePredicate(
Range<E, D> range, Root<E> root, CriteriaBuilder builder) {
if (range.isBetween()) {
return builder.between(root.get(range.getField()), range.getFrom(), range.getTo());
} else if (range.isFromSet()) {
return builder.greaterThanOrEqualTo(root.get(range.getField()), range.getFrom());
} else if (range.isToSet()) {
return builder.lessThanOrEqualTo(root.get(range.getField()), range.getTo());
}
return null;
}
@Test
public void testUntil() {
Range<Character> range = new Range<>('a').until('z');
assertThat(range.getTo(), is('z'));
assertThat(range.isToIncluded(), is(false));
Helpers.assertThrows(NullPointerException.class, () -> new Range<>("").until(null));
}
@Test
public void testConstruct() {
Range<Integer> range = new Range<>(1);
assertThat(range.getFrom(), is(1));
range = new Range<>(2, 10, i -> i + 2);
assertThat(range.getFrom(), is(2));
assertThat(range.getTo(), is(10));
assertThat(range.isToIncluded(), is(true));
}