1 /*
2 * Licensed to The Apereo Foundation under one or more contributor license
3 * agreements. See the NOTICE file distributed with this work for additional
4 * information regarding copyright ownership.
5 *
6 *
7 * The Apereo Foundation licenses this file to you under the Educational
8 * Community License, Version 2.0 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of the License
10 * at:
11 *
12 * http://opensource.org/licenses/ecl2.txt
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
16 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
17 * License for the specific language governing permissions and limitations under
18 * the License.
19 *
20 */
21
22 package org.opencastproject.list.api;
23
24 import java.util.Collections;
25 import java.util.List;
26 import java.util.Optional;
27
28 /**
29 * ResourceListQuery that should result in an empty list after execution.
30 */
31 public class EmptyResourceListQuery implements ResourceListQuery {
32 @Override
33 public List<ResourceListFilter<?>> getFilters() {
34 return Collections.emptyList();
35 }
36
37 @Override
38 public List<ResourceListFilter<?>> getAvailableFilters() {
39 return Collections.emptyList();
40 }
41
42 @Override
43 public ResourceListFilter<?> getFilter(String name) {
44 return null;
45 }
46
47 @Override
48 public Optional<Integer> getLimit() {
49 return Optional.of(0);
50 }
51
52 @Override
53 public Optional<Integer> getOffset() {
54 return Optional.empty();
55 }
56
57 @Override
58 public Optional<String> getSortBy() {
59 return Optional.empty();
60 }
61
62 @Override
63 public Boolean hasFilter(String name) {
64 return false;
65 }
66 }