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.impl;
23
24 import org.opencastproject.list.api.ResourceListFilter;
25 import org.opencastproject.list.api.ResourceListQuery;
26
27 import java.util.Collections;
28 import java.util.List;
29 import java.util.Optional;
30
31 /**
32 * ResourceListQuery that should result in an empty list after execution.
33 */
34 public class EmptyResourceListQuery implements ResourceListQuery {
35 @Override
36 public List<ResourceListFilter<?>> getFilters() {
37 return Collections.emptyList();
38 }
39
40 @Override
41 public List<ResourceListFilter<?>> getAvailableFilters() {
42 return Collections.emptyList();
43 }
44
45 @Override
46 public ResourceListFilter<?> getFilter(String name) {
47 return null;
48 }
49
50 @Override
51 public Optional<Integer> getLimit() {
52 return Optional.of(0);
53 }
54
55 @Override
56 public Optional<Integer> getOffset() {
57 return Optional.empty();
58 }
59
60 @Override
61 public Optional<String> getSortBy() {
62 return Optional.empty();
63 }
64
65 @Override
66 public Boolean hasFilter(String name) {
67 return false;
68 }
69 }