1 /*
2 * Copyright 2017-2020 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.springframework.data.domain;
17
18 /**
19 * {@link Pageable} implementation to represent the absence of pagination information.
20 *
21 * @author Oliver Gierke
22 */
23 enum Unpaged implements Pageable {
24
25 INSTANCE;
26
27 /*
28 * (non-Javadoc)
29 * @see org.springframework.data.domain.Pageable#isPaged()
30 */
31 @Override
32 public boolean isPaged() {
33 return false;
34 }
35
36 /*
37 * (non-Javadoc)
38 * @see org.springframework.data.domain.Pageable#previousOrFirst()
39 */
40 @Override
41 public Pageable previousOrFirst() {
42 return this;
43 }
44
45 /*
46 * (non-Javadoc)
47 * @see org.springframework.data.domain.Pageable#next()
48 */
49 @Override
50 public Pageable next() {
51 return this;
52 }
53
54 /*
55 * (non-Javadoc)
56 * @see org.springframework.data.domain.Pageable#hasPrevious()
57 */
58 @Override
59 public boolean hasPrevious() {
60 return false;
61 }
62
63 /*
64 * (non-Javadoc)
65 * @see org.springframework.data.domain.Pageable#getSort()
66 */
67 @Override
68 public Sort getSort() {
69 return Sort.unsorted();
70 }
71
72 /*
73 * (non-Javadoc)
74 * @see org.springframework.data.domain.Pageable#getPageSize()
75 */
76 @Override
77 public int getPageSize() {
78 throw new UnsupportedOperationException();
79 }
80
81 /*
82 * (non-Javadoc)
83 * @see org.springframework.data.domain.Pageable#getPageNumber()
84 */
85 @Override
86 public int getPageNumber() {
87 throw new UnsupportedOperationException();
88 }
89
90 /*
91 * (non-Javadoc)
92 * @see org.springframework.data.domain.Pageable#getOffset()
93 */
94 @Override
95 public long getOffset() {
96 throw new UnsupportedOperationException();
97 }
98
99 /*
100 * (non-Javadoc)
101 * @see org.springframework.data.domain.Pageable#first()
102 */
103 @Override
104 public Pageable first() {
105 return this;
106 }
107 }
108