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1   /*
2    *    Copyright 2016-2025 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.mybatis.dynamic.sql.where.condition;
17  
18  import java.util.NoSuchElementException;
19  import java.util.function.Function;
20  import java.util.function.Predicate;
21  
22  import org.mybatis.dynamic.sql.AbstractSingleValueCondition;
23  
24  public class IsLike<T> extends AbstractSingleValueCondition<T>
25          implements AbstractSingleValueCondition.Filterable<T>, AbstractSingleValueCondition.Mappable<T> {
26  
27      private static final IsLike<?> EMPTY = new IsLike<Object>(-1) {
28          @Override
29          public Object value() {
30              throw new NoSuchElementException("No value present"); //$NON-NLS-1$
31          }
32  
33          @Override
34          public boolean isEmpty() {
35              return true;
36          }
37      };
38  
39      public static <T> IsLike<T> empty() {
40          @SuppressWarnings("unchecked")
41          IsLike<T> t = (IsLike<T>) EMPTY;
42          return t;
43      }
44  
45      protected IsLike(T value) {
46          super(value);
47      }
48  
49      @Override
50      public String operator() {
51          return "like"; //$NON-NLS-1$
52      }
53  
54      public static <T> IsLike<T> of(T value) {
55          return new IsLike<>(value);
56      }
57  
58      @Override
59      public IsLike<T> filter(Predicate<? super T> predicate) {
60          return filterSupport(predicate, IsLike::empty, this);
61      }
62  
63      @Override
64      public <R> IsLike<R> map(Function<? super T, ? extends R> mapper) {
65          return mapSupport(mapper, IsLike::new, IsLike::empty);
66      }
67  }