1 /*
2 * Copyright 2016-2026 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;
17
18 /**
19 * A simple SqlCriterion that does nothing and will not render. This is to solve the problem of
20 * awkward nullability operations in various classes. We can now say that an initial criterion is never null.
21 */
22 public class NullCriterion extends SqlCriterion {
23 @Override
24 public <R> R accept(SqlCriterionVisitor<R> visitor) {
25 return visitor.visit(this);
26 }
27 }