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1   /*
2    *    Copyright 2009-2022 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.apache.ibatis.scripting.xmltags;
17  
18  import java.util.List;
19  
20  /**
21   * @author Clinton Begin
22   */
23  public class ChooseSqlNode implements SqlNode {
24    private final SqlNode defaultSqlNode;
25    private final List<SqlNode> ifSqlNodes;
26  
27    public ChooseSqlNode(List<SqlNode> ifSqlNodes, SqlNode defaultSqlNode) {
28      this.ifSqlNodes = ifSqlNodes;
29      this.defaultSqlNode = defaultSqlNode;
30    }
31  
32    @Override
33    public boolean apply(DynamicContext context) {
34      for (SqlNode sqlNode : ifSqlNodes) {
35        if (sqlNode.apply(context)) {
36          return true;
37        }
38      }
39      if (defaultSqlNode != null) {
40        defaultSqlNode.apply(context);
41        return true;
42      }
43      return false;
44    }
45  }