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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  /**
19   * @author Clinton Begin
20   */
21  public class IfSqlNode implements SqlNode {
22    private final ExpressionEvaluator evaluator;
23    private final String test;
24    private final SqlNode contents;
25  
26    public IfSqlNode(SqlNode contents, String test) {
27      this.test = test;
28      this.contents = contents;
29      this.evaluator = new ExpressionEvaluator();
30    }
31  
32    @Override
33    public boolean apply(DynamicContext context) {
34      if (evaluator.evaluateBoolean(test, context.getBindings())) {
35        contents.apply(context);
36        return true;
37      }
38      return false;
39    }
40  
41  }