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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.apache.shardingsphere.infra.util.yaml;
19  
20  /**
21   * YAML configuration.
22   */
23  public interface YamlConfiguration {
24      
25      /**
26       * Check whether the YAML configuration is empty, indicating the absence of any valid configuration items.
27       * 
28       * @return check whether the YAML configuration is empty or not
29       */
30      default boolean isEmpty() {
31          // TODO Only global.yaml and database.yaml handle empty YAML file currently.Other scenarios reading YAML files should also consider overriding this method to check for empty files.
32          return false;
33      }
34  }