content: /*
   *  Copyright 1999-2021 Alibaba Group Holding Ltd.
   *
   *  Licensed under the Apache License, Version 2.0 (the "License");
   *  you may not use this file except in compliance with the License.
   *  You may obtain a copy of the License at
   *
   *       http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   */
  
  package com.alibaba.nacos.naming.selector.context;
  
  import com.alibaba.nacos.api.naming.pojo.Instance;
  import com.alibaba.nacos.api.selector.context.SelectorContextBuilder;
  
  import java.util.List;
  
  /**
   * The {@link NoneSelectorContextBuilder} will return the provider as context for the {@link com.alibaba.nacos.api.selector.Selector}
   * which doesn't need any other resource.
   *
   * @author chenglu
   * @date 2021-08-04 13:31
   */
  public class NoneSelectorContextBuilder<T extends Instance>  implements SelectorContextBuilder<List<T>, String, List<T>> {
      
      private static final String CONTEXT_TYPE = "NONE";
      
      @Override
      public List<T> build(String consumer, List<T> provider) {
          return provider;
      }
      
      @Override
      public String getContextType() {
          return CONTEXT_TYPE;
      }
  }
  