content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * 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 io.activej.cube.attributes;
  
  import io.activej.common.annotation.ComponentInterface;
  import io.activej.promise.Promise;
  
  import java.util.List;
  import java.util.Map;
  
  @ComponentInterface
  public interface IAttributeResolver {
  	Class<?>[] getKeyTypes();
  
  	Map<String, Class<?>> getAttributeTypes();
  
  	Promise<Void> resolveAttributes(List<Object> results, KeyFunction keyFunction, AttributesFunction attributesFunction);
  
  	@FunctionalInterface
  	interface KeyFunction {
  		Object[] extractKey(Object result);
  	}
  
  	@FunctionalInterface
  	interface AttributesFunction {
  		void applyAttributes(Object result, Object[] attributes);
  	}
  }
  