content: /*
   * Copyright © 2018-2025 Commonwealth Scientific and Industrial Research
   * Organisation (CSIRO) ABN 41 687 119 230.
   *
   * 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 au.csiro.pathling.library.query;
  
  import au.csiro.pathling.views.FhirView;
  import jakarta.annotation.Nonnull;
  import org.apache.spark.sql.Dataset;
  import org.apache.spark.sql.Row;
  
  /**
   * A a single point for running queries. This exists to decouple the execution of queries from the
   * dispatch, allowing for easier testing and potentially extending the number of types of queries
   * that can be run in the future.
   *
   * @author Piotr Szul
   * @author John Grimes
   */
  public interface QueryDispatcher {
  
    /**
     * Dispatches the given view request to be executed and returns the result.
     *
     * @param view the request to execute
     * @return the result of the execution
     */
    @Nonnull
    Dataset<Row> dispatch(@Nonnull FhirView view);
   
  }
  