content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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 org.apache.causeway.persistence.querydsl.integration.services;
  
  import lombok.NoArgsConstructor;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.function.Function;
  
  import jakarta.inject.Inject;
  
  import org.apache.causeway.core.metamodel.facets.object.autocomplete.AutoCompleteFacet;
  import org.apache.causeway.core.metamodel.specloader.SpecificationLoader;
  
  import org.apache.causeway.persistence.querydsl.applib.services.auto.AutoCompleteGeneratedQueryService;
  
  import org.apache.causeway.persistence.querydsl.metamodel.facets.AutoCompleteUsingQueryDslFacet;
  
  import org.springframework.stereotype.Service;
  
  import com.querydsl.core.types.Predicate;
  import com.querydsl.core.types.dsl.PathBuilder;
  
  @Service
  @NoArgsConstructor
  public class AutoCompleteGeneratedQueryServiceImpl implements AutoCompleteGeneratedQueryService {
  
      @Inject protected SpecificationLoader specificationLoader;
  
      /**
       * Convenience method for programmatically delegate to the generated facet query
       * @param cls for which the auto generated query should be called
       * @param searchPhrase wildcard will ALWAYS be added when absent
       * @param <T>
       */
      public <T> List<T> autoComplete(Class<T> cls, String searchPhrase){
          // Call generated autoComplete
          AutoCompleteUsingQueryDslFacet facet = getFacet(cls);
          if(facet!=null){
              return facet.autoComplete(searchPhrase);
          }
          return newList();
      }
  
      /**
       * Convenience method for programmatically delegate to the generated facet query
       * @param cls for which the auto generated query should be called
       * @param searchPhrase wildcard will ALWAYS be added when absent
       * @param additionalExpression
       * @param <T>
       */
      public <T> List<T> autoComplete(Class<T> cls, String searchPhrase, Function<PathBuilder<T>, Predicate> additionalExpression){
          // Call generated autoComplete
          AutoCompleteUsingQueryDslFacet facet = getFacet(cls);
          if(facet!=null){
              return facet.autoComplete(searchPhrase, additionalExpression);
          }
          return newList();
      }
  
      /**
       * Convenience method for programmatically delegate to the generated facet query
       * @param cls for which the auto generated query should be called
       * @param searchPhrase wildcard will NEVER be added when absent
       * @param <T>
       */
      public <T> List<T> executeQuery(Class<T> cls, String searchPhrase){
          // Call generated autoComplete
          AutoCompleteUsingQueryDslFacet facet = getFacet(cls);
          if(facet!=null){
              return facet.executeQuery(searchPhrase);
          }
          return newList();
      }
  
      /**
       * Convenience method for programmatically delegate to the generated facet query
       * @param cls for which the auto generated query should be called
       * @param searchPhrase wildcard will NEVER be added when absent
       * @param additionalExpression
       * @param <T>
       */
      public <T> List<T> executeQuery(Class<T> cls, String searchPhrase, Function<PathBuilder<T>, Predicate> additionalExpression){
          // Call generated autoComplete
          AutoCompleteUsingQueryDslFacet facet = getFacet(cls);
          if(facet!=null){
              return facet.executeQuery(searchPhrase, additionalExpression);
          }
          return newList();
      }
  
      private <T> AutoCompleteUsingQueryDslFacet getFacet(Class<T> cls) {
          AutoCompleteFacet facet = specificationLoader.loadSpecification(cls)
                  .getFacet(AutoCompleteFacet.class);
          if(facet instanceof AutoCompleteUsingQueryDslFacet){
              return (AutoCompleteUsingQueryDslFacet)facet;
          }
          return null;
      }
  
      private static <T> List<T> newList(T... objs) {
          return newArrayList(objs);
      }
  
      static <T> ArrayList<T> newArrayList(T... objs) {
          ArrayList<T> result = new ArrayList();
          Collections.addAll(result, objs);
          return result;
      }
  
  }
  