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.jdo.metamodel.facets.object.query;
  
  import org.apache.causeway.applib.Identifier;
  import org.apache.causeway.applib.id.LogicalType;
  import org.apache.causeway.commons.functional.Try;
  import org.apache.causeway.commons.internal.base._Strings;
  import org.apache.causeway.commons.internal.context._Context;
  import org.apache.causeway.core.metamodel.context.MetaModelContext;
  import org.apache.causeway.core.metamodel.spec.ObjectSpecification;
  import org.apache.causeway.core.metamodel.specloader.validator.MetaModelValidatorAbstract;
  import org.apache.causeway.core.metamodel.specloader.validator.ValidationFailure;
  import org.apache.causeway.persistence.jdo.provider.metamodel.facets.object.query.JdoQueryFacet;
  
  abstract class MetaModelValidatorForJdoqlAbstract
  extends MetaModelValidatorAbstract {
  
      final String clause;
  
      protected MetaModelValidatorForJdoqlAbstract(
              final MetaModelContext mmc,
              final String clause) {
          super(mmc, SKIP_MANAGED_BEANS);
          this.clause = clause;
      }
  
      @Override
      public void validateObjectEnter(final ObjectSpecification objectSpec) {
  
          var jdoQueryFacet = objectSpec.getFacet(JdoQueryFacet.class);
          if(jdoQueryFacet == null) {
              return;
          }
          for (var namedQuery : jdoQueryFacet.getNamedQueries()) {
              if(namedQuery.getLanguage().equals("JDOQL")) {
                  final String query = namedQuery.getQuery();
                  final String fromClassName = deriveClause(query);
                  interpretJdoql(fromClassName, objectSpec, query);
              }
          }
      }
  
      private void interpretJdoql(
              final String typeNameFromClause,
              final ObjectSpecification objectSpec,
              final String query) {
  
          if (_Strings.isNullOrEmpty(typeNameFromClause)) {
              return;
          }
  
          var cls = objectSpec.getCorrespondingClass();
  
          var fromSpecResult = Try.call(()->getSpecificationLoader()
                  .specForType(_Context.loadClass(typeNameFromClause))
                  .orElse(null));
  
          if(!fromSpecResult.getValue().isPresent()) {
              ValidationFailure.raise(
                      objectSpec.getSpecificationLoader(),
                      Identifier.classIdentifier(LogicalType.fqcn(cls)),
                      String.format(
                              "%s: error in JDOQL query, class name for '%s' clause not recognized (JDOQL : %s)",
                              cls.getName(),
                              clause,
                              query)
                      );
              return;
          }
  
          postInterpretJdoql(typeNameFromClause, objectSpec, query);
      }
  
      abstract String deriveClause(final String query);
  
      abstract void postInterpretJdoql(
              final String classNameFromClause,
              final ObjectSpecification objectSpec,
              final String query);
  
  }
  