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.core.metamodel.facets.properties.property.mandatory;
  
  import org.apache.causeway.applib.annotation.Optionality;
  import org.apache.causeway.applib.annotation.Property;
  import org.apache.causeway.commons.internal.reflection._MethodFacades.MethodFacade;
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
  import org.apache.causeway.core.metamodel.facets.objectvalue.mandatory.MandatoryFacet;
  import org.apache.causeway.core.metamodel.facets.objectvalue.mandatory.MandatoryFacetAbstract;
  
  public abstract class MandatoryFacetForPropertyAnnotation
  extends MandatoryFacetAbstract {
  
      public static java.util.Optional<MandatoryFacet> create(
              final java.util.Optional<Property> propertyIfAny,
              final MethodFacade method,
              final FacetHolder holder) {
  
          if(!propertyIfAny.isPresent()) {
              return null;
          }
  
          var returnType = method.getReturnType();
          if (returnType.isPrimitive()) {
              return java.util.Optional.of(new MandatoryFacetForPropertyAnnotation.Primitive(holder));
          }
  
          return propertyIfAny
                  .map(Property::optionality)
                  .filter(optionality -> optionality != Optionality.NOT_SPECIFIED)
                  .map(optionality -> {
                      switch (optionality) {
                      case DEFAULT:
                          // do nothing here; instead will rely on MandatoryFromJdoColumnAnnotationFacetFactory to perform
                          // the remaining processing
                          return null;
                      case MANDATORY:
                          return new MandatoryFacetForPropertyAnnotation.Required(holder);
                      case OPTIONAL:
                          return new MandatoryFacetForPropertyAnnotation.Optional(holder);
                      default:
                      }
                      throw new IllegalStateException("optionality '" + optionality + "' not recognised");
                  });
      }
  
      public MandatoryFacetForPropertyAnnotation(final Semantics semantics, final FacetHolder holder) {
          super(semantics, holder);
      }
  
      protected MandatoryFacetForPropertyAnnotation(
              final Semantics semantics, final FacetHolder holder, final Facet.Precedence precedence) {
          super(semantics, holder, precedence);
      }
  
      @Override
      public final String summarize() {
          return MandatoryFacetForPropertyAnnotation.class.getSimpleName() + "." + super.summarize();
      }
  
      // -- IMPLEMENTATIONS
  
      public static class Primitive extends MandatoryFacetForPropertyAnnotation {
          public Primitive(final FacetHolder holder) {
              super(Semantics.REQUIRED, holder);
          }
      }
  
      public static class Required extends MandatoryFacetForPropertyAnnotation {
          public Required(final FacetHolder holder) {
              super(Semantics.REQUIRED, holder, Precedence.HIGH); // allow UI to be more strict than data/store
          }
      }
  
      public static class Optional extends MandatoryFacetForPropertyAnnotation {
          public Optional(final FacetHolder holder) {
              super(Semantics.OPTIONAL, holder);
          }
      }
  
  }
  