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.object.domainobject.introspection;
  
  import java.util.Optional;
  
  import org.apache.causeway.applib.annotation.DomainObject;
  import org.apache.causeway.applib.annotation.Introspection;
  import org.apache.causeway.commons.internal.base._NullSafe;
  import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
  import org.apache.causeway.core.metamodel.facets.object.introspection.IntrospectionPolicyFacet;
  import org.apache.causeway.core.metamodel.facets.object.introspection.IntrospectionPolicyFacetAbstract;
  
  public class IntrospectionPolicyFacetForDomainObjectAnnotation
  extends IntrospectionPolicyFacetAbstract {
  
      /**
       * If {@link DomainObject} annotation not present
       * or {@link DomainObject#introspection()}
       * is unspecified or null returns an empty Optional.
       */
      public static Optional<IntrospectionPolicyFacet> create(
              final Optional<DomainObject> domainObjectIfAny,
              final Class<?> correspondingClass,
              final FacetHolder holder) {
  
          return domainObjectIfAny
                  .map(annot->annot.introspection())
                  .filter(_NullSafe::isPresent)
                  .filter(encapsulation->!encapsulation.isNotSpecified())
                  .map(encapsulation -> new IntrospectionPolicyFacetForDomainObjectAnnotation(
                          encapsulation,
                          holder));
      }
  
      private IntrospectionPolicyFacetForDomainObjectAnnotation(
              final Introspection encapsulation,
              final FacetHolder holder) {
          super(encapsulation, holder);
      }
  
  }
  