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.viewer.restfulobjects.rendering.domaintypes;
  
  import org.apache.causeway.core.metamodel.spec.ObjectSpecification;
  import org.apache.causeway.core.metamodel.spec.feature.OneToManyAssociation;
  import org.apache.causeway.viewer.restfulobjects.applib.JsonRepresentation;
  import org.apache.causeway.viewer.restfulobjects.applib.Rel;
  import org.apache.causeway.viewer.restfulobjects.applib.RepresentationType;
  import org.apache.causeway.viewer.restfulobjects.rendering.IResourceContext;
  import org.apache.causeway.viewer.restfulobjects.rendering.LinkBuilder;
  import org.apache.causeway.viewer.restfulobjects.rendering.LinkFollowSpecs;
  
  public class CollectionDescriptionReprRenderer
  extends AbstractTypeMemberReprRenderer<OneToManyAssociation> {
  
      public static LinkBuilder newLinkToBuilder(
              final IResourceContext resourceContext,
              final Rel rel,
              final ObjectSpecification objectSpecification,
              final OneToManyAssociation collection) {
          final String domainType = objectSpecification.logicalTypeName();
          final String collectionId = collection.getId();
          final String url = "domain-types/" + domainType + "/collections/" + collectionId;
          return LinkBuilder.newBuilder(resourceContext, rel.getName(), RepresentationType.COLLECTION_DESCRIPTION, url);
      }
  
      public CollectionDescriptionReprRenderer(
              final IResourceContext resourceContext,
              final LinkFollowSpecs linkFollower,
              final JsonRepresentation representation) {
          super(resourceContext, linkFollower, RepresentationType.COLLECTION_DESCRIPTION, representation);
      }
  
      @Override
      protected void addLinksSpecificToFeature() {
          addLinkToElementTypeIfAny();
      }
  
      @Override
      protected void putExtensionsSpecificToFeature() {
          putExtensionsName();
          putExtensionsDescriptionIfAvailable();
      }
  
      // -- HELPER
  
      private void addLinkToElementTypeIfAny() {
          var elementTypeSpec = getObjectFeature().getElementType();
          if (elementTypeSpec == null) {
              return;
          }
          getLinks().arrayAdd(
                  DomainTypeReprRenderer
                  .newLinkToBuilder(getResourceContext(), Rel.ELEMENT_TYPE, elementTypeSpec)
                  .build());
      }
  
  }
  