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.domainobjects;
  
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  import org.apache.causeway.core.metamodel.object.ManagedObjects;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectMember;
  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;
  
  public class DomainObjectLinkTo implements ObjectAdapterLinkTo {
  
      protected IResourceContext resourceContext;
      protected ManagedObject objectAdapter;
  
      @Override
      public final DomainObjectLinkTo usingUrlBase(final IResourceContext resourceContext) {
          this.resourceContext = resourceContext;
          return this;
      }
  
      @Override
      public ObjectAdapterLinkTo with(final ManagedObject objectAdapter) {
          this.objectAdapter = objectAdapter;
          return this;
      }
  
      @Override
      public LinkBuilder builder() {
          return builder(null);
      }
  
      @Override
      public LinkBuilder builder(final Rel rel) {
          final LinkBuilder linkBuilder = LinkBuilder
                  .newBuilder(
                          resourceContext,
                          relElseDefault(rel).getName(),
                          RepresentationType.DOMAIN_OBJECT,
                          linkRef(new StringBuilder()).toString());
          linkBuilder.withTitle(objectAdapter.getTitle());
          return linkBuilder;
      }
  
      /**
       * hook method
       */
      protected StringBuilder linkRef(final StringBuilder buf) {
          final String objectRef = ManagedObjects.stringifyElseUnidentified(objectAdapter, "/");
          return buf.append("objects/").append(objectRef);
      }
  
      protected Rel relElseDefault(final Rel rel) {
          return rel != null ? rel : defaultRel();
      }
  
      /**
       * hook method; used by {@link #builder(Rel)}.
       */
      protected Rel defaultRel() {
          return Rel.VALUE;
      }
  
      @Override
      public final LinkBuilder memberBuilder(final Rel rel, final MemberType memberType, final ObjectMember objectMember, final String... parts) {
          return memberBuilder(rel, memberType, objectMember, memberType.getRepresentationType(), parts);
      }
  
      @Override
      public final LinkBuilder memberBuilder(final Rel rel, final MemberType memberType, final ObjectMember objectMember, final RepresentationType representationType, final String... parts) {
          final StringBuilder buf = linkRef(new StringBuilder());
          buf.append("/").append(memberType.getUrlPart()).append(objectMember.getId());
          for (final String part : parts) {
              if (part == null) {
                  continue;
              }
              buf.append("/").append(part);
          }
          final String url = buf.toString();
          return LinkBuilder.newBuilder(resourceContext, rel.andParam(memberType.getName(), objectMember.getId()), representationType, url);
      }
  
  }