Java tutorial
/* * 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 todoapp.dom.similarto; import java.util.List; import com.google.common.collect.Iterables; import com.google.common.collect.Lists; import org.apache.isis.applib.AbstractFactoryAndRepository; import org.apache.isis.applib.annotation.Action; import org.apache.isis.applib.annotation.ActionLayout; import org.apache.isis.applib.annotation.Contributed; import org.apache.isis.applib.annotation.DomainService; import org.apache.isis.applib.annotation.NatureOfService; import org.apache.isis.applib.annotation.SemanticsOf; import org.apache.isis.applib.services.queryresultscache.QueryResultsCache; import org.isisaddons.module.security.app.user.MeService; import org.isisaddons.module.security.dom.tenancy.ApplicationTenancy; import org.isisaddons.module.security.dom.user.ApplicationUser; import todoapp.dom.todoitem.ToDoItem; import todoapp.dom.todoitem.ToDoItemRepository; import todoapp.dom.todoitem.ToDoItems; @DomainService(nature = NatureOfService.VIEW_CONTRIBUTIONS_ONLY) public class SimilarToContributions extends AbstractFactoryAndRepository { //region > similarTo (contributed collection) @ActionLayout(contributed = Contributed.AS_ASSOCIATION) @Action(semantics = SemanticsOf.SAFE) public List<ToDoItem> similarTo(final ToDoItem toDoItem) { final List<ToDoItem> similarToDoItems = toDoItemRepository.findByAtPathAndCategory(currentUsersAtPath(), toDoItem.getCategory()); return Lists.newArrayList(Iterables.filter(similarToDoItems, $_ -> $_ != toDoItem)); } //endregion //region > helpers protected String currentUsersAtPath() { final ApplicationUser me = meService.me(); final ApplicationTenancy tenancy = me.getTenancy(); if (tenancy == null) { throw new IllegalStateException("No application tenancy defined"); } return tenancy.getPath(); } //endregion //region > injected services @javax.inject.Inject private ToDoItems toDoItems; @javax.inject.Inject private ToDoItemRepository toDoItemRepository; @javax.inject.Inject private MeService meService; @javax.inject.Inject private QueryResultsCache queryResultsCache; //endregion }