Thu, 19 Nov 2020 13:58:54 +0100
migrates DAO classes
/* * Copyright 2020 Mike Becker. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ package de.uapcore.lightpit.dao abstract class AbstractEntityDao<T> : AbstractDao<T>() { /** * Lists all entities. * @return a list of all entities */ abstract fun list(): List<T> /** * Finds an entity by its integer ID. * It is not guaranteed that referenced entities are automatically joined. * * @param id the id * @return the entity or null if there is no such entity */ abstract fun find(id: Int): T? /** * Inserts an instance into database. * It is not guaranteed that generated fields will be updated in the instance. * * @param instance the instance to insert */ abstract fun save(instance: T) /** * Updates an instance in the database. * * @param instance the instance to update * @return true if an instance has been updated, false if the instance is not present in database */ abstract fun update(instance: T): Boolean }