comparison: src/main/kotlin/de/uapcore/lightpit/dao/AbstractChildEntityDao.kt
src/main/kotlin/de/uapcore/lightpit/dao/AbstractChildEntityDao.kt
- changeset 159
- 86b5d8a1662f
equal
deleted
inserted
replaced
| 158:4f912cd42876 | 159:86b5d8a1662f |
|---|---|
| 1 /* | |
| 2 * Copyright 2020 Mike Becker. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are met: | |
| 6 * | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 17 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | |
| 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 20 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 21 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 22 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 * | |
| 25 */ | |
| 26 | |
| 27 package de.uapcore.lightpit.dao | |
| 28 | |
| 29 | |
| 30 abstract class AbstractChildEntityDao<T, P> : AbstractDao<T>() { | |
| 31 | |
| 32 /** | |
| 33 * Lists all entities being a child of the specified parent. | |
| 34 * @param parent the parent | |
| 35 * @return the list of child instances | |
| 36 */ | |
| 37 abstract fun list(parent: P): List<T> | |
| 38 | |
| 39 /** | |
| 40 * Finds an entity by its integer ID. | |
| 41 * It is not guaranteed that referenced entities are automatically joined. | |
| 42 * | |
| 43 * @param id the id | |
| 44 * @return the entity or null if there is no such entity | |
| 45 */ | |
| 46 abstract fun find(id: Int): T? | |
| 47 | |
| 48 /** | |
| 49 * Inserts an instance into database. | |
| 50 * It is not guaranteed that generated fields will be updated in the instance. | |
| 51 * | |
| 52 * @param instance the instance to insert | |
| 53 * @param parent a reference to the parent | |
| 54 */ | |
| 55 abstract fun save(instance: T, parent: P) | |
| 56 | |
| 57 /** | |
| 58 * Updates an instance in the database. | |
| 59 * | |
| 60 * @param instance the instance to update | |
| 61 * @return true if an instance has been updated, false if the instance is not present in database | |
| 62 */ | |
| 63 abstract fun update(instance: T): Boolean | |
| 64 } |
