1.1 --- a/src/main/java/de/uapcore/lightpit/dao/RootEntityDao.java Fri Nov 06 10:50:32 2020 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,83 +0,0 @@
1.4 -/*
1.5 - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
1.6 - *
1.7 - * Copyright 2018 Mike Becker. All rights reserved.
1.8 - *
1.9 - * Redistribution and use in source and binary forms, with or without
1.10 - * modification, are permitted provided that the following conditions are met:
1.11 - *
1.12 - * 1. Redistributions of source code must retain the above copyright
1.13 - * notice, this list of conditions and the following disclaimer.
1.14 - *
1.15 - * 2. Redistributions in binary form must reproduce the above copyright
1.16 - * notice, this list of conditions and the following disclaimer in the
1.17 - * documentation and/or other materials provided with the distribution.
1.18 - *
1.19 - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
1.20 - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.21 - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.22 - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
1.23 - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.24 - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.25 - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.26 - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.27 - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.28 - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.29 - * POSSIBILITY OF SUCH DAMAGE.
1.30 - *
1.31 - */
1.32 -package de.uapcore.lightpit.dao;
1.33 -
1.34 -import java.sql.SQLException;
1.35 -import java.util.List;
1.36 -
1.37 -public interface RootEntityDao<T> {
1.38 -
1.39 - /**
1.40 - * Lists all entities.
1.41 - * @return a list of all entities
1.42 - * @throws SQLException on any kind of SQL errors
1.43 - */
1.44 - List<T> list() throws SQLException;
1.45 -
1.46 - /**
1.47 - * Finds an entity by its integer ID.
1.48 - * It is not guaranteed that referenced entities are automatically joined.
1.49 - *
1.50 - * @param id the id
1.51 - * @return the enity or null if there is no such entity
1.52 - * @throws SQLException on any kind of SQL errors
1.53 - */
1.54 - T find(int id) throws SQLException;
1.55 -
1.56 - /**
1.57 - * Inserts an instance into database.
1.58 - * It is not guaranteed that generated fields will be updated in the instance.
1.59 - *
1.60 - * @param instance the instance to insert
1.61 - * @throws SQLException on any kind of SQL errors
1.62 - */
1.63 - void save(T instance) throws SQLException;
1.64 -
1.65 - /**
1.66 - * Updates an instance in the database.
1.67 - *
1.68 - * @param instance the instance to insert
1.69 - * @return true if an instance has been updated, false if no instance with the specified ID was found
1.70 - * @throws SQLException on any kind of SQL errors
1.71 - */
1.72 - boolean update(T instance) throws SQLException;
1.73 -
1.74 - /**
1.75 - * Inserts or updates an instance in the database.
1.76 - * Tries an update first and if that fails, performs a save.
1.77 - *
1.78 - * @param instance the instance to insert or update
1.79 - * @throws SQLException on any kind of SQL errors
1.80 - * @see #update(Object)
1.81 - * @see #save(Object)
1.82 - */
1.83 - default void saveOrUpdate(T instance) throws SQLException {
1.84 - if (!update(instance)) save(instance);
1.85 - }
1.86 -}
