LightPIT: src/main/java/de/uapcore/lightpit/dao/GenericDao.java@57cfb94ab99f (annotated)

src/main/java/de/uapcore/lightpit/dao/GenericDao.java@57cfb94ab99f (annotated)

src/main/java/de/uapcore/lightpit/dao/GenericDao.java

Thu, 14 May 2020 22:48:01 +0200

author: Mike Becker <universe@uap-core.de>
date: Thu, 14 May 2020 22:48:01 +0200
changeset 47: 57cfb94ab99f
parent 38: cf85ef18f231
child 62: 833e0385572a
permissions: -rw-r--r--

projects can now be added and updated

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2018 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;
 import java.sql.SQLException;
 import java.util.List;
 public interface GenericDao<T> {
     /**
      * Returns a list of all entities.
      *
      * @return a list of all objects
      * @throws SQLException on any kind of SQL errors
      */
     List<T> list() throws SQLException;
     /**
      * Finds an entity by its integer ID.
      *
      * @param id the id
      * @return the enity or null if there is no such entity
      * @throws SQLException on any kind of SQL errors
      */
     T find(int id) throws SQLException;
     /**
      * Inserts an instance into database.
      *
      * @param instance the instance to insert
      * @throws SQLException on any kind of SQL errors
      */
     void save(T instance) throws SQLException;
     /**
      * Updates an instance in the database.
      *
      * @param instance the instance to insert
      * @return true if an instance has been updated, false if no instance with the specified ID was found
      * @throws SQLException on any kind of SQL errors
      */
     boolean update(T instance) throws SQLException;
     /**
      * Inserts or updates an instance in the database.
      * Tries an update first and if that fails, performs a save.
      *
      * @param instance the instance to insert or update
      * @throws SQLException on any kind of SQL errors
      * @see #update(Object)
      * @see #save(Object)
      */
     default void saveOrUpdate(T instance) throws SQLException {
         if (!update(instance)) save(instance);
     }
 }

Mercurial > hg > LightPIT / annotate

src/main/java/de/uapcore/lightpit/dao/GenericDao.java@57cfb94ab99f (annotated)

src/main/java/de/uapcore/lightpit/dao/GenericDao.java