| commit | author | age | ||
| a0ec7b | 1 | /* |
| U | 2 | * Radiozentrale - Webradio App |
| 3 | * Copyright (C) 2018 Ulrich Hilger, http://uhilger.de | |
| 4 | * | |
| 5 | * This program is free software: you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation, either version 3 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program. If not, see http://www.gnu.org/licenses/ | |
| 17 | */ | |
| 18 | ||
| 19 | package de.uhilger.radiozentrale.api; | |
| 20 | ||
| 21 | import de.uhilger.baselink.GenericRecord; | |
| 22 | import de.uhilger.baselink.PersistenceManager; | |
| 23 | import de.uhilger.radiozentrale.daten.Sender; | |
| 24 | import de.uhilger.radiozentrale.web.Initialiser; | |
| 25 | import java.sql.Connection; | |
| 26 | import java.util.List; | |
| 27 | ||
| 28 | /** | |
| 29 | * | |
| 30 | */ | |
| 31 | public class SenderApi extends Api { | |
| 32 | ||
| 33 | public static final String SQL_GET_SENDER = "getSender"; | |
| 34 | public static final String SQL_GET_NEXT_KEY = "getNextKey"; | |
| 35 | public static final String SQL_INCREMENT_KEY = "incrementKey"; | |
| 36 | ||
| 37 | public static final String KEY_SENDER_ID = "sender_id"; | |
| 38 | ||
| 39 | ||
| 40 | public Sender neuerSender(Sender sender) { | |
| 41 | Sender neuerSender = null; | |
| 42 | PersistenceManager db = getDb(); | |
| 43 | Connection c = db.getConnection(); | |
| b1aeea | 44 | db.startTransaction(c); |
| U | 45 | int nextKey = getNextId(db, KEY_SENDER_ID); |
| 46 | if(nextKey > -1) { | |
| a0ec7b | 47 | sender.setId(nextKey); |
| U | 48 | Object o = getDb().insert(sender, getMapper(Initialiser.MP_SENDER)); |
| 49 | if(o instanceof Sender) { | |
| 50 | neuerSender = (Sender) o; | |
| 8c352d | 51 | db.commit(c); |
| U | 52 | } else { |
| 53 | db.rollback(c); | |
| a0ec7b | 54 | } |
| U | 55 | } |
| 56 | return neuerSender; | |
| 57 | } | |
| 58 | ||
| 59 | public List senderliste() { | |
| 8c352d | 60 | return getDb().select(getSql(SQL_GET_SENDER), getMapper(Initialiser.MP_SENDER)); |
| a0ec7b | 61 | } |
| b1aeea | 62 | |
| U | 63 | private int getNextId(PersistenceManager db, String key) { |
| 64 | int nextKey = -1; | |
| 65 | List<List<String>> list = db.select(getSql(SQL_GET_NEXT_KEY), GenericRecord.WITHOUT_BLOBS, key); | |
| 66 | if(list != null && list.size() > 1) { | |
| 67 | nextKey = Integer.parseInt(list.get(1).get(0)); // erster Datensatz ist Ueberschrift | |
| 68 | if(nextKey > -1) { | |
| 69 | db.execute(getSql(SQL_INCREMENT_KEY), nextKey+1, key, nextKey); | |
| 70 | } | |
| 71 | } | |
| 72 | return nextKey; | |
| 73 | } | |
| a0ec7b | 74 | } |
