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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2018 Mike Becker. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | */ |
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29 | package de.uapcore.lightpit.dao.postgres; |
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30 | |
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31 | import de.uapcore.lightpit.dao.UserDao; |
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32 | import de.uapcore.lightpit.entities.User; |
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33 | |
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34 | import java.sql.Connection; |
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35 | import java.sql.PreparedStatement; |
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36 | import java.sql.ResultSet; |
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37 | import java.sql.SQLException; |
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38 | import java.util.ArrayList; |
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39 | import java.util.List; |
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40 | import java.util.Objects; |
124 | 41 | import java.util.Optional; |
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42 | |
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43 | import static de.uapcore.lightpit.dao.Functions.setStringOrNull; |
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44 | |
59 | 45 | public final class PGUserDao implements UserDao { |
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46 | |
124 | 47 | private final PreparedStatement insert, update, list, find, findByUsername; |
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48 | |
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49 | public PGUserDao(Connection connection) throws SQLException { |
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50 | list = connection.prepareStatement( |
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51 | "select userid, username, lastname, givenname, mail " + |
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52 | "from lpit_user where userid >= 0 " + |
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53 | "order by username"); |
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54 | find = connection.prepareStatement( |
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55 | "select userid, username, lastname, givenname, mail " + |
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56 | "from lpit_user where userid = ? "); |
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57 | |
124 | 58 | findByUsername = connection.prepareStatement( |
59 | "select userid, username, lastname, givenname, mail " + | |
60 | "from lpit_user where lower(username) = lower(?) "); | |
61 | ||
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62 | insert = connection.prepareStatement("insert into lpit_user (username, lastname, givenname, mail) values (?, ?, ?, ?)"); |
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63 | update = connection.prepareStatement("update lpit_user set lastname = ?, givenname = ?, mail = ? where userid = ?"); |
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64 | } |
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65 | |
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66 | static User mapColumns(ResultSet result) throws SQLException { |
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67 | final int id = result.getInt("userid"); |
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68 | if (id == 0) return null; |
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69 | final var user = new User(id); |
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70 | user.setUsername(result.getString("username")); |
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71 | user.setGivenname(result.getString("givenname")); |
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72 | user.setLastname(result.getString("lastname")); |
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73 | user.setMail(result.getString("mail")); |
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74 | return user; |
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75 | } |
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76 | |
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77 | @Override |
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78 | public void save(User instance) throws SQLException { |
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79 | Objects.requireNonNull(instance.getUsername()); |
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80 | insert.setString(1, instance.getUsername()); |
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81 | setStringOrNull(insert, 2, instance.getLastname()); |
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82 | setStringOrNull(insert, 3, instance.getGivenname()); |
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83 | setStringOrNull(insert, 4, instance.getMail()); |
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84 | insert.executeUpdate(); |
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85 | } |
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86 | |
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87 | @Override |
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88 | public boolean update(User instance) throws SQLException { |
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89 | if (instance.getId() < 0) return false; |
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90 | setStringOrNull(update, 1, instance.getLastname()); |
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91 | setStringOrNull(update, 2, instance.getGivenname()); |
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92 | setStringOrNull(update, 3, instance.getMail()); |
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93 | update.setInt(4, instance.getId()); |
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94 | return update.executeUpdate() > 0; |
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95 | } |
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96 | |
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97 | @Override |
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98 | public List<User> list() throws SQLException { |
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99 | List<User> users = new ArrayList<>(); |
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100 | try (var result = list.executeQuery()) { |
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101 | while (result.next()) { |
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102 | users.add(mapColumns(result)); |
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103 | } |
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104 | } |
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105 | return users; |
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106 | } |
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107 | |
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108 | @Override |
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109 | public User find(int id) throws SQLException { |
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110 | find.setInt(1, id); |
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111 | try (var result = find.executeQuery()) { |
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112 | if (result.next()) { |
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113 | return mapColumns(result); |
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114 | } else { |
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115 | return null; |
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116 | } |
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117 | } |
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118 | } |
124 | 119 | |
120 | @Override | |
121 | public Optional<User> findByUsername(String username) throws SQLException { | |
122 | findByUsername.setString(1, username); | |
123 | try (var result = findByUsername.executeQuery()) { | |
124 | if (result.next()) { | |
125 | return Optional.of(mapColumns(result)); | |
126 | } else { | |
127 | return Optional.empty(); | |
128 | } | |
129 | } | |
130 | } | |
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131 | } |