Sun, 17 May 2020 16:23:39 +0200
adds version management
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2018 Mike Becker. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29 package de.uapcore.lightpit.dao.postgres;
31 import de.uapcore.lightpit.dao.ProjectDao;
32 import de.uapcore.lightpit.entities.Project;
33 import de.uapcore.lightpit.entities.User;
35 import java.sql.Connection;
36 import java.sql.PreparedStatement;
37 import java.sql.ResultSet;
38 import java.sql.SQLException;
39 import java.util.ArrayList;
40 import java.util.List;
41 import java.util.Objects;
43 import static de.uapcore.lightpit.dao.Functions.setForeignKeyOrNull;
44 import static de.uapcore.lightpit.dao.Functions.setStringOrNull;
46 public final class PGProjectDao implements ProjectDao {
48 private final PreparedStatement insert, update, list, find;
50 public PGProjectDao(Connection connection) throws SQLException {
51 list = connection.prepareStatement(
52 "select id, name, description, repourl, " +
53 "userid, username, lastname, givenname, mail " +
54 "from lpit_project " +
55 "left join lpit_user owner on lpit_project.owner = owner.userid " +
56 "order by name");
58 find = connection.prepareStatement(
59 "select id, name, description, repourl, " +
60 "userid, username, lastname, givenname, mail " +
61 "from lpit_project " +
62 "left join lpit_user owner on lpit_project.owner = owner.userid " +
63 "where id = ?");
65 insert = connection.prepareStatement(
66 "insert into lpit_project (name, description, repourl, owner) values (?, ?, ?, ?)"
67 );
68 update = connection.prepareStatement(
69 "update lpit_project set name = ?, description = ?, repourl = ?, owner = ? where id = ?"
70 );
71 }
73 public Project mapColumns(ResultSet result) throws SQLException {
74 final var proj = new Project(result.getInt("id"));
75 proj.setName(result.getString("name"));
76 proj.setDescription(result.getString("description"));
77 proj.setRepoUrl(result.getString("repourl"));
79 final int id = result.getInt("userid");
80 if (id != 0) {
81 final var user = new User(id);
82 user.setUsername(result.getString("username"));
83 user.setGivenname(result.getString("givenname"));
84 user.setLastname(result.getString("lastname"));
85 user.setMail(result.getString("mail"));
86 proj.setOwner(user);
87 }
89 return proj;
90 }
92 @Override
93 public void save(Project instance) throws SQLException {
94 Objects.requireNonNull(instance.getName());
95 insert.setString(1, instance.getName());
96 setStringOrNull(insert, 2, instance.getDescription());
97 setStringOrNull(insert, 3, instance.getRepoUrl());
98 setForeignKeyOrNull(insert, 4, instance.getOwner(), User::getId);
99 insert.executeUpdate();
100 }
102 @Override
103 public boolean update(Project instance) throws SQLException {
104 Objects.requireNonNull(instance.getName());
105 update.setString(1, instance.getName());
106 setStringOrNull(update, 2, instance.getDescription());
107 setStringOrNull(update, 3, instance.getRepoUrl());
108 setForeignKeyOrNull(update, 4, instance.getOwner(), User::getId);
109 update.setInt(5, instance.getId());
110 return update.executeUpdate() > 0;
111 }
113 @Override
114 public List<Project> list() throws SQLException {
115 List<Project> projects = new ArrayList<>();
116 try (var result = list.executeQuery()) {
117 while (result.next()) {
118 projects.add(mapColumns(result));
119 }
120 }
121 return projects;
122 }
124 @Override
125 public Project find(int id) throws SQLException {
126 find.setInt(1, id);
127 try (var result = find.executeQuery()) {
128 if (result.next()) {
129 return mapColumns(result);
130 } else {
131 return null;
132 }
133 }
134 }
135 }