Thu, 14 May 2020 22:48:01 +0200
projects can now be added and updated
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.GenericDao;
32 import de.uapcore.lightpit.dao.ProjectDao;
33 import de.uapcore.lightpit.entities.Project;
34 import de.uapcore.lightpit.entities.User;
36 import java.sql.Connection;
37 import java.sql.PreparedStatement;
38 import java.sql.ResultSet;
39 import java.sql.SQLException;
40 import java.util.ArrayList;
41 import java.util.List;
42 import java.util.Objects;
44 import static de.uapcore.lightpit.dao.Functions.setForeignKeyOrNull;
45 import static de.uapcore.lightpit.dao.Functions.setStringOrNull;
47 public final class PGProjectDao implements ProjectDao, GenericDao<Project> {
49 private final PreparedStatement insert, update, list, find;
51 public PGProjectDao(Connection connection) throws SQLException {
52 list = connection.prepareStatement(
53 "select id, name, description, repourl, " +
54 "userid, username, lastname, givenname, mail " +
55 "from lpit_project " +
56 "left join lpit_user owner on lpit_project.owner = owner.userid " +
57 "order by name");
59 find = connection.prepareStatement(
60 "select id, name, description, repourl, " +
61 "userid, username, lastname, givenname, mail " +
62 "from lpit_project " +
63 "left join lpit_user owner on lpit_project.owner = owner.userid " +
64 "where id = ?");
66 insert = connection.prepareStatement(
67 "insert into lpit_project (name, description, repourl, owner) values (?, ?, ?, ?)"
68 );
69 update = connection.prepareStatement(
70 "update lpit_project set name = ?, description = ?, repourl = ?, owner = ? where id = ?"
71 );
72 }
74 public Project mapColumns(ResultSet result) throws SQLException {
75 final var proj = new Project(result.getInt("id"));
76 proj.setName(result.getString("name"));
77 proj.setDescription(result.getString("description"));
78 proj.setRepoUrl(result.getString("repourl"));
80 final int id = result.getInt("userid");
81 if (id != 0) {
82 final var user = new User(id);
83 user.setUsername(result.getString("username"));
84 user.setGivenname(result.getString("givenname"));
85 user.setLastname(result.getString("lastname"));
86 user.setMail(result.getString("mail"));
87 proj.setOwner(user);
88 }
90 return proj;
91 }
93 @Override
94 public void save(Project instance) throws SQLException {
95 Objects.requireNonNull(instance.getName());
96 insert.setString(1, instance.getName());
97 setStringOrNull(insert, 2, instance.getDescription());
98 setStringOrNull(insert, 3, instance.getRepoUrl());
99 setForeignKeyOrNull(insert, 4, instance.getOwner(), User::getUserID);
100 insert.executeUpdate();
101 }
103 @Override
104 public boolean update(Project instance) throws SQLException {
105 Objects.requireNonNull(instance.getName());
106 update.setString(1, instance.getName());
107 setStringOrNull(update, 2, instance.getDescription());
108 setStringOrNull(update, 3, instance.getRepoUrl());
109 setForeignKeyOrNull(update, 4, instance.getOwner(), User::getUserID);
110 update.setInt(5, instance.getId());
111 return update.executeUpdate() > 0;
112 }
114 @Override
115 public List<Project> list() throws SQLException {
116 List<Project> projects = new ArrayList<>();
117 try (var result = list.executeQuery()) {
118 while (result.next()) {
119 projects.add(mapColumns(result));
120 }
121 }
122 return projects;
123 }
125 @Override
126 public Project find(int id) throws SQLException {
127 find.setInt(1, id);
128 try (var result = find.executeQuery()) {
129 if (result.next()) {
130 return mapColumns(result);
131 } else {
132 return null;
133 }
134 }
135 }
136 }