1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
package at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dao;
import at.ac.tuwien.sepm.assignment.groupphase.exception.ElementNotFoundException;
import at.ac.tuwien.sepm.assignment.groupphase.exception.PersistenceException;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Vehicle;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Vehicle.ConstructionType;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Vehicle.Status;
import at.ac.tuwien.sepm.assignment.groupphase.missioncontrol.dto.Vehicle.VehicleType;
import at.ac.tuwien.sepm.assignment.groupphase.util.JDBCConnectionManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashSet;
import java.util.Set;
import org.springframework.stereotype.Repository;
@Repository
public class VehicleDatabaseDAO implements VehicleDAO {
private final JDBCConnectionManager jdbcConnectionManager;
private RegistrationDatabaseDAO registrationDatabaseDao;
public VehicleDatabaseDAO(
JDBCConnectionManager j, RegistrationDatabaseDAO registrationDatabaseDao) {
jdbcConnectionManager = j;
this.registrationDatabaseDao = registrationDatabaseDao;
}
@Override
public long add(Vehicle v) throws PersistenceException {
String sql =
"INSERT INTO VehicleVersion (name,hasNef,constructionType,type) VALUES (?,?,?,?)";
String sql2 = "INSERT INTO Vehicle (version,status) VALUES (?,?)";
String sql3 = "UPDATE VehicleVersion SET name=? WHERE id=?";
try {
Connection con = jdbcConnectionManager.getConnection();
con.setAutoCommit(false);
String name = "";
long version, id;
try (PreparedStatement pstmt =
con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) {
pstmt.setString(1, name);
pstmt.setBoolean(2, v.hasNef());
pstmt.setInt(3, v.constructionType().ordinal());
pstmt.setString(4, v.type().name());
pstmt.executeUpdate();
try (ResultSet rs = pstmt.getGeneratedKeys()) {
if (!rs.next())
throw new PersistenceException("Failed to insert into VehicleVersion");
version = rs.getLong(1);
}
}
try (PreparedStatement pstmt =
con.prepareStatement(sql2, Statement.RETURN_GENERATED_KEYS)) {
pstmt.setLong(1, version);
pstmt.setInt(2, Status.ABGEMELDET.ordinal());
pstmt.executeUpdate();
try (ResultSet rs = pstmt.getGeneratedKeys()) {
if (!rs.next()) {
con.rollback();
throw new PersistenceException("Failed to insert into Vehicle");
}
id = rs.getLong(1);
}
name = v.type().name() + "-" + id;
}
try (PreparedStatement pstmt = con.prepareStatement(sql3)) {
pstmt.setString(1, name);
pstmt.setLong(2, version);
if (pstmt.executeUpdate() != 1) {
con.rollback();
throw new PersistenceException("Failed to update VehicleVersion");
}
}
con.commit();
return id;
} catch (SQLException e) {
jdbcConnectionManager.rollbackConnection();
throw new PersistenceException(e);
}
}
@Override
public void update(Vehicle v) throws ElementNotFoundException, PersistenceException {
String sql = "SELECT version FROM Vehicle WHERE id = ?";
String sql2 =
"MERGE INTO VehicleVersion(name, constructionType, type, hasNef)"
+ " KEY(name, constructionType, type, hasNef) VALUES(?, ?, ?, ?)";
String sql3 = "UPDATE Vehicle SET version = ?, status = ? WHERE id = ?";
long versionId;
try {
Connection con = jdbcConnectionManager.getConnection();
con.setAutoCommit(false);
try (PreparedStatement pstmt = con.prepareStatement(sql)) {
pstmt.setLong(1, v.id());
try (ResultSet rs = pstmt.executeQuery()) {
if (!rs.next()) throw new ElementNotFoundException("No such vehicleId exists");
versionId = rs.getLong(1);
}
}
try (PreparedStatement pstmt =
con.prepareStatement(sql2, Statement.RETURN_GENERATED_KEYS)) {
pstmt.setString(1, v.type().name() + "-" + v.id());
pstmt.setString(2, v.constructionType().name());
pstmt.setString(3, v.type().name());
pstmt.setBoolean(4, v.hasNef());
pstmt.executeUpdate();
try (ResultSet rs = pstmt.getGeneratedKeys()) {
if (rs.next()) {
// version changed, update it
versionId = rs.getLong(1);
}
}
}
try (PreparedStatement pstmt = con.prepareStatement(sql3)) {
pstmt.setLong(1, versionId);
pstmt.setString(2, v.status().name());
pstmt.setLong(3, v.id());
pstmt.executeUpdate();
}
con.commit();
} catch (SQLException e) {
jdbcConnectionManager.rollbackConnection();
throw new PersistenceException(e);
}
}
@Override
public Set<Vehicle> list() throws PersistenceException {
Set<Vehicle> result = new HashSet<>();
String sql =
"Select * from VehicleVersion, Vehicle where VehicleVersion.id=Vehicle.version";
try (PreparedStatement pstmt =
jdbcConnectionManager.getConnection().prepareStatement(sql)) {
pstmt.executeQuery();
try (ResultSet rs = pstmt.getResultSet()) {
while (rs.next()) {
result.add(vehicleFromRS(rs));
}
}
} catch (SQLException e) {
throw new PersistenceException(e);
}
return result;
}
@Override
public Vehicle get(long id) throws ElementNotFoundException, PersistenceException {
String sql =
"SELECT *"
+ " FROM Vehicle a"
+ " INNER JOIN VehicleVersion b"
+ " ON version = b.id"
+ " WHERE a.id = ?";
try {
Connection con = jdbcConnectionManager.getConnection();
try (PreparedStatement pstmt = con.prepareStatement(sql)) {
pstmt.setLong(1, id);
try (ResultSet rs = pstmt.executeQuery()) {
if (!rs.first()) throw new ElementNotFoundException("No such vehicle exists");
return vehicleFromRS(rs);
}
}
} catch (SQLException e) {
throw new PersistenceException(e);
}
}
@Override
public void remove(long id) throws ElementNotFoundException, PersistenceException {
throw new UnsupportedOperationException();
}
private Vehicle vehicleFromRS(ResultSet rs) throws SQLException, PersistenceException {
return Vehicle.builder()
.id(rs.getLong("Vehicle.id"))
.name(rs.getString("name"))
.constructionType(ConstructionType.values()[rs.getInt("constructionType")])
.type(VehicleType.valueOf(rs.getString("type")))
.status(Status.values()[rs.getInt("status")])
.hasNef(rs.getBoolean("hasNef"))
.registrations(registrationDatabaseDao.list(rs.getLong("Vehicle.version")))
.build();
}
}
|
