Coverage Report

Coverage Report - org.owasp.dependencycheck.data.nvdcve.ConnectionFactory

Classes in this File

Line Coverage

Branch Coverage

Complexity

ConnectionFactory

45%

66/146

32%

13/40

6.222

 /*
  * This file is part of dependency-check-core.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  * Copyright (c) 2014 Jeremy Long. All Rights Reserved.
  */
 package org.owasp.dependencycheck.data.nvdcve;
 
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.sql.CallableStatement;
 import java.sql.Connection;
 import java.sql.Driver;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import org.owasp.dependencycheck.utils.DBUtils;
 import org.owasp.dependencycheck.utils.Settings;
 
 /**
  * Loads the configured database driver and returns the database connection. If the embedded H2 database is used
  * obtaining a connection will ensure the database file exists and that the appropriate table structure has been
  * created.
  *
  * @author Jeremy Long <jeremy.long@owasp.org>
  */
 public final class ConnectionFactory {
     /**
      * The Logger.
      */
     private static final Logger LOGGER = Logger.getLogger(ConnectionFactory.class.getName());
     /**
      * The version of the current DB Schema.
      */
     public static final String DB_SCHEMA_VERSION = "2.9";
     /**
      * Resource location for SQL file used to create the database schema.
      */
     public static final String DB_STRUCTURE_RESOURCE = "data/initialize.sql";
     /**
      * The database driver used to connect to the database.
      */
     private static Driver driver = null;
     /**
      * The database connection string.
      */
     private static String connectionString = null;
     /**
      * The username to connect to the database.
      */
     private static String userName = null;
     /**
      * The password for the database.
      */
     private static String password = null;
 
     /**
      * Private constructor for this factory class; no instance is ever needed.
      */
     private ConnectionFactory() {
     }
 
     /**
      * Initializes the connection factory. Ensuring that the appropriate drivers are loaded and that a connection can be
      * made successfully.
      *
      * @throws DatabaseException thrown if we are unable to connect to the database
      */
     public static synchronized void initialize() throws DatabaseException {
         //this only needs to be called once.
         if (connectionString != null) {
             return;
         }
         Connection conn = null;
         try {
             //load the driver if necessary
             final String driverName = Settings.getString(Settings.KEYS.DB_DRIVER_NAME, "");
             if (!driverName.isEmpty()) { //likely need to load the correct driver
                 LOGGER.log(Level.FINE, "Loading driver: {0}", driverName);
                 final String driverPath = Settings.getString(Settings.KEYS.DB_DRIVER_PATH, "");
                 try {
                     if (!driverPath.isEmpty()) {
                         LOGGER.log(Level.FINE, "Loading driver from: {0}", driverPath);
                         driver = DriverLoader.load(driverName, driverPath);
                     } else {
                         driver = DriverLoader.load(driverName);
                     }
                 } catch (DriverLoadException ex) {
                     LOGGER.log(Level.FINE, "Unable to load database driver", ex);
                     throw new DatabaseException("Unable to load database driver");
                 }
             }
             userName = Settings.getString(Settings.KEYS.DB_USER, "dcuser");
             //yes, yes - hard-coded password - only if there isn't one in the properties file.
             password = Settings.getString(Settings.KEYS.DB_PASSWORD, "DC-Pass1337!");
             try {
                 connectionString = getConnectionString();
             } catch (IOException ex) {
                 LOGGER.log(Level.FINE,
                         "Unable to retrieve the database connection string", ex);
                 throw new DatabaseException("Unable to retrieve the database connection string");
             }
             boolean shouldCreateSchema = false;
             try {
                 if (connectionString.startsWith("jdbc:h2:file:")) { //H2
                     shouldCreateSchema = !dbSchemaExists();
                     LOGGER.log(Level.FINE, "Need to create DB Structure: {0}", shouldCreateSchema);
                 }
             } catch (IOException ioex) {
                 LOGGER.log(Level.FINE, "Unable to verify database exists", ioex);
                 throw new DatabaseException("Unable to verify database exists");
             }
             LOGGER.log(Level.FINE, "Loading database connection");
             LOGGER.log(Level.FINE, "Connection String: {0}", connectionString);
             LOGGER.log(Level.FINE, "Database User: {0}", userName);
 
             try {
                 conn = DriverManager.getConnection(connectionString, userName, password);
             } catch (SQLException ex) {
                 if (ex.getMessage().contains("java.net.UnknownHostException") && connectionString.contains("AUTO_SERVER=TRUE;")) {
                     connectionString = connectionString.replace("AUTO_SERVER=TRUE;", "");
                     try {
                         conn = DriverManager.getConnection(connectionString, userName, password);
                         Settings.setString(Settings.KEYS.DB_CONNECTION_STRING, connectionString);
                         LOGGER.log(Level.FINE,
                                 "Unable to start the database in server mode; reverting to single user mode");
                     } catch (SQLException sqlex) {
                         LOGGER.log(Level.FINE, "Unable to connect to the database", ex);
                         throw new DatabaseException("Unable to connect to the database");
                     }
                 } else {
                     LOGGER.log(Level.FINE, "Unable to connect to the database", ex);
                     throw new DatabaseException("Unable to connect to the database");
                 }
             }
 
             if (shouldCreateSchema) {
                 try {
                     createTables(conn);
                 } catch (DatabaseException dex) {
                     LOGGER.log(Level.FINE, null, dex);
                     throw new DatabaseException("Unable to create the database structure");
                 }
             } else {
                 try {
                     ensureSchemaVersion(conn);
                 } catch (DatabaseException dex) {
                     LOGGER.log(Level.FINE, null, dex);
                     throw new DatabaseException("Database schema does not match this version of dependency-check");
                 }
             }
         } finally {
             if (conn != null) {
                 try {
                     conn.close();
                 } catch (SQLException ex) {
                     LOGGER.log(Level.FINE, "An error occurred closing the connection", ex);
                 }
             }
         }
     }
 
     /**
      * Cleans up resources and unloads any registered database drivers. This needs to be called to ensure the driver is
      * unregistered prior to the finalize method being called as during shutdown the class loader used to load the
      * driver may be unloaded prior to the driver being de-registered.
      */
     public static synchronized void cleanup() {
         if (driver != null) {
             try {
                 DriverManager.deregisterDriver(driver);
             } catch (SQLException ex) {
                 LOGGER.log(Level.FINE, "An error occurred unloading the database driver", ex);
             } catch (Throwable unexpected) {
                 LOGGER.log(Level.FINE,
                         "An unexpected throwable occurred unloading the database driver", unexpected);
             }
             driver = null;
         }
         connectionString = null;
         userName = null;
         password = null;
     }
 
     /**
      * Constructs a new database connection object per the database configuration.
      *
      * @return a database connection object
      * @throws DatabaseException thrown if there is an exception loading the database connection
      */
     public static Connection getConnection() throws DatabaseException {
         initialize();
         Connection conn = null;
         try {
             conn = DriverManager.getConnection(connectionString, userName, password);
         } catch (SQLException ex) {
             LOGGER.log(Level.FINE, null, ex);
             throw new DatabaseException("Unable to connect to the database");
         }
         return conn;
     }
 
     /**
      * Returns the configured connection string. If using the embedded H2 database this function will also ensure the
      * data directory exists and if not create it.
      *
      * @return the connection string
      * @throws IOException thrown the data directory cannot be created
      */
     private static String getConnectionString() throws IOException {
         final String connStr = Settings.getString(Settings.KEYS.DB_CONNECTION_STRING, "jdbc:h2:file:%s;AUTO_SERVER=TRUE");
         if (connStr.contains("%s")) {
             final String directory = getDataDirectory().getCanonicalPath();
             final File dataFile = new File(directory, "cve." + DB_SCHEMA_VERSION);
             LOGGER.log(Level.FINE, String.format("File path for H2 file: '%s'", dataFile.toString()));
             return String.format(connStr, dataFile.getAbsolutePath());
         }
         return connStr;
     }
 
     /**
      * Retrieves the directory that the JAR file exists in so that we can ensure we always use a common data directory
      * for the embedded H2 database. This is public solely for some unit tests; otherwise this should be private.
      *
      * @return the data directory to store data files
      * @throws IOException is thrown if an IOException occurs of course...
      */
     public static File getDataDirectory() throws IOException {
         final File path = Settings.getDataFile(Settings.KEYS.DATA_DIRECTORY);
         if (!path.exists()) {
             if (!path.mkdirs()) {
                 throw new IOException("Unable to create NVD CVE Data directory");
             }
         }
         return path;
     }
 
     /**
      * Determines if the H2 database file exists. If it does not exist then the data structure will need to be created.
      *
      * @return true if the H2 database file does not exist; otherwise false
      * @throws IOException thrown if the data directory does not exist and cannot be created
      */
     private static boolean dbSchemaExists() throws IOException {
         final File dir = getDataDirectory();
         final String name = String.format("cve.%s.h2.db", DB_SCHEMA_VERSION);
         final File file = new File(dir, name);
         return file.exists();
     }
 
     /**
      * Creates the database structure (tables and indexes) to store the CVE data.
      *
      * @param conn the database connection
      * @throws DatabaseException thrown if there is a Database Exception
      */
     private static void createTables(Connection conn) throws DatabaseException {
         LOGGER.log(Level.FINE, "Creating database structure");
         InputStream is;
         InputStreamReader reader;
         BufferedReader in = null;
         try {
             is = ConnectionFactory.class.getClassLoader().getResourceAsStream(DB_STRUCTURE_RESOURCE);
             reader = new InputStreamReader(is, "UTF-8");
             in = new BufferedReader(reader);
             final StringBuilder sb = new StringBuilder(2110);
             String tmp;
             while ((tmp = in.readLine()) != null) {
                 sb.append(tmp);
             }
             Statement statement = null;
             try {
                 statement = conn.createStatement();
                 statement.execute(sb.toString());
             } catch (SQLException ex) {
                 LOGGER.log(Level.FINE, null, ex);
                 throw new DatabaseException("Unable to create database statement", ex);
             } finally {
                 DBUtils.closeStatement(statement);
             }
         } catch (IOException ex) {
             throw new DatabaseException("Unable to create database schema", ex);
         } finally {
             if (in != null) {
                 try {
                     in.close();
                 } catch (IOException ex) {
                     LOGGER.log(Level.FINEST, null, ex);
                 }
             }
         }
     }
 
     /**
      * Uses the provided connection to check the specified schema version within the database.
      *
      * @param conn the database connection object
      * @throws DatabaseException thrown if the schema version is not compatible with this version of dependency-check
      */
     private static void ensureSchemaVersion(Connection conn) throws DatabaseException {
         ResultSet rs = null;
         CallableStatement cs = null;
         try {
             cs = conn.prepareCall("SELECT value FROM properties WHERE id = 'version'");
             rs = cs.executeQuery();
             if (rs.next()) {
                 final boolean isWrongSchema = !DB_SCHEMA_VERSION.equals(rs.getString(1));
                 if (isWrongSchema) {
                     throw new DatabaseException("Incorrect database schema; unable to continue");
                 }
             } else {
                 throw new DatabaseException("Database schema is missing");
             }
         } catch (SQLException ex) {
             LOGGER.log(Level.FINE, null, ex);
             throw new DatabaseException("Unable to check the database schema version");
         } finally {
             DBUtils.closeResultSet(rs);
             DBUtils.closeStatement(cs);
         }
     }
 }

1		/*
2		* This file is part of dependency-check-core.
3		*
4		* Licensed under the Apache License, Version 2.0 (the "License");
5		* you may not use this file except in compliance with the License.
6		* You may obtain a copy of the License at
7		*
8		* http://www.apache.org/licenses/LICENSE-2.0
9		*
10		* Unless required by applicable law or agreed to in writing, software
11		* distributed under the License is distributed on an "AS IS" BASIS,
12		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13		* See the License for the specific language governing permissions and
14		* limitations under the License.
15		*
16		* Copyright (c) 2014 Jeremy Long. All Rights Reserved.
17		*/
18		package org.owasp.dependencycheck.data.nvdcve;
19
20		import java.io.BufferedReader;
21		import java.io.File;
22		import java.io.IOException;
23		import java.io.InputStream;
24		import java.io.InputStreamReader;
25		import java.sql.CallableStatement;
26		import java.sql.Connection;
27		import java.sql.Driver;
28		import java.sql.DriverManager;
29		import java.sql.ResultSet;
30		import java.sql.SQLException;
31		import java.sql.Statement;
32		import java.util.logging.Level;
33		import java.util.logging.Logger;
34		import org.owasp.dependencycheck.utils.DBUtils;
35		import org.owasp.dependencycheck.utils.Settings;
36
37		/**
38		* Loads the configured database driver and returns the database connection. If the embedded H2 database is used
39		* obtaining a connection will ensure the database file exists and that the appropriate table structure has been
40		* created.
41		*
42		* @author Jeremy Long <jeremy.long@owasp.org>
43		*/
44		public final class ConnectionFactory {
45		/**
46		* The Logger.
47		*/
48	1	private static final Logger LOGGER = Logger.getLogger(ConnectionFactory.class.getName());
49		/**
50		* The version of the current DB Schema.
51		*/
52		public static final String DB_SCHEMA_VERSION = "2.9";
53		/**
54		* Resource location for SQL file used to create the database schema.
55		*/
56		public static final String DB_STRUCTURE_RESOURCE = "data/initialize.sql";
57		/**
58		* The database driver used to connect to the database.
59		*/
60	1	private static Driver driver = null;
61		/**
62		* The database connection string.
63		*/
64	1	private static String connectionString = null;
65		/**
66		* The username to connect to the database.
67		*/
68	1	private static String userName = null;
69		/**
70		* The password for the database.
71		*/
72	1	private static String password = null;
73
74		/**
75		* Private constructor for this factory class; no instance is ever needed.
76		*/
77		private ConnectionFactory() {
78		}
79
80		/**
81		* Initializes the connection factory. Ensuring that the appropriate drivers are loaded and that a connection can be
82		* made successfully.
83		*
84		* @throws DatabaseException thrown if we are unable to connect to the database
85		*/
86		public static synchronized void initialize() throws DatabaseException {
87		//this only needs to be called once.
88	7	if (connectionString != null) {
89	6	return;
90		}
91	1	Connection conn = null;
92		try {
93		//load the driver if necessary
94	1	final String driverName = Settings.getString(Settings.KEYS.DB_DRIVER_NAME, "");
95	1	if (!driverName.isEmpty()) { //likely need to load the correct driver
96	1	LOGGER.log(Level.FINE, "Loading driver: {0}", driverName);
97	1	final String driverPath = Settings.getString(Settings.KEYS.DB_DRIVER_PATH, "");
98		try {
99	1	if (!driverPath.isEmpty()) {
100	0	LOGGER.log(Level.FINE, "Loading driver from: {0}", driverPath);
101	0	driver = DriverLoader.load(driverName, driverPath);
102		} else {
103	1	driver = DriverLoader.load(driverName);
104		}
105	0	} catch (DriverLoadException ex) {
106	0	LOGGER.log(Level.FINE, "Unable to load database driver", ex);
107	0	throw new DatabaseException("Unable to load database driver");
108	1	}
109		}
110	1	userName = Settings.getString(Settings.KEYS.DB_USER, "dcuser");
111		//yes, yes - hard-coded password - only if there isn't one in the properties file.
112	1	password = Settings.getString(Settings.KEYS.DB_PASSWORD, "DC-Pass1337!");
113		try {
114	1	connectionString = getConnectionString();
115	0	} catch (IOException ex) {
116	0	LOGGER.log(Level.FINE,
117		"Unable to retrieve the database connection string", ex);
118	0	throw new DatabaseException("Unable to retrieve the database connection string");
119	1	}
120	1	boolean shouldCreateSchema = false;
121		try {
122	1	if (connectionString.startsWith("jdbc:h2:file:")) { //H2
123	1	shouldCreateSchema = !dbSchemaExists();
124	1	LOGGER.log(Level.FINE, "Need to create DB Structure: {0}", shouldCreateSchema);
125		}
126	0	} catch (IOException ioex) {
127	0	LOGGER.log(Level.FINE, "Unable to verify database exists", ioex);
128	0	throw new DatabaseException("Unable to verify database exists");
129	1	}
130	1	LOGGER.log(Level.FINE, "Loading database connection");
131	1	LOGGER.log(Level.FINE, "Connection String: {0}", connectionString);
132	1	LOGGER.log(Level.FINE, "Database User: {0}", userName);
133
134		try {
135	1	conn = DriverManager.getConnection(connectionString, userName, password);
136	0	} catch (SQLException ex) {
137	0	if (ex.getMessage().contains("java.net.UnknownHostException") && connectionString.contains("AUTO_SERVER=TRUE;")) {
138	0	connectionString = connectionString.replace("AUTO_SERVER=TRUE;", "");
139		try {
140	0	conn = DriverManager.getConnection(connectionString, userName, password);
141	0	Settings.setString(Settings.KEYS.DB_CONNECTION_STRING, connectionString);
142	0	LOGGER.log(Level.FINE,
143		"Unable to start the database in server mode; reverting to single user mode");
144	0	} catch (SQLException sqlex) {
145	0	LOGGER.log(Level.FINE, "Unable to connect to the database", ex);
146	0	throw new DatabaseException("Unable to connect to the database");
147	0	}
148		} else {
149	0	LOGGER.log(Level.FINE, "Unable to connect to the database", ex);
150	0	throw new DatabaseException("Unable to connect to the database");
151		}
152	1	}
153
154	1	if (shouldCreateSchema) {
155		try {
156	0	createTables(conn);
157	0	} catch (DatabaseException dex) {
158	0	LOGGER.log(Level.FINE, null, dex);
159	0	throw new DatabaseException("Unable to create the database structure");
160	0	}
161		} else {
162		try {
163	1	ensureSchemaVersion(conn);
164	0	} catch (DatabaseException dex) {
165	0	LOGGER.log(Level.FINE, null, dex);
166	0	throw new DatabaseException("Database schema does not match this version of dependency-check");
167	1	}
168		}
169		} finally {
170	1	if (conn != null) {
171		try {
172	1	conn.close();
173	0	} catch (SQLException ex) {
174	0	LOGGER.log(Level.FINE, "An error occurred closing the connection", ex);
175	1	}
176		}
177		}
178	1	}
179
180		/**
181		* Cleans up resources and unloads any registered database drivers. This needs to be called to ensure the driver is
182		* unregistered prior to the finalize method being called as during shutdown the class loader used to load the
183		* driver may be unloaded prior to the driver being de-registered.
184		*/
185		public static synchronized void cleanup() {
186	0	if (driver != null) {
187		try {
188	0	DriverManager.deregisterDriver(driver);
189	0	} catch (SQLException ex) {
190	0	LOGGER.log(Level.FINE, "An error occurred unloading the database driver", ex);
191	0	} catch (Throwable unexpected) {
192	0	LOGGER.log(Level.FINE,
193		"An unexpected throwable occurred unloading the database driver", unexpected);
194	0	}
195	0	driver = null;
196		}
197	0	connectionString = null;
198	0	userName = null;
199	0	password = null;
200	0	}
201
202		/**
203		* Constructs a new database connection object per the database configuration.
204		*
205		* @return a database connection object
206		* @throws DatabaseException thrown if there is an exception loading the database connection
207		*/
208		public static Connection getConnection() throws DatabaseException {
209	6	initialize();
210	6	Connection conn = null;
211		try {
212	6	conn = DriverManager.getConnection(connectionString, userName, password);
213	0	} catch (SQLException ex) {
214	0	LOGGER.log(Level.FINE, null, ex);
215	0	throw new DatabaseException("Unable to connect to the database");
216	6	}
217	6	return conn;
218		}
219
220		/**
221		* Returns the configured connection string. If using the embedded H2 database this function will also ensure the
222		* data directory exists and if not create it.
223		*
224		* @return the connection string
225		* @throws IOException thrown the data directory cannot be created
226		*/
227		private static String getConnectionString() throws IOException {
228	1	final String connStr = Settings.getString(Settings.KEYS.DB_CONNECTION_STRING, "jdbc:h2:file:%s;AUTO_SERVER=TRUE");
229	1	if (connStr.contains("%s")) {
230	1	final String directory = getDataDirectory().getCanonicalPath();
231	1	final File dataFile = new File(directory, "cve." + DB_SCHEMA_VERSION);
232	1	LOGGER.log(Level.FINE, String.format("File path for H2 file: '%s'", dataFile.toString()));
233	1	return String.format(connStr, dataFile.getAbsolutePath());
234		}
235	0	return connStr;
236		}
237
238		/**
239		* Retrieves the directory that the JAR file exists in so that we can ensure we always use a common data directory
240		* for the embedded H2 database. This is public solely for some unit tests; otherwise this should be private.
241		*
242		* @return the data directory to store data files
243		* @throws IOException is thrown if an IOException occurs of course...
244		*/
245		public static File getDataDirectory() throws IOException {
246	2	final File path = Settings.getDataFile(Settings.KEYS.DATA_DIRECTORY);
247	2	if (!path.exists()) {
248	0	if (!path.mkdirs()) {
249	0	throw new IOException("Unable to create NVD CVE Data directory");
250		}
251		}
252	2	return path;
253		}
254
255		/**
256		* Determines if the H2 database file exists. If it does not exist then the data structure will need to be created.
257		*
258		* @return true if the H2 database file does not exist; otherwise false
259		* @throws IOException thrown if the data directory does not exist and cannot be created
260		*/
261		private static boolean dbSchemaExists() throws IOException {
262	1	final File dir = getDataDirectory();
263	1	final String name = String.format("cve.%s.h2.db", DB_SCHEMA_VERSION);
264	1	final File file = new File(dir, name);
265	1	return file.exists();
266		}
267
268		/**
269		* Creates the database structure (tables and indexes) to store the CVE data.
270		*
271		* @param conn the database connection
272		* @throws DatabaseException thrown if there is a Database Exception
273		*/
274		private static void createTables(Connection conn) throws DatabaseException {
275	0	LOGGER.log(Level.FINE, "Creating database structure");
276		InputStream is;
277		InputStreamReader reader;
278	0	BufferedReader in = null;
279		try {
280	0	is = ConnectionFactory.class.getClassLoader().getResourceAsStream(DB_STRUCTURE_RESOURCE);
281	0	reader = new InputStreamReader(is, "UTF-8");
282	0	in = new BufferedReader(reader);
283	0	final StringBuilder sb = new StringBuilder(2110);
284		String tmp;
285	0	while ((tmp = in.readLine()) != null) {
286	0	sb.append(tmp);
287		}
288	0	Statement statement = null;
289		try {
290	0	statement = conn.createStatement();
291	0	statement.execute(sb.toString());
292	0	} catch (SQLException ex) {
293	0	LOGGER.log(Level.FINE, null, ex);
294	0	throw new DatabaseException("Unable to create database statement", ex);
295		} finally {
296	0	DBUtils.closeStatement(statement);
297	0	}
298	0	} catch (IOException ex) {
299	0	throw new DatabaseException("Unable to create database schema", ex);
300		} finally {
301	0	if (in != null) {
302		try {
303	0	in.close();
304	0	} catch (IOException ex) {
305	0	LOGGER.log(Level.FINEST, null, ex);
306	0	}
307		}
308		}
309	0	}
310
311		/**
312		* Uses the provided connection to check the specified schema version within the database.
313		*
314		* @param conn the database connection object
315		* @throws DatabaseException thrown if the schema version is not compatible with this version of dependency-check
316		*/
317		private static void ensureSchemaVersion(Connection conn) throws DatabaseException {
318	1	ResultSet rs = null;
319	1	CallableStatement cs = null;
320		try {
321	1	cs = conn.prepareCall("SELECT value FROM properties WHERE id = 'version'");
322	1	rs = cs.executeQuery();
323	1	if (rs.next()) {
324	1	final boolean isWrongSchema = !DB_SCHEMA_VERSION.equals(rs.getString(1));
325	1	if (isWrongSchema) {
326	0	throw new DatabaseException("Incorrect database schema; unable to continue");
327		}
328	1	} else {
329	0	throw new DatabaseException("Database schema is missing");
330		}
331	0	} catch (SQLException ex) {
332	0	LOGGER.log(Level.FINE, null, ex);
333	0	throw new DatabaseException("Unable to check the database schema version");
334		} finally {
335	1	DBUtils.closeResultSet(rs);
336	1	DBUtils.closeStatement(cs);
337	1	}
338	1	}
339		}