java/jdbc-loopback-driver/src/info/globalcode/jdbc/loopback/Driver.java
author František Kučera <franta-hg@frantovo.cz>
Tue, 26 Feb 2019 18:19:49 +0100
branchv_0
changeset 236 a3ec71fa8e17
parent 235 8ce612cca4d8
permissions -rw-r--r--
Avoid reusing/rewriting the DB connection properties.
There was weird random errors while testing connection to multiple DB in parallel when one of them was meta connection to same DB connection.
Two kinds of exception: 1) missing password 2) „Passing DB password as CLI parameter is insecure!“
     1 /**
     2  * SQL-DK
     3  * Copyright © 2014 František Kučera (frantovo.cz)
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, either version 3 of the License, or
     8  * (at your option) any later version.
     9  *
    10  * This program is distributed in the hope that it will be useful,
    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  * GNU General Public License for more details.
    14  *
    15  * You should have received a copy of the GNU General Public License
    16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 package info.globalcode.jdbc.loopback;
    19 
    20 import java.sql.DriverManager;
    21 import java.sql.DriverPropertyInfo;
    22 import java.sql.SQLException;
    23 import java.sql.SQLFeatureNotSupportedException;
    24 import java.util.Properties;
    25 import java.util.logging.Level;
    26 import java.util.logging.Logger;
    27 
    28 /**
    29  *
    30  * @author Ing. František Kučera (frantovo.cz)
    31  */
    32 public class Driver implements java.sql.Driver {
    33 
    34 	private static final Logger log = Logger.getLogger(Driver.class.getName());
    35 
    36 	static {
    37 		try {
    38 			DriverManager.registerDriver(new Driver());
    39 		} catch (SQLException e) {
    40 			log.log(Level.SEVERE, "Unable to register JDBC driver", e);
    41 		}
    42 	}
    43 
    44 	@Override
    45 	public Connection connect(String url, Properties info) throws SQLException {
    46 		if (acceptsURL(url)) {
    47 			return new Connection(url, info);
    48 		} else {
    49 			// The driver should return "null" if it realizes it is the wrong kind of driver to connect to the given URL.
    50 			return null;
    51 		}
    52 	}
    53 
    54 	@Override
    55 	public boolean acceptsURL(String url) throws SQLException {
    56 		return url != null && url.startsWith("jdbc:loopback://");
    57 	}
    58 
    59 	@Override
    60 	public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) throws SQLException {
    61 		return new DriverPropertyInfo[0];
    62 	}
    63 
    64 	@Override
    65 	public int getMajorVersion() {
    66 		return 0;
    67 	}
    68 
    69 	@Override
    70 	public int getMinorVersion() {
    71 		return 1;
    72 	}
    73 
    74 	@Override
    75 	public boolean jdbcCompliant() {
    76 		return false;
    77 	}
    78 
    79 	@Override
    80 	public Logger getParentLogger() throws SQLFeatureNotSupportedException {
    81 		throw new SQLFeatureNotSupportedException("Not supported yet.");
    82 	}
    83 
    84 }