In contrast to EmbeddedDriver, ClientDriver fails to report all
DriverPropertyInfo's
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Key: DERBY-546
URL: http://issues.apache.org/jira/browse/DERBY-546
Project: Derby
Type: Bug
Components: Network Client
Versions: 10.1.1.0
Environment: Windows XP professional, JRE 1.5.0_04
Reporter: Piet Blok
The Client Driver, in contrast to Embedded Driver, fails to report all
DriverPropertyInfo's. It seems that it not only ignores the Properties object
(see Jira DERBY_530), but it also ignores connection attributes appended to the
connection url.
See below a piece of code that demonstrates this behaviour:
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.DriverPropertyInfo;
import java.sql.SQLException;
import java.util.Enumeration;
import java.util.Properties;
import org.apache.derby.jdbc.ClientDriver;
import org.apache.derby.jdbc.EmbeddedDriver;
public class DerbyConnector {
private static final String DERBY_CONNECTION_PREFIX = "jdbc:derby:";
private static final String MY_DATABASE = "MyDatabase";
private static final String MY_HOST = "//127.0.0.1:1527/";
static {
new ClientDriver();
new EmbeddedDriver();
}
public static void main(String[] args) {
DerbyConnector connector = new DerbyConnector();
try {
Properties connectionProperties = new Properties();
connectionProperties.setProperty("create", "true");
connectionProperties.setProperty("dataEncryption", "true");
connector.printInfo(MY_HOST + MY_DATABASE, connectionProperties);
connector.printInfo(MY_DATABASE, connectionProperties);
} catch (SQLException e) {
e.printStackTrace();
}
}
public Connection connect(String url) throws SQLException {
return DriverManager.getConnection(DERBY_CONNECTION_PREFIX + url);
}
public Connection connect(String url, Properties connectionProperties)
throws SQLException {
return connect(DERBY_CONNECTION_PREFIX + url
+ connectionPropertiesString(connectionProperties));
}
public DriverPropertyInfo[] getPropertyInfos(String url, Properties props)
throws SQLException {
String connectionString = DERBY_CONNECTION_PREFIX + url
+ connectionPropertiesString(props);
System.out.println("ConnectionString = " + connectionString);
Driver driver = DriverManager.getDriver(connectionString);
return driver.getPropertyInfo(connectionString, props);
}
private String connectionPropertiesString(Properties connectionProperties) {
StringBuffer sb = new StringBuffer();
for (Enumeration enumeration = connectionProperties.propertyNames();
enumeration
.hasMoreElements();) {
String key = (String) enumeration.nextElement();
sb.append(';');
sb.append(key);
sb.append('=');
sb.append(connectionProperties.getProperty(key));
}
return sb.toString();
}
private void printInfo(String url, Properties connectionProperties)
throws SQLException {
System.out.println("========= " + url + " =========");
DriverPropertyInfo[] infos = getPropertyInfos(url,
connectionProperties);
for (int i = 0; i < infos.length; i++) {
System.out.println("DriverPropertyInfo " + i);
System.out.println(" description: " + infos[i].description);
System.out.println(" " + infos[i].name + " = " + infos[i].value);
System.out.println(" required = " + infos[i].required);
if (infos[i].choices != null) {
for (int j = 0; j < infos[i].choices.length; j++) {
System.out.println(" choice " + j + ": "
+ infos[i].choices[j]);
}
}
}
}
}
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