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From "Piet Blok (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-546) In contrast to EmbeddedDriver, ClientDriver fails to report all DriverPropertyInfo's
Date Tue, 30 Aug 2005 15:12:04 GMT
In contrast to EmbeddedDriver, ClientDriver fails to report all DriverPropertyInfo's
------------------------------------------------------------------------------------

         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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