Bug 124096 sampledb properties should not be modified by users
steps to reproduce: - create a new data source using the sample database - click on Finish, then go to edit it by double click on it again - change Database URL to "invalid" - change User Name to "invalid" - click on Test Connection expected behavior: - error message is thrown out. actual behavior: - got "connection successful".
data/org.eclipse.birt.report.data.oda.sampledb/src/org/eclipse/birt/report/data/oda/sampledb/SampleDBJDBCConnectionFactory.java
* @return user name for db connection
	 */
	public static String getDbUser()
	{
		return SAMPLE_DB_SCHEMA;
	}
	
	
	/**
	 * @return Local path of the plugin's home directory
	 */
	private static String getHomeDir() throws OdaException, IOException
	{
		String result = null;
		IBundle bundle = Platform.getBundle( Constants.PLUGIN_ID );
		URL pluginHomeUrl = bundle.getEntry( "/" );
		pluginHomeUrl = Platform.asLocalURL( pluginHomeUrl );
        try 
		{
            URI uri = new URI(pluginHomeUrl.toString());
            result = uri.getPath();            
        } 
        catch ( URISyntaxException e)
		{
	            result = pluginHomeUrl.getFile();
        }
        return result;
	}
}