Bug 177091 Can't access stored procedure defined in Oracle Package
1.setup an oracle connection 2.try to call a stored procedure defined in package
data/org.eclipse.birt.report.data.oda.jdbc/src/org/eclipse/birt/report/data/oda/jdbc/CallStatement.java
private final static String ERRMSG_SET_PARAMETER = "Error setting value for SQL parameter #";
	private static Logger logger = Logger.getLogger( CallStatement.class.getName( ) );
	
	private IParameterMetaData parameterDefn; 
	protected String procedureName;
	protected String[] resultSetNames;
	
	
	private static final String ORACLE_FLOAT_NAME = "FLOAT";
	private static final String ORACLE_CURSOR_NAME = "REF CURSOR";
	private static final int ORACLE_CURSOR_TYPE = -10;
	/**
	 * assertNull(Object o)
	 * 
	 * @param o
	 *            the object that need to be tested null or not. if null, throw
	 *            exception
	 */
	private void assertNotNull( Object o ) throws OdaException
	{
		if ( o == null )
		{
			throw new JDBCException( ResourceConstants.DRIVER_NO_STATEMENT,
					ResourceConstants.ERROR_NO_STATEMENT );
		}
	}
	/**
	 * 
	 * Constructor CallableStatement(java.sql.Connection connection) use JDBC's
	 * Connection to construct it.