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
logger.logp( java.util.logging.Level.FINE,
						CallStatement.class.getName( ),
						"prepare",
						"Query text can not be null." );
				throw new OdaException( "Query text can not be null." );
			}
			/*
			 * call the JDBC Connection.prepareCall(String) method to get the
			 * callableStatement
			 */
			procedureName = getProcedureName( command );
			this.callStat = conn.prepareCall( command );
			paramUtil = new SPParameterPositionUtil( command, '@' );
		}
		catch ( SQLException e )
		{
			throw new JDBCException( ResourceConstants.STATEMENT_CANNOT_PREPARE,
					e );
		}
	}
	
	/*
	 * @see org.eclipse.datatools.connectivity.oda.IQuery#setAppContext(java.lang.Object)
	 */
	public void setAppContext( Object context ) throws OdaException
	{
		if ( context instanceof Map )
		{
			parameterDefn = (IParameterMetaData) ( ( (Map) context ).get( "org.eclipse.birt.report.data.oda.jdbc.ParameterHints" ) );
		}