Bug 185931 Support to distinguish the week between Year-Week and Month-Week[1101]
Description: In our OLAP builder, the datetime dimension is divided into YEAR-QUARTER-MONTH-WEEK-DAY. When select all the levels, the WEEK should be the week(1 to 5) in one MONTH When select YEAR-WEEK levels, the WEEK should be the week(1 to 52) in one YEAR But now in our OLAP builder, the WEEK only belong to the MONTH, But not belong to the year, so if only select the YEAR-WEEK level, the result of crosstab is meaningless. The YEAR-DAY, MONTH-DAY and WEEK-DAY also have the same issues. we should define a rule to make sure the WEEK has a correct relationship of his parent
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignSession.java
}
	/**
	 * Opens a design given a stream to the design and the the file name of the
	 * design.
	 * 
	 * @param systemId
	 *            the uri where to find the relative sources for the library.
	 *            This url is treated as an absolute directory.
	 * @param is
	 *            the input stream to read the design
	 * @return the opened report design
	 * @throws DesignFileException
	 *             If the file is not found, or the file contains fatal errors.
	 */
	public ReportDesign openDesign( URL systemId, InputStream is )
			throws DesignFileException
	{
		return openDesign( systemId, is, null );
	}
	/**
	 * Opens a design given a stream to the design and the the file name of the
	 * design.
	 * 
	 * @param systemId
	 *            the uri where to find the relative sources for the library.
	 *            This url is treated as an absolute directory.
	 * @param is
	 *            the input stream to read the design
	 * @param options
	 * @return the opened report design