Bug 136279 Structure and table datatypes should be hidden.
Description: Structure and table datatype should be hidden. Steps to reproduce: In table data binding, I saw structure and table two datatypes. They are not supported now, so they should be removed.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ReportDesignHandle.java
}
	}
	/**
	 * Sets the base directory to use when computing relative links from this
	 * report. Especially used for searching images, library and so.
	 * 
	 * @param base
	 *            the base directory to set
	 */
	public void setBase( String base )
	{
		try
		{
			setProperty( BASE_PROP, base );
		}
		catch ( SemanticException e )
		{
			assert false;
		}
	}
	/**
	 * Sets the script called just before closing the report document file in
	 * the Factory.
	 * 
	 * @param value
	 *            the script to set.
	 * @deprecated
	 */
	public void setBeforeCloseDoc( String value )
	{