Bug 193875 we can not get an entir url by IHTMLActionHandler
we can not get an entir url by IHTMLActionHandler, so word emitter dose not write the right url. now hyperlink drill through in word emitter doesn't work.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
/**
	 * Get result set name.
	 * 
	 * @param request
	 * @return
	 */
	public static String getResultSetName( HttpServletRequest request )
	{
		return getReportParameter( request, PARAM_RESULTSETNAME, null );
	}
	/**
	 * Get solected column name list.
	 * 
	 * @param request
	 * @return
	 */
	public static Collection getSelectedColumns( HttpServletRequest request )
	{
		ArrayList columns = new ArrayList( );
		int columnCount = getParameterAsInt( request,
				PARAM_SELECTEDCOLUMNNUMBER );
		for ( int i = 0; i < columnCount; i++ )
		{
			String paramName = PARAM_SELECTEDCOLUMN + String.valueOf( i );
			String columnName = getParameter( request, paramName );
			columns.add( columnName );
		}
		return columns;
	}
	/**