DO NOT REPLY [Bug 51673] groupRow in SXXSF.Sheet causes unreadable content

[bu...@apache.org]

https://issues.apache.org/bugzilla/show_bug.cgi?id=51673

--- Comment #3 from Yegor Kozlov <ye...@dinom.ru> 2012-02-29 10:58:51 UTC ---
Support for grouping rows in SXSSF has been committed in r1295058

Please note that the rows being grouped must be in the memory window, you
cannot write 1000000 rows and then group rows 100-200. 
Workbook wb = new SXSSFWorkbook(100);

        Sheet sh = wb.createSheet();

        for (int rownum = 0; rownum < 1000; rownum++) {
            Row row = sh.createRow(rownum);
            if(rownum == 200)  {
                sh.groupRow(100, 200);
            }

        }

        for (int rownum = 0; rownum < 1000; rownum++) {
            Row row = sh.createRow(rownum);
        }
        sh.groupRow(100, 200);

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