Examples of org.apache.poi.ss.usermodel.Sheet.shiftRows()

org.apache.poi.ss.usermodel.Sheet.shiftRows()
Shifts rows between startRow and endRow n number of rows. If you use a negative number, it will shift rows up. Code ensures that rows don't wrap around. Calls shiftRows(startRow, endRow, n, false, false);
Additionally shifts merged regions that are completely defined in these rows (ie. merged 2 cells on a row to be shifted). @param startRow the row to start shifting @param endRow the row to end shifting @param n the number of rows to shift

       
       // Test the last Row number it currently correct
       assertEquals(2, sheet.getLastRowNum());
       
       // Shift the first row to the end
       sheet.shiftRows(0, 0, 3);
       assertEquals(3, sheet.getLastRowNum());
       assertEquals(-1,         sheet.getRow(0).getLastCellNum());
       assertEquals("Cell A,2", sheet.getRow(1).getCell(0).getStringCellValue());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(3).getCell(0).getStringCellValue());

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       assertEquals("Cell A,2", sheet.getRow(1).getCell(0).getStringCellValue());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(3).getCell(0).getStringCellValue());
       
       // Shift the 2nd row up to the first one
       sheet.shiftRows(1, 1, -1);
       assertEquals(3, sheet.getLastRowNum());
       assertEquals("Cell A,2", sheet.getRow(0).getCell(0).getStringCellValue());
       assertEquals(-1,         sheet.getRow(1).getLastCellNum());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(3).getCell(0).getStringCellValue());

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       assertEquals(-1,         sheet.getRow(1).getLastCellNum());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(3).getCell(0).getStringCellValue());


       // Shift the 4th row up into the gap in the 3rd row
       sheet.shiftRows(3, 3, -2);
       assertEquals(2, sheet.getLastRowNum());
       assertEquals("Cell A,2", sheet.getRow(0).getCell(0).getStringCellValue());
       assertEquals("Cell A,1", sheet.getRow(1).getCell(0).getStringCellValue());
       assertEquals("Cell A,3", sheet.getRow(2).getCell(0).getStringCellValue());
       assertEquals(-1,         sheet.getRow(3).getLastCellNum());

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    }


    private void bug53798Work(Workbook wb, File xlsOutput) throws IOException {
        Sheet testSheet = wb.getSheetAt(0);


        testSheet.shiftRows(2, 2, 1);


        saveAndReloadReport(wb, xlsOutput);


        // 1) corrupted xlsx (unreadable data in the first row of a shifted group) already comes about
        // when shifted by less than -1 negative amount (try -2)

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        saveAndReloadReport(wb, xlsOutput);


        // 1) corrupted xlsx (unreadable data in the first row of a shifted group) already comes about
        // when shifted by less than -1 negative amount (try -2)
        testSheet.shiftRows(3, 3, -1);


        saveAndReloadReport(wb, xlsOutput);


        testSheet.shiftRows(2, 2, 1);

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        // when shifted by less than -1 negative amount (try -2)
        testSheet.shiftRows(3, 3, -1);


        saveAndReloadReport(wb, xlsOutput);


        testSheet.shiftRows(2, 2, 1);


        saveAndReloadReport(wb, xlsOutput);


        Row newRow = null;
        Cell newCell = null;

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        // 3) once a negative shift has been made any attempt to shift another group of rows
        // (note: outside of previously negative shifted rows) by a POSITIVE amount causes POI exception:
        // org.apache.xmlbeans.impl.values.XmlValueDisconnectedException.
        // NOTE: another negative shift on another group of rows is successful, provided no new rows in
        // place of previously shifted rows were attempted to be created as explained above.
        testSheet.shiftRows(6, 7, 1);   // -- CHANGE the shift to positive once the behaviour of
                                        // the above has been tested


        saveAndReloadReport(wb, xlsOutput);
    }

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        assertEquals("[1]!LUCANET(\"Ist\")", cFunc.getCellFormula());
        Cell cRef = sheet.getRow(3).createCell(1);
        cRef.setCellFormula("A3");
        
        // Shift it down one row
        sheet.shiftRows(1, sheet.getLastRowNum(), 1);
        
        // Check the new formulas: Function won't change, Reference will
        cFunc = sheet.getRow(4).getCell(0);
        assertEquals("[1]!LUCANET(\"Ist\")", cFunc.getCellFormula());
        cRef = sheet.getRow(4).getCell(1);

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      Workbook wb = XSSFTestDataSamples.openSampleWorkbook("48495.xlsx");
      
      assertSheetOrder(wb, "Sheet1");
      
      Sheet sheet = wb.getSheetAt(0);
      sheet.shiftRows(2, sheet.getLastRowNum(), 1, true, false);
      Row newRow = sheet.getRow(2);
      if (newRow == null) newRow = sheet.createRow(2);
      newRow.createCell(0).setCellValue(" Another Header");
      wb.cloneSheet(0);

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  }


  private void bug53798Work(Workbook wb, File xlsOutput) throws IOException {
    Sheet testSheet  = wb.getSheetAt(0);


    testSheet.shiftRows(2, 2, 1);


    saveAndReloadReport(wb, xlsOutput);


    // 1) corrupted xlsx (unreadable data in the first row of a shifted group) already comes about
    // when shifted by less than -1 negative amount (try -2)

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