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

        // 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("53798.xlsx");


    Sheet testSheet  = wb.getSheetAt(0);
    // 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, -2);
    
    Row newRow = null; Cell newCell = null;
    // 2) attempt to create a new row IN PLACE of a removed row by a negative shift causes corrupted 
    // xlsx file with  unreadable data in the negative shifted row. 
    // NOTE it's ok to create any other row.

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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
    
    //saveReport(wb, new File("/tmp/53798.xlsx"));
    Workbook read = XSSFTestDataSamples.writeOutAndReadBack(wb);
    assertNotNull(read);

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  public void testBug53798a() throws IOException {
    Workbook wb = XSSFTestDataSamples.openSampleWorkbook("53798.xlsx");


    Sheet testSheet  = wb.getSheetAt(0);
    testSheet.shiftRows(3, 3, -1);
        for (Row r : testSheet) {
          r.getRowNum();
        }
    testSheet.shiftRows(6, 6, 1);

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    Sheet testSheet  = wb.getSheetAt(0);
    testSheet.shiftRows(3, 3, -1);
        for (Row r : testSheet) {
          r.getRowNum();
        }
    testSheet.shiftRows(6, 6, 1);
    
    //saveReport(wb, new File("/tmp/53798.xlsx"));
    Workbook read = XSSFTestDataSamples.writeOutAndReadBack(wb);
    assertNotNull(read);

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        Comment comment = sheet.getCellComment(0, 0);
        assertNotNull(comment);
        assertEquals("Amdocs", comment.getAuthor());
        assertEquals("Amdocs:\ntest\n", comment.getString().getString());
        
        sheet.shiftRows(0, 1, 1);


        // comment in row 0 is gone
        comment = sheet.getCellComment(0, 0);
        assertNull(comment);

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        Workbook w = new XSSFWorkbook();
        Sheet s = w.createSheet();
        for (int row = 0; row < 5000; ++row)
            s.addMergedRegion(new CellRangeAddress(row, row, 0, 3));


        s.shiftRows(0, 4999, 1);        // takes a long time...
  }
}

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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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       // 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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