Examples of org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator$CellValue

org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator
Mimics the 'data view' of a cell. This allows formula evaluator to return a CellValue instead of precasting the value to String or Number or boolean type. @author Amol S. Deshmukh < amolweb at ya hoo dot com >

    HSSFRow row = sheet.createRow(0);
    HSSFCell cell = row.createCell((short)0);
    cell.setCellFormula("B1%");
    row.createCell((short)1).setCellValue(50.0);
    
    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(sheet, wb);
    fe.setCurrentRow(row);
    CellValue cv;
    try {
      cv = fe.evaluate(cell);
    } catch (RuntimeException e) {
      if(e.getCause() instanceof NullPointerException) {
        throw new AssertionFailedError("Identified bug 44608");
      }
      // else some other unexpected error

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    // this definitely would have failed due to 27349
    assertEquals("VLOOKUP(1,'DATA TABLE'!$A$8:'DATA TABLE'!$B$10,2)", cell
        .getCellFormula());


    // We might as well evaluate the formula
    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(sheet, wb);
    fe.setCurrentRow(row);
    CellValue cv = fe.evaluate(cell);


    assertEquals(HSSFCell.CELL_TYPE_NUMERIC, cv.getCellType());
    assertEquals(3.0, cv.getNumberValue(), 0.0);
  }

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        throw new RuntimeException(e);
      }
    }
    
    // use POI's evaluator as an extra sanity check
    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(sheet, wb);
    fe.setCurrentRow(row);
    CellValue cv;
    cv = fe.evaluate(cell);
    assertEquals(HSSFCell.CELL_TYPE_NUMERIC, cv.getCellType());
    assertEquals(1.0, cv.getNumberValue(), 0.0);
    
    cv = fe.evaluate(row.getCell(1));
    assertEquals(HSSFCell.CELL_TYPE_BOOLEAN, cv.getCellType());
    assertEquals(true, cv.getBooleanValue());
  }

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    addCell(sheet1, 67, 1, 9.0); // B68
    addCell(sheet1, 68, 1, 10.0); // B69


    double expectedResult = (4.0 * 8.0 + 5.0 * 9.0) / 10.0;


    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(sheet1, wb);
    fe.setCurrentRow(row);
    CellValue cv = fe.evaluate(cell);


    assertEquals(HSSFCell.CELL_TYPE_NUMERIC, cv.getCellType());
    assertEquals(expectedResult, cv.getNumberValue(), 0.0);
  }

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    public void genericTest() throws Exception {
        HSSFSheet s = workbook.getSheetAt( 0 );
        HSSFRow r = s.getRow(getBeginRow());
        short endcolnum = r.getLastCellNum();
        HSSFFormulaEvaluator evaluator = new HSSFFormulaEvaluator(s, workbook);
        evaluator.setCurrentRow(r);


        HSSFCell c = null;
        for (short colnum=getBeginCol(); colnum < endcolnum; colnum++) {
            try {
            c = r.getCell(colnum);
            if (c==null || c.getCellType() != HSSFCell.CELL_TYPE_FORMULA)
                continue;
            
            HSSFFormulaEvaluator.CellValue actualValue = evaluator.evaluate(c);
            
            HSSFCell expectedValueCell = getExpectedValueCell(s, r, c);
            assertEquals("Formula: " + c.getCellFormula() 
                    + " @ " + getBeginRow() + ":" + colnum, 
                    expectedValueCell, actualValue);

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    // put some values in the cells to make the evaluation more interesting
    sheet.createRow(32768).createCell(0).setCellValue(31);
    sheet.createRow(32769).createCell(0).setCellValue(11);


    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
    CellValue result;
    try {
      result = fe.evaluate(cell);
    } catch (FormulaParseException e) {
      if (!e.getMessage().equals("Found reference to named range \"A\", but that named range wasn't defined!")) {
        throw new AssertionFailedError("Identifed bug 44539");
      }
      throw e;

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  public void testEvaluateMultipleWorkbooks() {
    HSSFWorkbook wbA = HSSFTestDataSamples.openSampleWorkbook("multibookFormulaA.xls");
    HSSFWorkbook wbB = HSSFTestDataSamples.openSampleWorkbook("multibookFormulaB.xls");


    HSSFFormulaEvaluator evaluatorA = new HSSFFormulaEvaluator(wbA);
    HSSFFormulaEvaluator evaluatorB = new HSSFFormulaEvaluator(wbB);


    // Hook up the workbook evaluators to enable evaluation of formulas across books
    String[] bookNames = { "multibookFormulaA.xls", "multibookFormulaB.xls", };
    HSSFFormulaEvaluator[] evaluators = { evaluatorA, evaluatorB, };
    HSSFFormulaEvaluator.setupEnvironment(bookNames, evaluators);


    HSSFCell cell;


    HSSFSheet aSheet1 = wbA.getSheetAt(0);
    HSSFSheet bSheet1 = wbB.getSheetAt(0);


    // Simple case - single link from wbA to wbB
    confirmFormula(wbA, 0, 0, 0, "[multibookFormulaB.xls]BSheet1!B1");
    cell = aSheet1.getRow(0).getCell(0);
    confirmEvaluation(35, evaluatorA, cell);




    // more complex case - back link into wbA
    // [wbA]ASheet1!A2 references (among other things) [wbB]BSheet1!B2
    confirmFormula(wbA, 0, 1, 0, "[multibookFormulaB.xls]BSheet1!$B$2+2*A3");
    // [wbB]BSheet1!B2 references (among other things) [wbA]AnotherSheet!A1:B2
    confirmFormula(wbB, 0, 1, 1, "SUM([multibookFormulaA.xls]AnotherSheet!$A$1:$B$2)+B3");


    cell = aSheet1.getRow(1).getCell(0);
    confirmEvaluation(264, evaluatorA, cell);


    // change [wbB]BSheet1!B3 (from 50 to 60)
    HSSFCell cellB3 = bSheet1.getRow(2).getCell(1);
    cellB3.setCellValue(60);
    evaluatorB.notifyUpdateCell(cellB3);
    confirmEvaluation(274, evaluatorA, cell);


    // change [wbA]ASheet1!A3 (from 100 to 80)
    HSSFCell cellA3 = aSheet1.getRow(2).getCell(0);
    cellA3.setCellValue(80);

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    HSSFWorkbook wb = new HSSFWorkbook();
    HSSFSheet sheet = wb.createSheet("Sheet1");
    HSSFRow row = sheet.createRow(0);
    HSSFCell cell = row.createCell(0);
    cell.setCellFormula("1+IF(1,,)");
    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
    CellValue cv;
    try {
      cv = fe.evaluate(cell);
    } catch (RuntimeException e) {
      throw new AssertionFailedError("Missing arg result not being handled correctly.");
    }
    assertEquals(HSSFCell.CELL_TYPE_NUMERIC, cv.getCellType());
    // adding blank to 1.0 gives 1.0
    assertEquals(1.0, cv.getNumberValue(), 0.0);


    // check with string operand
    cell.setCellFormula("\"abc\"&IF(1,,)");
    fe.notifySetFormula(cell);
    cv = fe.evaluate(cell);
    assertEquals(HSSFCell.CELL_TYPE_STRING, cv.getCellType());
    // adding blank to "abc" gives "abc"
    assertEquals("abc", cv.getStringValue());


    // check CHOOSE()
    cell.setCellFormula("\"abc\"&CHOOSE(2,5,,9)");
    fe.notifySetFormula(cell);
    cv = fe.evaluate(cell);
    assertEquals(HSSFCell.CELL_TYPE_STRING, cv.getCellType());
    // adding blank to "abc" gives "abc"
    assertEquals("abc", cv.getStringValue());
  }

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    HSSFWorkbook wb = new HSSFWorkbook();
    HSSFSheet sheet = wb.createSheet("Sheet1");
    HSSFRow row = sheet.createRow(0);
    HSSFCell cellA1 = row.createCell(0);
    HSSFCell cellB1 = row.createCell(1);
    HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);


    cellA1.setCellFormula("B1+2.2");
    cellB1.setCellValue(1.5);


    fe.notifyUpdateCell(cellA1);
    fe.notifyUpdateCell(cellB1);


    CellValue cv;
    cv = fe.evaluate(cellA1);
    assertEquals(3.7, cv.getNumberValue(), 0.0);


    cellB1.setCellType(HSSFCell.CELL_TYPE_BLANK);
    fe.notifyUpdateCell(cellB1);
    cv = fe.evaluate(cellA1); // B1 was used to evaluate A1
    assertEquals(2.2, cv.getNumberValue(), 0.0);


    cellB1.setCellValue(0.4);  // changing B1, so A1 cached result should be cleared
    fe.notifyUpdateCell(cellB1);
    cv = fe.evaluate(cellA1);
    if (cv.getNumberValue() == 2.2) {
      // looks like left-over cached result from before change to B1
      throw new AssertionFailedError("Identified bug 46053");
    }
    assertEquals(2.6, cv.getNumberValue(), 0.0);

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    CellReference cellRef = new CellReference(wb.getName("QUANT").getRefersToFormula());
    HSSFCell cell = wb.getSheet(cellRef.getSheetName()).getRow(cellRef.getRow()).getCell((int)cellRef.getCol());
    cell.setCellValue(NEW_QUANT);
    cell = wb2.getSheet("CostSheet").getRow(1).getCell(1);
    cell.setCellValue(NEW_PART_COST);
    HSSFFormulaEvaluator evaluator = new HSSFFormulaEvaluator(wb);
    HSSFFormulaEvaluator evaluatorCost = new HSSFFormulaEvaluator(wb2);
    String[] bookNames = { "XRefCalc.xls", "XRefCalcData.xls" };
    HSSFFormulaEvaluator[] evaluators = { evaluator, evaluatorCost, };
    HSSFFormulaEvaluator.setupEnvironment(bookNames, evaluators);
    cellRef = new CellReference(wb.getName("UNITCOST").getRefersToFormula());
    HSSFCell uccell = wb.getSheet(cellRef.getSheetName()).getRow(cellRef.getRow()).getCell((int)cellRef.getCol());

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