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change cell type to error when setting Double.NaN or Infinities, see Bugzilla 49761 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@992591 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov 2010-09-04 12:33:09 +00:00
parent 5fc4b570ca
commit 6f9470cc89
5 changed files with 90 additions and 18 deletions
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1
src/documentation/content/xdocs/status.xml
View File

@ -34,6 +34,7 @@
<changes>
<release version="3.7-beta3" date="2010-??-??">
<action dev="poi-developers" type="fix">49761 - change cell type to error when setting Double.NaN or Infinities</action>
<action dev="poi-developers" type="fix">49833 - ensure that CTNumPr is included in poi-ooxml-schemas.jar</action>
<action dev="POI-DEVELOPERS" type="fix">49841 - fixed LEFT and RIGHT to return #VALUE! when called with a negative operand </action>
<action dev="POI-DEVELOPERS" type="fix">49783 - fixed evaluation of XSSF workbooks containing formulas with reference errors (#REF!)</action>

17
src/java/org/apache/poi/hssf/usermodel/HSSFCell.java
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@ -46,11 +46,7 @@ import org.apache.poi.hssf.record.common.UnicodeString;
import org.apache.poi.hssf.record.formula.ExpPtg;
import org.apache.poi.hssf.record.formula.Ptg;
import org.apache.poi.hssf.record.formula.eval.ErrorEval;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Comment;
import org.apache.poi.ss.usermodel.Hyperlink;
import org.apache.poi.ss.usermodel.RichTextString;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.ss.util.NumberToTextConverter;
@ -464,6 +460,15 @@ public class HSSFCell implements Cell {
* will change the cell to a numeric cell and set its value.
*/
public void setCellValue(double value) {
if(Double.isInfinite(value)) {
// Excel does not support positive/negative infinities,
// rather, it gives a #DIV/0! error in these cases.
setCellErrorValue(FormulaError.DIV0.getCode());
} else if (Double.isNaN(value)){
// Excel does not support Not-a-Number (NaN),
// instead it immediately generates a #NUM! error.
setCellErrorValue(FormulaError.NUM.getCode());
} else {
int row=_record.getRow();
short col=_record.getColumn();
short styleIndex=_record.getXFIndex();
@ -480,6 +485,8 @@ public class HSSFCell implements Cell {
}
}
}
/**
* set a date value for the cell. Excel treats dates as numeric so you will need to format the cell as
* a date.

9
src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFCell.java
View File

@ -218,7 +218,14 @@ public final class XSSFCell implements Cell {
* will change the cell to a numeric cell and set its value.
*/
public void setCellValue(double value) {
if(Double.isInfinite(value) || Double.isNaN(value)) {
if(Double.isInfinite(value)) {
// Excel does not support positive/negative infinities,
// rather, it gives a #DIV/0! error in these cases.
_cell.setT(STCellType.E);
_cell.setV(FormulaError.DIV0.getString());
} else if (Double.isNaN(value)){
// Excel does not support Not-a-Number (NaN),
// instead it immediately generates an #NUM! error.
_cell.setT(STCellType.E);
_cell.setV(FormulaError.NUM.getString());
} else {

2
src/testcases/org/apache/poi/hssf/usermodel/TestHSSFCell.java
View File

@ -320,4 +320,6 @@ public final class TestHSSFCell extends BaseTestCell {
assertEquals("The maximum length of cell contents (text) is 32,767 characters", e.getMessage());
}
}
}

55
src/testcases/org/apache/poi/ss/usermodel/BaseTestCell.java
View File

@ -489,4 +489,59 @@ public abstract class BaseTestCell extends TestCase {
int i2 = cell.getCellStyle().getIndex();
assertEquals(i1, i2);
}
/**
* Excel's implementation of floating number arithmetic does not fully adhere to IEEE 754:
*
* From http://support.microsoft.com/kb/78113:
*
* <ul>
* <li> Positive/Negative Infinities:
* Infinities occur when you divide by 0. Excel does not support infinities, rather,
* it gives a #DIV/0! error in these cases.
* </li>
* <li>
* Not-a-Number (NaN):
* NaN is used to represent invalid operations (such as infinity/infinity,
* infinity-infinity, or the square root of -1). NaNs allow a program to
* continue past an invalid operation. Excel instead immediately generates
* an error such as #NUM! or #DIV/0!.
* </li>
* </ul>
*/
public void testNanAndInfinity() {
Workbook wb = _testDataProvider.createWorkbook();
Sheet workSheet = wb.createSheet("Sheet1");
Row row = workSheet.createRow(0);
Cell cell0 = row.createCell(0);
cell0.setCellValue(Double.NaN);
assertEquals("Double.NaN should change cell type to CELL_TYPE_ERROR", Cell.CELL_TYPE_ERROR, cell0.getCellType());
assertEquals("Double.NaN should change cell value to #NUM!", ErrorConstants.ERROR_NUM, cell0.getErrorCellValue());
Cell cell1 = row.createCell(1);
cell1.setCellValue(Double.POSITIVE_INFINITY);
assertEquals("Double.POSITIVE_INFINITY should change cell type to CELL_TYPE_ERROR", Cell.CELL_TYPE_ERROR, cell1.getCellType());
assertEquals("Double.POSITIVE_INFINITY should change cell value to #DIV/0!", ErrorConstants.ERROR_DIV_0, cell1.getErrorCellValue());
Cell cell2 = row.createCell(2);
cell2.setCellValue(Double.NEGATIVE_INFINITY);
assertEquals("Double.NEGATIVE_INFINITY should change cell type to CELL_TYPE_ERROR", Cell.CELL_TYPE_ERROR, cell2.getCellType());
assertEquals("Double.NEGATIVE_INFINITY should change cell value to #DIV/0!", ErrorConstants.ERROR_DIV_0, cell2.getErrorCellValue());
wb = _testDataProvider.writeOutAndReadBack(wb);
row = wb.getSheetAt(0).getRow(0);
cell0 = row.getCell(0);
assertEquals(Cell.CELL_TYPE_ERROR, cell0.getCellType());
assertEquals(ErrorConstants.ERROR_NUM, cell0.getErrorCellValue());
cell1 = row.getCell(1);
assertEquals(Cell.CELL_TYPE_ERROR, cell1.getCellType());
assertEquals(ErrorConstants.ERROR_DIV_0, cell1.getErrorCellValue());
cell2 = row.getCell(2);
assertEquals(Cell.CELL_TYPE_ERROR, cell2.getCellType());
assertEquals(ErrorConstants.ERROR_DIV_0, cell2.getErrorCellValue());
}
}