Examples of org.apache.poi.ss.usermodel.DataFormatter

org.apache.poi.ss.usermodel.DataFormatter
DataFormatter contains methods for formatting the value stored in an Cell. This can be useful for reports and GUI presentations when you need to display data exactly as it appears in Excel. Supported formats include currency, SSN, percentages, decimals, dates, phone numbers, zip codes, etc.
Internally, formats will be implemented using subclasses of {@link Format}such as {@link DecimalFormat} and {@link SimpleDateFormat}. Therefore the formats used by this class must obey the same pattern rules as these Format subclasses. This means that only legal number pattern characters ("0", "#", ".", "," etc.) may appear in number formats. Other characters can be inserted before or after the number pattern to form a prefix or suffix.

For example the Excel pattern "$#,##0.00 "USD"_);($#,##0.00 "USD")" will be correctly formatted as "$1,000.00 USD" or "($1,000.00 USD)". However the pattern "00-00-00" is incorrectly formatted by DecimalFormat as "000000--". For Excel formats that are not compatible with DecimalFormat, you can provide your own custom {@link Format} implementationvia DataFormatter.addFormat(String,Format). The following custom formats are already provided by this class:
```
 SSN "000-00-0000"
 Phone Number "(###) ###-####"
 Zip plus 4 "00000-0000"
 
 
```
If the Excel format pattern cannot be parsed successfully, then a default format will be used. The default number format will mimic the Excel General format: "#" for whole numbers and "#.##########" for decimal numbers. You can override the default format pattern with DataFormatter.setDefaultNumberFormat(Format). Note: the default format will only be used when a Format cannot be created from the cell's data format string.
Note that by default formatted numeric values are trimmed. Excel formats can contain spacers and padding and the default behavior is to strip them off.

Example:

Consider a numeric cell with a value 12.343 and format "##.##_ ". The trailing underscore and space ("_ ") in the format adds a space to the end and Excel formats this cell as "12.34 ", but DataFormatter trims the formatted value and returns "12.34".
You can enable spaces by passing the emulateCsv=true flag in the DateFormatter cosntructor. If set to true, then the output tries to conform to what you get when you take an xls or xlsx in Excel and Save As CSV file:
- returned values are not trimmed
- Invalid dates are formatted as 255 pound signs ("#")
- simulate Excel's handling of a format string of all # when the value is 0. Excel will output "", DataFormatter will output "0".
@author James May (james dot may at fmr dot com) @author Robert Kish

           StylesTable styles,
           ReadOnlySharedStringsTable strings,
           InputStream sheetInputStream)
           throws IOException, SAXException {


       DataFormatter formatter;
       if(locale == null) {
          formatter = new DataFormatter();
       } else  {
          formatter = new DataFormatter(locale);
       }
      
       InputSource sheetSource = new InputSource(sheetInputStream);
       SAXParserFactory saxFactory = SAXParserFactory.newInstance();
       try {

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     */
    public void test47490() throws Exception {
       XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("GeneralFormatTests.xlsx");
       Sheet s = wb.getSheetAt(1);
       Row r;
       DataFormatter df = new DataFormatter();
       
       r = s.getRow(1);
       assertEquals(1.0, r.getCell(2).getNumericCellValue());
       assertEquals("General", r.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("1", df.formatCellValue(r.getCell(2)));
       assertEquals("1", df.formatRawCellContents(1.0, -1, "@"));
       assertEquals("1", df.formatRawCellContents(1.0, -1, "General"));
              
       r = s.getRow(2);
       assertEquals(12.0, r.getCell(2).getNumericCellValue());
       assertEquals("General", r.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("12", df.formatCellValue(r.getCell(2)));
       assertEquals("12", df.formatRawCellContents(12.0, -1, "@"));
       assertEquals("12", df.formatRawCellContents(12.0, -1, "General"));
       
       r = s.getRow(3);
       assertEquals(123.0, r.getCell(2).getNumericCellValue());
       assertEquals("General", r.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("123", df.formatCellValue(r.getCell(2)));
       assertEquals("123", df.formatRawCellContents(123.0, -1, "@"));
       assertEquals("123", df.formatRawCellContents(123.0, -1, "General"));
    }

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            // DataFormatter instances that will be needed to, respectively,
            // force evaluation of forumlae found in cells and create a
            // formatted String encapsulating the cells contents.
            this.workbook = WorkbookFactory.create(fis);
            this.evaluator = this.workbook.getCreationHelper().createFormulaEvaluator();
            this.formatter = new DataFormatter(true);
        }
        finally {
            if(fis != null) {
                fis.close();
            }

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        if(args.length == 0) {
           throw new IllegalArgumentException("Filename must be given");
        }
        
        Workbook wb = WorkbookFactory.create(new File(args[0]));
        DataFormatter formatter = new DataFormatter();
       
        for(int sn=0; sn<wb.getNumberOfSheets(); sn++) {
           Sheet sheet = wb.getSheetAt(sn);
           System.out.println("Sheet #" + sn + " : " + sheet.getSheetName());
           
           for(Row row : sheet) {
              System.out.println("  Row " + row.getRowNum());
              
              for(Cell cell : row) {
                 CellReference ref = new CellReference(cell);
                 System.out.print("    " + ref.formatAsString());
                 System.out.print(" (" + cell.getColumnIndex() + ") ");
                 
                 CellStyle style = cell.getCellStyle();
                 System.out.print("Format=" + style.getDataFormatString() + " ");
                 System.out.print("FG=" + renderColor(style.getFillForegroundColorColor()) + " ");
                 System.out.print("BG=" + renderColor(style.getFillBackgroundColorColor()) + " ");
                 
                 Font font = wb.getFontAt( style.getFontIndex() );
                 System.out.print("Font=" + font.getFontName() + " ");
                 System.out.print("FontColor=");
                 if(font instanceof HSSFFont) {
                    System.out.print( renderColor( ((HSSFFont)font).getHSSFColor((HSSFWorkbook)wb)) );
                 }
                 if(font instanceof XSSFFont) {
                    System.out.print( renderColor( ((XSSFFont)font).getXSSFColor()) );
                 }
                 
                 System.out.println();
                 System.out.println("        " + formatter.formatCellValue(cell));
              }
           }
           
           System.out.println();
        }

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            this.sharedStringsTable = strings;
            this.minColumnCount = cols;
            this.output = target;
            this.value = new StringBuffer();
            this.nextDataType = xssfDataType.NUMBER;
            this.formatter = new DataFormatter();
        }

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   public XSSFSheetXMLHandler(
           StylesTable styles,
           ReadOnlySharedStringsTable strings,
           SheetContentsHandler sheetContentsHandler,
           boolean formulasNotResults) {
       this(styles, strings, sheetContentsHandler, new DataFormatter(), formulasNotResults);
   }

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    @Test
    public void bug47490() throws Exception {
       XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("GeneralFormatTests.xlsx");
       Sheet s = wb.getSheetAt(1);
       Row r;
       DataFormatter df = new DataFormatter();
       
       r = s.getRow(1);
       assertEquals(1.0, r.getCell(2).getNumericCellValue(), 0);
       assertEquals("General", r.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("1", df.formatCellValue(r.getCell(2)));
       assertEquals("1", df.formatRawCellContents(1.0, -1, "@"));
       assertEquals("1", df.formatRawCellContents(1.0, -1, "General"));
              
       r = s.getRow(2);
       assertEquals(12.0, r.getCell(2).getNumericCellValue(), 0);
       assertEquals("General", r.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("12", df.formatCellValue(r.getCell(2)));
       assertEquals("12", df.formatRawCellContents(12.0, -1, "@"));
       assertEquals("12", df.formatRawCellContents(12.0, -1, "General"));
       
       r = s.getRow(3);
       assertEquals(123.0, r.getCell(2).getNumericCellValue(), 0);
       assertEquals("General", r.getCell(2).getCellStyle().getDataFormatString());
       assertEquals("123", df.formatCellValue(r.getCell(2)));
       assertEquals("123", df.formatRawCellContents(123.0, -1, "@"));
       assertEquals("123", df.formatRawCellContents(123.0, -1, "General"));
    }

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        Sheet sheet = wb.getSheet("Sheet1");
        Row row = sheet.getRow(1);
        Cell cell = row.getCell(2);
        assertTrue(DateUtil.isCellDateFormatted(cell));
        
        DataFormatter fmt = new DataFormatter();
        assertEquals("yyyy\\-mm\\-dd\\Thh:mm", cell.getCellStyle().getDataFormatString());
        assertEquals("2012-08-08T22:59", fmt.formatCellValue(cell));
    }

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        // Check the value - will be zero as it is <c><v/></c>
        assertEquals(0.0, cell.getNumericCellValue(), 0.001);
        
        // Try to format
        DataFormatter formatter = new DataFormatter();
        formatter.formatCellValue(cell);
        
        // Check the formatting
        assertEquals("0", formatter.formatCellValue(cell));
    }

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    public static double getColumnWidth(Sheet sheet, int column, boolean useMergedCells){
        AttributedString str;
        TextLayout layout;


        Workbook wb = sheet.getWorkbook();
        DataFormatter formatter = new DataFormatter();
        Font defaultFont = wb.getFontAt((short) 0);


        str = new AttributedString(String.valueOf(defaultChar));
        copyAttributes(defaultFont, str, 0, 1);
        layout = new TextLayout(str.getIterator(), fontRenderContext);

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