Examples of SharedStringsTable

org.apache.poi.hssf.model.SharedStringsTable
org.apache.poi.xssf.model.SharedStringsTable
Table of strings shared across all sheets in a workbook.
A workbook may contain thousands of cells containing string (non-numeric) data. Furthermore this data is very likely to be repeated across many rows or columns. The goal of implementing a single string table that is shared across the workbook is to improve performance in opening and saving the file by only reading and writing the repetitive information once.

Consider for example a workbook summarizing information for cities within various countries. There may be a column for the name of the country, a column for the name of each city in that country, and a column containing the data for each city. In this case the country name is repetitive, being duplicated in many cells. In many cases the repetition is extensive, and a tremendous savings is realized by making use of a shared string table when saving the workbook. When displaying text in the spreadsheet, the cell table will just contain an index into the string table as the value of a cell, instead of the full string.

The shared string table contains all the necessary information for displaying the string: the text, formatting properties, and phonetic properties (for East Asian languages).
@author Nick Birch @author Yegor Kozlov

Examples of org.apache.poi.hssf.model.SharedStringsTable

    workbookDoc =
      WorkbookDocument.Factory.parse(basePart.getInputStream());
    
    PackagePart ssPart = getSinglePartByRelationType(SHARED_STRINGS_RELATION_TYPE, basePart);
    if (ssPart != null) {
      sharedStrings = new SharedStringsTable(ssPart);
    } else {
      
    }
  }

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Examples of org.apache.poi.hssf.model.SharedStringsTable

    HSSFXML xml = new HSSFXML(
        HXFDocument.openPackage(sampleFile)
    );
    assertNotNull(xml._getSharedStringsTable());
    
    SharedStringsTable sst = xml._getSharedStringsTable();
    assertEquals(10, sst.size());
    
    assertEquals("Lorem", sst.get(0));
    for(int i=0; i<sst.size(); i++) {
      assertEquals(sst.get(i), xml.getSharedString(i));
    }
    
    // Add a few more, then save and reload, checking
    //  changes have been kept
    sst.add("Foo");
    sst.add("Bar");
    sst.set(0, "LoremLorem");
    
    sst.write();
    
    xml = new HSSFXML(xml.getPackage());
    sst = xml._getSharedStringsTable();
    assertEquals(12, sst.size());
    
    assertEquals("LoremLorem", sst.get(0));
    for(int i=0; i<sst.size(); i++) {
      assertEquals(sst.get(i), xml.getSharedString(i));
    }
  }

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Examples of org.apache.poi.xssf.model.SharedStringsTable

 */
public class FromHowTo {
  public void processOneSheet(String filename) throws Exception {
    OPCPackage pkg = OPCPackage.open(filename);
    XSSFReader r = new XSSFReader( pkg );
    SharedStringsTable sst = r.getSharedStringsTable();


    XMLReader parser = fetchSheetParser(sst);


    // rId2 found by processing the Workbook
    // Seems to either be rId# or rSheet#

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Examples of org.apache.poi.xssf.model.SharedStringsTable

  }


  public void processAllSheets(String filename) throws Exception {
    OPCPackage pkg = OPCPackage.open(filename);
    XSSFReader r = new XSSFReader( pkg );
    SharedStringsTable sst = r.getSharedStringsTable();
    
    XMLReader parser = fetchSheetParser(sst);


    Iterator<InputStream> sheets = r.getSheetsData();
    while(sheets.hasNext()) {

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Examples of org.apache.poi.xssf.model.SharedStringsTable

     */
    public void test47278() throws Exception {
        XSSFWorkbook wb = (XSSFWorkbook)_testDataProvider.createWorkbook();
        XSSFSheet sheet = wb.createSheet();
        XSSFRow row = sheet.createRow(0);
        SharedStringsTable sst = wb.getSharedStringSource();
        assertEquals(0, sst.getCount());


        //case 1. cell.setCellValue(new XSSFRichTextString((String)null));
        XSSFCell cell_0 = row.createCell(0);
        XSSFRichTextString str = new XSSFRichTextString((String)null);
        assertNull(str.getString());
        cell_0.setCellValue(str);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_0.getCellType());


        //case 2. cell.setCellValue((String)null);
        XSSFCell cell_1 = row.createCell(1);
        cell_1.setCellValue((String)null);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_1.getCellType());
    }

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Examples of org.apache.poi.xssf.model.SharedStringsTable

    }
    try {
      Package pkg = Package.open(is);


      XSSFReader r = new XSSFReader(pkg);
      SharedStringsTable sst = r.getSharedStringsTable();
      SheetHandler handler = new SheetHandler(sst);


      XMLReader parser = fetchSheetParser(handler);


      Iterator<InputStream> sheets = r.getSheetsData();

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Examples of org.apache.poi.xssf.model.SharedStringsTable

     */
    public void test47278() {
        XSSFWorkbook wb = (XSSFWorkbook)_testDataProvider.createWorkbook();
        XSSFSheet sheet = wb.createSheet();
        XSSFRow row = sheet.createRow(0);
        SharedStringsTable sst = wb.getSharedStringSource();
        assertEquals(0, sst.getCount());


        //case 1. cell.setCellValue(new XSSFRichTextString((String)null));
        XSSFCell cell_0 = row.createCell(0);
        XSSFRichTextString str = new XSSFRichTextString((String)null);
        assertNull(str.getString());
        cell_0.setCellValue(str);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_0.getCellType());


        //case 2. cell.setCellValue((String)null);
        XSSFCell cell_1 = row.createCell(1);
        cell_1.setCellValue((String)null);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_1.getCellType());
    }

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Examples of org.apache.poi.xssf.model.SharedStringsTable

     */
    public void test47278() {
        XSSFWorkbook wb = (XSSFWorkbook)_testDataProvider.createWorkbook();
        XSSFSheet sheet = wb.createSheet();
        XSSFRow row = sheet.createRow(0);
        SharedStringsTable sst = wb.getSharedStringSource();
        assertEquals(0, sst.getCount());


        //case 1. cell.setCellValue(new XSSFRichTextString((String)null));
        XSSFCell cell_0 = row.createCell(0);
        XSSFRichTextString str = new XSSFRichTextString((String)null);
        assertNull(str.getString());
        cell_0.setCellValue(str);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_0.getCellType());


        //case 2. cell.setCellValue((String)null);
        XSSFCell cell_1 = row.createCell(1);
        cell_1.setCellValue((String)null);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_1.getCellType());
    }

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Examples of org.apache.poi.xssf.model.SharedStringsTable

    public void useSharedStringsTable() throws Exception {
        SXSSFWorkbook wb = new SXSSFWorkbook(null, 10, false, true);


        Field f = SXSSFWorkbook.class.getDeclaredField("_sharedStringSource");
        f.setAccessible(true);
        SharedStringsTable sss = (SharedStringsTable)f.get(wb);
        
        assertNotNull(sss);


        Row row = wb.createSheet("S1").createRow(0);


        row.createCell(0).setCellValue("A");
        row.createCell(1).setCellValue("B");
        row.createCell(2).setCellValue("A");


        XSSFWorkbook xssfWorkbook = (XSSFWorkbook) SXSSFITestDataProvider.instance.writeOutAndReadBack(wb);
        sss = (SharedStringsTable)f.get(wb);
        assertEquals(2, sss.getUniqueCount());
        wb.dispose();


        Sheet sheet1 = xssfWorkbook.getSheetAt(0);
        assertEquals("S1", sheet1.getSheetName());
        assertEquals(1, sheet1.getPhysicalNumberOfRows());

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Examples of org.apache.poi.xssf.model.SharedStringsTable

     */
    public void test47278() {
        XSSFWorkbook wb = (XSSFWorkbook)_testDataProvider.createWorkbook();
        XSSFSheet sheet = wb.createSheet();
        XSSFRow row = sheet.createRow(0);
        SharedStringsTable sst = wb.getSharedStringSource();
        assertEquals(0, sst.getCount());


        //case 1. cell.setCellValue(new XSSFRichTextString((String)null));
        XSSFCell cell_0 = row.createCell(0);
        XSSFRichTextString str = new XSSFRichTextString((String)null);
        assertNull(str.getString());
        cell_0.setCellValue(str);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_0.getCellType());


        //case 2. cell.setCellValue((String)null);
        XSSFCell cell_1 = row.createCell(1);
        cell_1.setCellValue((String)null);
        assertEquals(0, sst.getCount());
        assertEquals(XSSFCell.CELL_TYPE_BLANK, cell_1.getCellType());
    }

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