What if the pagination is server side then how it will calculate because its dynamic ?  I have server side pagination so i changed walk method like this

public void walk(FacesContext context, DataVisitor visitor, Range range, Object argument) {

    boolean reload = false;

    if (null != context && context.getCurrentPhaseId().equals(PhaseId.RENDER_RESPONSE)) {

      reload = true;

    }

    wrappedKeys = new ArrayList<BigInteger>();

 

    SequenceRange sr = (SequenceRange) range;

    int currentRow = sr.getFirstRow();

    rows = sr.getRows();

 

    if (currentRow == 0) {

      pageNo = 1;

    } else

      pageNo = (currentRow / rows) + 1;

 

    totalRecord= createSelectWebSeriveQuery(reload);

    MyBean.setDiscrepenciesResultListLoaded(totalRecord);

 

    if (!totalRecord.isEmpty()) {

      for (SomeObj item : totalRecord) {

        wrappedKeys.add(item.getId());

        wrappedData.put(item.getId(), item);

        // Once data populated to wrappedKeys and wrappedData call the

        // process method using visitor parameter

        visitor.process(context, item.getId(), argument);

      }

    }

  }

Now issue is that I have 15982 total number of record So total Pages 160

Total Number of record  = 15982

rows = 100

and sr.getFirstRow(); always give FirstRow So this will be like this

if sr.getFirstRow() = 0 then PageNumber=1;

if sr.getFirstRow() = 100 then PageNumber=2;

if sr.getFirstRow() = 200 then PageNumber=3;

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if sr.getFirstRow() = 15700 then PageNumber=158;

if sr.getFirstRow() = 15800 then PageNumber=159;

But in last case also sr.getFirstRow() will give 15882(Every time 100 less)

if sr.getFirstRow() = 15882 then PageNumber=159; (While it should be 160 in this case)

   This creating a issue Can you tell me what is wrong the logic ?

Do you mean logic in walk method is wrong as this method change by me for server side pagination.