Examples of com.inmethod.grid.IDataSource

com.inmethod.grid.IDataSource

to get a DAO or service object result.setTotalCount(dao.getUserCount()); Collection users = dao.getUsers(query.getFrom(), query.getCount()); result.setItems(users.iterator()); } public IModel model(Object object) { return new DetachableUserModel(objecT); } } An example of situation when the row count can't be determined. The pagination then only allows to advance by one page. The idea is to retrieve n + 1 rows when n rows are requested to decide whether the next page should be available:

 IDataSource source = new IDataSource() { public void query(IQuery query, IQueryResult result) { UserDao dao = DaoManager.getUserDao(); // code to get a DAO or service object Collection users = dao.getUsers(query.getFrom(), query.getCount() + 1); if (user.size() < query.getCount() + 1) { result.setTotalCount(IQueryResult.NO_MORE_ITEMS); } else { result.setTotalCount(IQueryResult.MORE_ITEMS); } result.setItems(users.iterator()); } public IModel model(Object object) { return new DetachableUserModel(objecT); }   }

@author Matej Knopp

  private void initialize() {
    if (queryResult == null) {
      queryResult = new QueryResult();
      Query query = new Query(queryResult);


      IDataSource dataSource = getDataSource();


      int oldItemCount = realItemCount;


      // query for items
      dataSource.query(wrapQuery(query), queryResult);


      // process the QueryResult
      queryResult.process(dataSource);


      // check for situation when we didn't get any items, but we know the real count
      // this is not a case when there are no items at all, just the case when there are no items on current page
      // but possible items on previous pages
      if (queryResult.itemCache.size() == 0 && realItemCount != UNKOWN_COUNT && 
        realItemCount != oldItemCount && realItemCount > 0) {
        
        // the data must have changed, the number of items has been reduced. try move to
        // last page
        int page = getPageCount() - 1;
        if (page < 0) {
          page = 0;
        }
        setCurrentPage(page);


        // try reloading the items
        queryResult = new QueryResult();
        query = new Query(queryResult);


        // query for items
        dataSource.query(query, queryResult);


        // process the QueryResult
        queryResult.process(dataSource);
      }
      else if (realItemCount == 0)

Examples of com.inmethod.grid.IDataSource

Related Classes of com.inmethod.grid.IDataSource