[struts2] [Jqueryplugin 3.0.2] showcase.war -> grid

[khekhone yvan]

i deploy war but i dont understand the JsonTable.java
there something magic on this code .
i cannot see how the my list was stored
code JSONTable

  public String execute()
  {
    log.debug("Page " + getPage()+" Rows " + getRows() +" Sorting Order "+ getSord()+" Index Row :" + getSidx());
    log.debug("Search :" + searchField + " " + searchOper + " " + searchString);

    Object list = session.get("mylist");
    if (list != null)
    {
      myCustomers = (List<Customer>) list;
    }
    else
    {
      log.debug("Build new List");
      myCustomers = CustomerDAO.buildList();
    }

    if (getSord() != null && getSord().equalsIgnoreCase("asc"))
    {
      Collections.sort(myCustomers);
    }
    if (getSord() != null && getSord().equalsIgnoreCase("desc"))
    {
      Collections.sort(myCustomers);
      Collections.reverse(myCustomers);
    }

    setRecord(CustomerDAO.getCustomersCount(myCustomers));

    int to = (getRows() * getPage());
    int from = to - getRows();

    if (to > getRecord()) to = getRecord();

    if (loadonce)
    {
      setGridModel(myCustomers);
    }
    else
    {
      if (searchString != null && searchOper != null)
      {
        int id = Integer.parseInt(searchString);
        if (searchOper.equalsIgnoreCase("eq"))
        {
          log.debug("search id equals " + id);
          List<Customer> cList = new ArrayList<Customer>();
          cList.add(CustomerDAO.findById(myCustomers, id));
          setGridModel(cList);
        }
        else if (searchOper.equalsIgnoreCase("ne"))
        {
          log.debug("search id not " + id);
          setGridModel(CustomerDAO.findNotById(myCustomers, id, from, to));
        }
        else if (searchOper.equalsIgnoreCase("lt"))
        {
          log.debug("search id lesser then " + id);
          setGridModel(CustomerDAO.findLesserAsId(myCustomers, id, from, to));
        }
        else if (searchOper.equalsIgnoreCase("gt"))
        {
          log.debug("search id greater then " + id);
          setGridModel(CustomerDAO.findGreaterAsId(myCustomers, id, from, to));
        }
      }
      else
      {
        setGridModel(CustomerDAO.getCustomers(myCustomers, from, to));
      }
    }

    setTotal((int) Math.ceil((double) getRecord() / (double) getRows()));

    session.put("mylist", myCustomers);

    return SUCCESS;
  }

  public String getJSON()
  {
    return execute();
  }

  /**
   * @return how many rows we want to have into the grid
   */
  public Integer getRows()
  {
    return rows;
  }

  /**
   * @param rows
   *          how many rows we want to have into the grid
   */
  public void setRows(Integer rows)
  {
    this.rows = rows;
  }

  /**
   * @return current page of the query
   */
  public Integer getPage()
  {
    return page;
  }

  /**
   * @param page
   *          current page of the query
   */
  public void setPage(Integer page)
  {
    this.page = page;
  }

  /**
   * @return total pages for the query
   */
  public Integer getTotal()
  {
    return total;
  }

  /**
   * @param total
   *          total pages for the query
   */
  public void setTotal(Integer total)
  {
    this.total = total;
  }

  /**
   * @return total number of records for the query. e.g. select count(*) from
   *         table
   */
  public Integer getRecord()
  {
    return record;
  }

  /**
   * @param record
   *          total number of records for the query. e.g. select count(*) from
   *          table
   */
  public void setRecord(Integer record)
  {

    this.record = record;

    if (this.record > 0 && this.rows > 0)
    {
      this.total = (int) Math.ceil((double) this.record / (double) this.rows);
    }
    else
    {
      this.total = 0;
    }
  }

  /**
   * @return an collection that contains the actual data
   */
  public List<Customer> getGridModel()
  {
    return gridModel;
  }

  /**
   * @param gridModel
   *          an collection that contains the actual data
   */
  public void setGridModel(List<Customer> gridModel)
  {
    this.gridModel = gridModel;
  }

  /**
   * @return sorting order
   */
  public String getSord()
  {
    return sord;
  }

  /**
   * @param sord
   *          sorting order
   */
  public void setSord(String sord)
  {
    this.sord = sord;
  }

  /**
   * @return get index row - i.e. user click to sort.
   */
  public String getSidx()
  {
    return sidx;
  }

  /**
   * @param sidx
   *          get index row - i.e. user click to sort.
   */
  public void setSidx(String sidx)
  {
    this.sidx = sidx;
  }

  public void setSearchField(String searchField)
  {
    this.searchField = searchField;
  }

  public void setSearchString(String searchString)
  {
    this.searchString = searchString;
  }

  public void setSearchOper(String searchOper)
  {
    this.searchOper = searchOper;
  }

  public void setLoadonce(boolean loadonce)
  {
    this.loadonce = loadonce;
  }

  public void setSession(Map<String, Object> session)
  {
    this.session = session;
  }

}

when the application store on the map ?