Examples of com.vaadin.data.Container

com.vaadin.data.Container
A specialized set of identified Items. Basically the Container is a set of {@link Item}s, but it imposes certain constraints on its contents. These constraints state the following:
- All Items in the Container must have the same number of Properties.
- All Items in the Container must have the same Property ID's (see {@link Item#getItemPropertyIds()}).
- All Properties in the Items corresponding to the same Property ID must have the same data type.
- All Items within a container are uniquely identified by their non-null IDs.
The Container can be visualized as a representation of a relational database table. Each Item in the Container represents a row in the table, and all cells in a column (identified by a Property ID) have the same data type. Note that as with the cells in a database table, no Property in a Container may be empty, though they may contain null values.

Note that though uniquely identified, the Items in a Container are not necessarily {@link Container.Ordered ordered} or {@link Container.Indexed indexed}.

Containers can derive Item ID's from the item properties or use other, container specific or user specified identifiers.

If a container is {@link Filterable filtered} or {@link Sortable sorted}, most of the the methods of the container interface and its subinterfaces (container size, {@link #containsId(Object)}, iteration and indices etc.) relate to the filtered and sorted view, not to the full container contents. See individual method javadoc for exceptions to this (adding and removing items).

The Container interface is split to several subinterfaces so that a class can implement only the ones it needs.
@author Vaadin Ltd @since 3.0

     *      boolean[])
     * 
     */
    public void sort(Object[] propertyId, boolean[] ascending)
            throws UnsupportedOperationException {
        final Container c = getContainerDataSource();
        if (c instanceof Container.Sortable) {
            final int pageIndex = getCurrentPageFirstItemIndex();
            boolean refreshingPreviouslyEnabled = disableContentRefreshing();
            ((Container.Sortable) c).sort(propertyId, ascending);
            setCurrentPageFirstItemIndex(pageIndex);

View Full Code Here

     * Gets the container property IDs, which can be used to sort the item.
     * 
     * @see com.vaadin.data.Container.Sortable#getSortableContainerPropertyIds()
     */
    public Collection<?> getSortableContainerPropertyIds() {
        final Container c = getContainerDataSource();
        if (c instanceof Container.Sortable && !isSortDisabled()) {
            return ((Container.Sortable) c).getSortableContainerPropertyIds();
        } else {
            return new LinkedList<Object>();
        }

View Full Code Here

     *            the Collection containing the options.
     */
    public AbstractSelect(String caption, Collection<?> options) {


        // Creates the options container and add given options to it
        final Container c = new IndexedContainer();
        if (options != null) {
            for (final Iterator<?> i = options.iterator(); i.hasNext();) {
                c.addItem(i.next());
            }
        }


        setCaption(caption);
        setContainerDataSource(c);

View Full Code Here

     * @param needNullSelectOption
     * @return filtered list of options (may be empty) or null if cannot use
     *         container filters
     */
    protected List<?> getOptionsWithFilter(boolean needNullSelectOption) {
        Container container = getContainerDataSource();


        if (pageLength == 0) {
            // no paging: return all items
            filteredSize = container.size();
            return new ArrayList<Object>(container.getItemIds());
        }


        if (!(container instanceof Filterable)
                || !(container instanceof Indexed)
                || getItemCaptionMode() != ITEM_CAPTION_MODE_PROPERTY) {
            return null;
        }


        Filterable filterable = (Filterable) container;


        Filter filter = buildFilter(filterstring, filteringMode);


        // adding and removing filters leads to extraneous item set
        // change events from the underlying container, but the ComboBox does
        // not process or propagate them based on the flag filteringContainer
        if (filter != null) {
            filterable.addContainerFilter(filter);
        }


        Indexed indexed = (Indexed) container;


        int indexToEnsureInView = -1;


        // if not an option request (item list when user changes page), go
        // to page with the selected item after filtering if accepted by
        // filter
        Object selection = getValue();
        if (isScrollToSelectedItem() && !optionRequest && !isMultiSelect()
                && selection != null) {
            // ensure proper page
            indexToEnsureInView = indexed.indexOfId(selection);
        }


        filteredSize = container.size();
        currentPage = adjustCurrentPage(currentPage, needNullSelectOption,
                indexToEnsureInView, filteredSize);
        int first = getFirstItemIndexOnCurrentPage(needNullSelectOption,
                filteredSize);
        int last = getLastItemIndexOnCurrentPage(needNullSelectOption,

View Full Code Here

     *      boolean[])
     * 
     */
    public void sort(Object[] propertyId, boolean[] ascending)
            throws UnsupportedOperationException {
        final Container c = getContainerDataSource();
        if (c instanceof Container.Sortable) {
            final int pageIndex = getCurrentPageFirstItemIndex();
            ((Container.Sortable) c).sort(propertyId, ascending);
            setCurrentPageFirstItemIndex(pageIndex);
            resetPageBuffer();

View Full Code Here

     * Gets the container property IDs, which can be used to sort the item.
     * 
     * @see com.vaadin.data.Container.Sortable#getSortableContainerPropertyIds()
     */
    public Collection<?> getSortableContainerPropertyIds() {
        final Container c = getContainerDataSource();
        if (c instanceof Container.Sortable && !isSortDisabled()) {
            return ((Container.Sortable) c).getSortableContainerPropertyIds();
        } else {
            return new LinkedList<Object>();
        }

View Full Code Here

     * @param needNullSelectOption
     * @return filtered list of options (may be empty) or null if cannot use
     *         container filters
     */
    protected List<?> getOptionsWithFilter(boolean needNullSelectOption) {
        Container container = getContainerDataSource();


        if (pageLength == 0) {
            // no paging: return all items
            filteredSize = container.size();
            return new ArrayList<Object>(container.getItemIds());
        }


        if (!(container instanceof Filterable)
                || !(container instanceof Indexed)
                || getItemCaptionMode() != ITEM_CAPTION_MODE_PROPERTY) {
            return null;
        }


        Filterable filterable = (Filterable) container;


        Filter filter = buildFilter(filterstring, filteringMode);


        // adding and removing filters leads to extraneous item set
        // change events from the underlying container, but the ComboBox does
        // not process or propagate them based on the flag filteringContainer
        if (filter != null) {
            filteringContainer = true;
            filterable.addContainerFilter(filter);
        }


        Indexed indexed = (Indexed) container;


        int indexToEnsureInView = -1;


        // if not an option request (item list when user changes page), go
        // to page with the selected item after filtering if accepted by
        // filter
        Object selection = getValue();
        if (isScrollToSelectedItem() && !optionRequest && !isMultiSelect()
                && selection != null) {
            // ensure proper page
            indexToEnsureInView = indexed.indexOfId(selection);
        }


        filteredSize = container.size();
        currentPage = adjustCurrentPage(currentPage, needNullSelectOption,
                indexToEnsureInView, filteredSize);
        int first = getFirstItemIndexOnCurrentPage(needNullSelectOption,
                filteredSize);
        int last = getLastItemIndexOnCurrentPage(needNullSelectOption,

View Full Code Here

     *            the Collection containing the options.
     */
    public AbstractSelect(String caption, Collection<?> options) {


        // Creates the options container and add given options to it
        final Container c = new IndexedContainer();
        if (options != null) {
            for (final Iterator<?> i = options.iterator(); i.hasNext();) {
                c.addItem(i.next());
            }
        }


        setCaption(caption);
        setContainerDataSource(c);

View Full Code Here

     *            the Collection containing the options.
     */
    public AbstractSelect(String caption, Collection options) {


        // Creates the options container and add given options to it
        final Container c = new IndexedContainer();
        if (options != null) {
            for (final Iterator i = options.iterator(); i.hasNext();) {
                c.addItem(i.next());
            }
        }


        setCaption(caption);
        setContainerDataSource(c);

View Full Code Here

      return null;
    }
  }


  private void refreshReservations() {
    final Container reservations = db.getReservations(resourcePanel
        .getSelectedResources());
    reservedFrom.setContainerDataSource(reservations);
    reservedTo.setContainerDataSource(reservations);
    final Container allReservations = db.getReservations(null);
    allTable.setContainerDataSource(allReservations);
    if (allReservations != null && allReservations.size() > 0) {
      allTable.setVisibleColumns(new Object[] {
          ReservationsDB.Reservation.PROPERTY_ID_RESERVED_FROM,
          ReservationsDB.Reservation.PROPERTY_ID_RESERVED_TO,
          ReservationsDB.Resource.PROPERTY_ID_NAME,
          ReservationsDB.Resource.PROPERTY_ID_DESCRIPTION,

View Full Code Here

0 1 2 3 4 5

TOP

Related Classes of com.vaadin.data.Container

com.vaadin.addon.charts.model.gsonhelpers.ContainerDataSeriesSerializer

com.vaadin.tests.components.combobox.ComboBoxTabWhenFilter

com.vaadin.tests.components.table.TableExtraScrollbars

com.vaadin.tests.components.table.UpdateTableWhenUnfocused

com.vaadin.tests.components.tree.TreeDragAndDropFromTable

com.vaadin.tests.dd.DDTest2

com.vaadin.tests.dd.TreeDragStart

com.vaadin.tests.TestSizeableIncomponents$Testable

com.vaadin.tests.themes.valo.Trees

com.vaadin.tests.tickets.Ticket161

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.