Examples of org.apache.wicket.session.pagemap.IPageMapEntry

Package org.apache.wicket.session.pagemap

Examples of org.apache.wicket.session.pagemap.IPageMapEntry

org.apache.wicket.session.pagemap.IPageMapEntry
Some source which produces a page. Page implements IPageMapEntry by simply returning "this", but other implementations are possible as well, allowing users to create IPageMapEntry implementations that reconstruct full blown Page objects from a limited set of data (for example, a details page from an id). The advantage of doing this is that you can save session memory (by trading off against the processing power required to reconstruct the page). @see org.apache.wicket.session.pagemap.AbstractPageMapEntry @author Jonathan Locke

    {
      if (set)
      {
        Page.serializer.set(new PageSerializer(null));
      }
      IPageMapEntry entry = (IPageMapEntry)Objects.byteArrayToObject(data);
      if (entry != null)
      {
        page = entry.getPage();
        if (versionNumber != -1)
        {
          page = page.getVersion(versionNumber);
        }
      }

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  {
    long size = Objects.sizeof(this);
    Iterator it = getEntries().iterator();
    while (it.hasNext())
    {
      IPageMapEntry entry = (IPageMapEntry)it.next();
      if (entry instanceof Page)
      {
        size += ((Page)entry).getSizeInBytes();
      }
      else

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    {
      if (set)
      {
        Page.serializer.set(new PageSerializer(null));
      }
      IPageMapEntry entry = (IPageMapEntry)Objects.byteArrayToObject(data);
      if (entry != null)
      {
        page = entry.getPage();
        if (versionNumber != -1)
        {
          page = page.getVersion(versionNumber);
        }
      }

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    {
      if (set)
      {
        Page.serializer.set(new PageSerializer(null));
      }
      IPageMapEntry entry = (IPageMapEntry)Objects.byteArrayToObject(bytes);
      if (entry != null)
      {
        page = entry.getPage();
        page = page.getVersion(versionNumber);
      }
    }
    finally
    {

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    {
      if (set)
      {
        Page.serializer.set(new PageSerializer(null));
      }
      IPageMapEntry entry = (IPageMapEntry)Objects.byteArrayToObject(data);
      if (entry != null)
      {
        page = entry.getPage();
        if (versionNumber != -1)
        {
          page = page.getVersion(versionNumber);
        }
      }

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   *            The version to get
   * @return Any page having the given id
   */
  public final Page get(final int id, int versionNumber)
  {
    final IPageMapEntry entry = (IPageMapEntry)getSession().getAttribute(attributeForId(id));
    if (entry != null)
    {
      // Get page as dirty
      Page page = entry.getPage();


      // TODO Performance: Is this really the case is a page always dirty
      // even if we just render it again? POSSIBLE ANSWER: The page could
      // mark itself as clean to prevent replication, but the reverse is
      // probably not desirable (pages marking themselves dirty manually)

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    // Page only goes into session if it is stateless
    if (!page.isPageStateless())
    {
      Session session = getSession();
      // Get page map entry from page
      final IPageMapEntry entry = page.getPageMapEntry();


      // Entry has been accessed
      pushAccess(entry);


      // Store entry in session
      final String attribute = attributeForId(entry.getNumericId());


      if (session.getAttribute(attribute) == null)
      {
        // Set attribute if it is a new page, so that it will exists
        // already for other threads that can come on the same time.

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        {
          // Pop unreachable access off top of stack
          final Access topAccess = popAccess();


          // Get entry for access
          final IPageMapEntry top = getEntry(topAccess.getId());


          // If it's a page we can remove version info
          if (top instanceof Page)
          {
            // If there's more than one version

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  {
    long size = Objects.sizeof(this);
    Iterator it = getEntries().iterator();
    while (it.hasNext())
    {
      IPageMapEntry entry = (IPageMapEntry)it.next();
      if (entry instanceof Page)
      {
        size += ((Page)entry).getSizeInBytes();
      }
      else

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  {
    long size = Objects.sizeof(this);
    Iterator<IPageMapEntry> it = getEntries().iterator();
    while (it.hasNext())
    {
      IPageMapEntry entry = it.next();
      if (entry instanceof Page)
      {
        size += ((Page)entry).getSizeInBytes();
      }
      else

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