Package org.apache.wicket.pageStore

Class InSessionPageStore

java.lang.Object
org.apache.wicket.pageStore.InSessionPageStore
All Implemented Interfaces:
IPageStore
public class InSessionPageStore extends Object implements IPageStore
A store keeping a configurable maximum of pages in the session.

Note: see getKey() for using more than once instance in an application

  • Constructor Details

    • InSessionPageStore

      public InSessionPageStore(int maxPages)
      Keep maxPages persistent in each session.

      Any page added to this store not being a SerializedPage will be dropped on serialization of the session.

      Parameters:
      maxPages - maximum pages to keep in session

    • InSessionPageStore

      public InSessionPageStore(Bytes maxBytes)
      Keep page up to maxBytes persistent in each session.

      All pages added to this store must be SerializedPages. You can achieve this by letting a SerializingPageStore delegate to this store.

      Parameters:
      maxBytes - maximum bytes to keep in session

    • InSessionPageStore

      public InSessionPageStore(int maxPages, ISerializer serializer)
      Keep a cache of maxPages in each session.

      If the container serializes sessions to disk, any non-SerializedPage added to this store will be automatically serialized.

      Parameters:
      maxPages - maximum pages to keep in session
      serializer - optional serializer used only in case session serialization

  • Method Details

    • getPage

      public IManageablePage getPage(IPageContext context, int id)
      Description copied from interface: IPageStore
      Restores a page from storage.
      Specified by:
      getPage in interface IPageStore
      Parameters:
      context - the context of the page
      id - the id of the page.
      Returns:
      the page

    • addPage

      public void addPage(IPageContext context, IManageablePage page)
      Description copied from interface: IPageStore
      Stores the page-
      Specified by:
      addPage in interface IPageStore
      Parameters:
      context - the context of the page
      page - the page.

    • removePage

      public void removePage(IPageContext context, IManageablePage page)
      Description copied from interface: IPageStore
      Removes a page from storage.
      Specified by:
      removePage in interface IPageStore
      Parameters:
      context - the context of the page
      page - the page.

    • removeAllPages

      public void removeAllPages(IPageContext context)
      Description copied from interface: IPageStore
      All pages should be removed from storage for the given context.
      Specified by:
      removeAllPages in interface IPageStore
      Parameters:
      context - the context of the pages

    • getKey

      protected MetaDataKey<InSessionPageStore.SessionData> getKey()
      Session data is stored under a MetaDataKey.

      In the unlikely case that an application utilizes more than one instance of this store, this method has to be overridden to provide a separate key for each instance.

    • supportsVersioning

      public boolean supportsVersioning()
      Description copied from interface: IPageStore
      Is versioning of pages supported, i.e. when an altered page instance has been stored in this store, can the previous state of that page still be retrieved under its former page id. Most implementations achieve this by keeping a copy of the page instance, e.g. by means of serialization.
      Specified by:
      supportsVersioning in interface IPageStore