Interface ApplicationStatePersistenceStrategy

All Known Implementing Classes:
EntityApplicationStatePersistenceStrategy, EntityApplicationStatePersistenceStrategy, SessionApplicationStatePersistenceStrategy

Used by ApplicationStateManager to manage a specific kind of Session State Object (SSO) persistence. The strategy is responsible for managing SSO instances within its domain.

NOTE: The term "Application" here is a hold-over from Tapestry 5.0, which used the @ApplicationState (deprecated and deleted) annotation, and called them "ASOs" (Application State Objects). This service would be better named "SessionStatePersistenceStrategy" (but renaming it would cause backwards compatibility issues).

See Also:
  • Method Summary

    Modifier and Type
    Method
    Description
    <T> boolean
    exists(Class<T> ssoClass)
    Returns true if the SSO already exists, false if null.
    <T> T
    get(Class<T> ssoClass, ApplicationStateCreator<T> creator)
    Gets the SSO from the domain.
    default <T> T
    getIfExists(Class<T> ssoClass)
    Returns the SSO if it exists or null.
    <T> void
    set(Class<T> ssoClass, T sso)
    Stores a new SSO, possibly replacing the existing one.
  • Method Details

    • get

      <T> T get(Class<T> ssoClass, ApplicationStateCreator<T> creator)
      Gets the SSO from the domain. If the SSO does not already exist, it is created and stored, then returned.
    • set

      <T> void set(Class<T> ssoClass, T sso)
      Stores a new SSO, possibly replacing the existing one.
      Type Parameters:
      T -
      Parameters:
      ssoClass -
      sso - instance to store, or null to delete existing
    • exists

      <T> boolean exists(Class<T> ssoClass)
      Returns true if the SSO already exists, false if null.
    • getIfExists

      default <T> T getIfExists(Class<T> ssoClass)
      Returns the SSO if it exists or null.