Class ApplicationStateManagerImpl

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      <T> boolean exists​(java.lang.Class<T> ssoClass)
      Returns true if the SSO already exists, false if it has not yet been created.
      <T> T get​(java.lang.Class<T> ssoClass)
      For a given class, find the SSO for the class, creating it if necessary.
      <T> T getIfExists​(java.lang.Class<T> ssoClass)
      For a given class, find the SSO for the class.
      <T> void set​(java.lang.Class<T> ssoClass, T sso)
      Stores a new SSO, replacing the existing SSO (if any).
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Method Detail

      • get

        public <T> T get​(java.lang.Class<T> ssoClass)
        Description copied from interface: ApplicationStateManager
        For a given class, find the SSO for the class, creating it if necessary. The manager has a configuration that determines how an instance is stored and created as needed. The default (when there is no configuration for a SSO type) is to instantiate the object with injected dependencies, via ObjectLocator.autobuild(Class). This allows an SSO to keep references to Tapestry IoC services or other objects that can be injected.
        Specified by:
        get in interface ApplicationStateManager
        Parameters:
        ssoClass - identifies the SSO to access or create
        Returns:
        the SSO instance
      • getIfExists

        public <T> T getIfExists​(java.lang.Class<T> ssoClass)
        Description copied from interface: ApplicationStateManager
        For a given class, find the SSO for the class. The manager has a configuration that determines how an instance is stored.
        Specified by:
        getIfExists in interface ApplicationStateManager
        Parameters:
        ssoClass - identifies the SSO to access or create
        Returns:
        the SSO instance or null if it does not already exist
      • set

        public <T> void set​(java.lang.Class<T> ssoClass,
                            T sso)
        Description copied from interface: ApplicationStateManager
        Stores a new SSO, replacing the existing SSO (if any). Storing the value null will delete the SSO so that it may be re-created later.
        Specified by:
        set in interface ApplicationStateManager
        Parameters:
        ssoClass - the type of SSO
        sso - the SSO instance
      • exists

        public <T> boolean exists​(java.lang.Class<T> ssoClass)
        Description copied from interface: ApplicationStateManager
        Returns true if the SSO already exists, false if it has not yet been created.
        Specified by:
        exists in interface ApplicationStateManager
        Parameters:
        ssoClass - used to select the SSO
        Returns:
        true if SSO exists, false if null