Package org.springframework.web.context.request

Class SessionScope

java.lang.Object
org.springframework.web.context.request.AbstractRequestAttributesScope
org.springframework.web.context.request.SessionScope
All Implemented Interfaces:
Scope
public class SessionScope extends AbstractRequestAttributesScope
Session-backed Scope implementation.

Relies on a thread-bound RequestAttributes instance, which can be exported through RequestContextListener, RequestContextFilter or DispatcherServlet.

Since:
2.0
Author:
Rod Johnson, Juergen Hoeller, Rob Harrop
See Also:

  • Constructor Details

    • SessionScope

      public SessionScope()

  • Method Details

    • getScope

      protected int getScope()
      Description copied from class: AbstractRequestAttributesScope
      Template method that determines the actual target scope.
      Specified by:
      getScope in class AbstractRequestAttributesScope
      Returns:
      the target scope, in the form of an appropriate RequestAttributes constant
      See Also:

    • getConversationId

      public String getConversationId()
      Description copied from interface: Scope
      Return the conversation ID for the current underlying scope, if any.

      The exact meaning of the conversation ID depends on the underlying storage mechanism. In the case of session-scoped objects, the conversation ID would typically be equal to (or derived from) the session ID; in the case of a custom conversation that sits within the overall session, the specific ID for the current conversation would be appropriate.

      Note: This is an optional operation. It is perfectly valid to return null in an implementation of this method if the underlying storage mechanism has no obvious candidate for such an ID.

      Returns:
      the conversation ID, or null if there is no conversation ID for the current scope

    • get

      public Object get(String name, ObjectFactory<?> objectFactory)
      Description copied from interface: Scope
      Return the object with the given name from the underlying scope, creating it if not found in the underlying storage mechanism.

      This is the central operation of a Scope, and the only operation that is absolutely required.

      Specified by:
      get in interface Scope
      Overrides:
      get in class AbstractRequestAttributesScope
      Parameters:
      name - the name of the object to retrieve
      objectFactory - the ObjectFactory to use to create the scoped object if it is not present in the underlying storage mechanism
      Returns:
      the desired object (never null)

    • remove

      @Nullable public Object remove(String name)
      Description copied from interface: Scope
      Remove the object with the given name from the underlying scope.

      Returns null if no object was found; otherwise returns the removed Object.

      Note that an implementation should also remove a registered destruction callback for the specified object, if any. It does, however, not need to execute a registered destruction callback in this case, since the object will be destroyed by the caller (if appropriate).

      Note: This is an optional operation. Implementations may throw UnsupportedOperationException if they do not support explicitly removing an object.

      Specified by:
      remove in interface Scope
      Overrides:
      remove in class AbstractRequestAttributesScope
      Parameters:
      name - the name of the object to remove
      Returns:
      the removed object, or null if no object was present
      See Also: