Package dev.restate.sdk

Interface SharedObjectContext

All Superinterfaces:
Context
All Known Subinterfaces:
ObjectContext, SharedWorkflowContext, WorkflowContext
public interface SharedObjectContext extends Context
This interface can be used only within shared handlers of virtual objects. It extends Context adding access to the virtual object instance key-value state storage.

NOTE: This interface MUST NOT be accessed concurrently since it can lead to different orderings of user actions, corrupting the execution of the invocation.

See Also:

  • Method Details

    • key

      String key()
      Returns:
      the key of this object

    • get

      <T> Optional<T> get(StateKey<T> key)
      Gets the state stored under key, deserializing the raw value using the Serde in the StateKey.
      Parameters:
      key - identifying the state to get and its type.
      Returns:
      an Optional containing the stored state deserialized or an empty Optional if not set yet.
      Throws:
      RuntimeException - when the state cannot be deserialized.

    • stateKeys

      Collection<String> stateKeys()
      Gets all the known state keys for this virtual object instance.
      Returns:
      the immutable collection of known state keys.