PostLoadContext (Google App Engine API for Java)

com.google.appengine.api.datastore

Class PostLoadContext

  • java.lang.Object
    • com.google.appengine.api.datastore.PostLoadContext
  • All Implemented Interfaces:
    CallbackContext<Entity>

    public final class PostLoadContext
extends java.lang.Object
    Concrete CallbackContext implementation that is specific to intercepted operations that load Entities, currently get and "query". It is important to note that when a PostLoadContext is provided to a callback following a get operation, getElements() returns all retrieved Entities. However, when a PostLoadContext is provided to a callback following a query, a separate PostLoadContext will be constructed for each Entity in the result set so getElements() will only return a List containing a single Entity. This is due to the streaming nature of query responses.

    • Method Detail

      • getElements

        public java.util.List<T> getElements()
        Specified by:
        getElements in interface CallbackContext<T>
        Returns:
        An unmodifiable view of the elements involved in the operation that triggered the callback..

      • getCurrentElement

        public T getCurrentElement()
        Specified by:
        getCurrentElement in interface CallbackContext<T>
        Returns:
        The element for which the callback has been invoked. Shortcut for getElements().getCurrentIndex().

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object