Package com.googlecode.objectify.cmd

Interface DeferredDeleter

  • public interface DeferredDeleter

    Element in the command chain for deferred deleting entities from the datastore. Note that all methods return void; there is no way to force synchronous execution.

    You can delete entities by either passing in the POJO or their keys. Note that deletes do NOT cascade; you must delete each individual entity in an object graph.

    The type() method allows you to construct keys fluently.

    Note that all command objects are immutable.

    Author:
    Jeff Schnitzer

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      void entities​(Iterable<?> entities)
      Defer deletion of specific entities.
      void entities​(Object... entities)
      Convenient substitute for entities(Iterable)
      void entity​(Object entity)
      Defer deletion of a specific entity.
      void key​(Key<?> key)
      Defer deletion of a specific entity.
      void keys​(Key<?>... keys)
      Convenient substitute for keys(Iterable)
      void keys​(Iterable<? extends Key<?>> keys)
      Defer deletion of specific entities.
      DeferredDeleteType type​(Class<?> type)
      Begin construction of a key or keys to delete by specifying a kind.

    • Method Detail

      • type

        DeferredDeleteType type​(Class<?> type)
        Begin construction of a key or keys to delete by specifying a kind.

        All command objects are immutable; this method returns a new object instead of modifying the current command object.

        Parameters:
        type - is the kind of object to delete.
        Returns:
        the next step in the immutable command chain where you specify a parent and/or ids.

      • key

        void key​(Key<?> key)

        Defer deletion of a specific entity.

        Parameters:
        key - defines which entity to delete

      • keys

        void keys​(Iterable<? extends Key<?>> keys)

        Defer deletion of specific entities.

        Parameters:
        keys - defines which entities to delete

      • keys

        void keys​(Key<?>... keys)
        Convenient substitute for keys(Iterable)

      • entity

        void entity​(Object entity)

        Defer deletion of a specific entity.

        Parameters:
        entity - can be an entity or any key-like structure; a Key, a native datastore Key, or an entity object with valid id/parent fields.

      • entities

        void entities​(Iterable<?> entities)

        Defer deletion of specific entities.

        Parameters:
        entities - can be entity instances or any key-like structure; a Key, a native datastore Key, or an entity object with valid id/parent fields.

      • entities

        void entities​(Object... entities)
        Convenient substitute for entities(Iterable)