@Target(value=METHOD)
@Retention(value=RUNTIME)
public @interface PreDelete
Entity
of any
of the specified kinds is deleted from the datastore. If
kinds()
is not provided the callback will execute for all kinds. Methods with this
annotation must return
void
, must accept a single argument of type
DeleteContext
, must not throw any checked exceptions, must not be
static, and must belong to a class with a no-arg constructor. Neither the
method nor the no-arg constructor of the class to which it belongs are
required to be public. Methods with this annotation are free to throw any
unchecked exception they like. Throwing an unchecked exception will prevent
callbacks that have not yet been executed from running, and the exception
will propagate to the code that invoked the datastore operation that
resulted in the invocation of the callback. Throwing an unchecked exception
from a callback will prevent the datastore operation from executing.
Modifier and Type | Optional Element and Description |
---|---|
java.lang.String[]
|
kinds
The kinds to which this callback applies.
|