Identifies a callback method to be invoked before an 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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-05 UTC."],[[["The `PreDelete` interface designates a callback method to be executed before an Entity of specified kinds is deleted from the datastore."],["If no specific kinds are listed, the callback will be triggered for all kinds of Entities."],["Callback methods must return `void`, accept a `DeleteContext` argument, not be static, and belong to a class with a no-argument constructor, but the method and constructor don't have to be public."],["The `kinds()` method specifies the entity kinds for which the callback applies, defaulting to all kinds if an empty array is returned."],["Throwing an unchecked exception from the callback will stop the datastore operation from completing and prevent other callbacks from running."]]],[]]
