Question

I have existing entity in datastore. I can find it Admin Console by attribute query e.g.:

SELECT * FROM UserEntry where email = '[e-mail]'

and also query it by encoded key string, e.g.:

SELECT * FROM UserEntry where __key__ = KEY('cy1hcHByIAsSCVVzZXJFbnRyeM')

However, when I query the entity by unencoded key, it is not found:

SELECT * where __key__ = KEY('UserEntry','[e-mail]')

From former queries I can verify that the key is correct and the same query works for other entities of the same type.

I experience the same behavior when I try to access the entity via JDO API:

pm.getObjectById(UserEntry.class, "[e-mail]");

This code results in following exception:

javax.jdo.JDOObjectNotFoundException: Could not retrieve entity of kind UserEntry with key UserEntry("[e-mail]")

How did this happen? How can I resolve this issue and avoid it in the future?

Answer 1

Off-line we discovered that the urlsafe key string encodes for a username with a space added, as if it encoded KEY('UserEntry','[e-mail] '). That seems an input validation bug in the program.