CODEWITHSUNDEEP
javagoogle-app-enginegoogle-cloud-datastorekey
aloo
aloo

Reputation: 5389

How to query java appengine datastore VIEWER for entity using a Long id

I'm trying to do something relatively straightforward and something I think I used to be able to do.

I'm trying to use the admin interface to query my datastore using a long id. The entity in question is defined as:

@PersistenceCapable(identityType = IdentityType.APPLICATION, detachable = "true")
public class Notification
{   
    @PrimaryKey
    @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
    private Long notificationId = null;
}

In the datastore viewer in the appengine admin interface, I perform the following gql query:

SELECT * FROM Notification WHERE _key_ = KEY('Notification', 12345)
SELECT * FROM Notification WHERE id = KEY('Notification', 12345)
SELECT * FROM Notification WHERE notificationId = KEY('Notification', 12345)
SELECT * FROM Notification WHERE notificationId = 12345

None of these queries return any results nor do they produce any errors. I am sure the entity exists. OIne of these used to work I just can't remember which. Could this be due to the recent appengine update to 1.3.6?

Upvotes: 3

Views: 1384

Answers (1)

Nick Johnson
Nick Johnson

Reputation: 101149

You need this:

SELECT * FROM Notification WHERE __key__ = KEY('Notification', 12345)

Note two underscores around key, not one.

Upvotes: 4

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