CODEWITHSUNDEEP
javagoogle-app-enginegoogle-cloud-datastoreobjectify
Sathya
Sathya

Reputation: 1086

Objectify projection query using keys

How do I run a projection query using keys ? I would like to be able to select using a list of keys and then project on a property.

ofy().load().type(Entity.class).filterKey(" in ", keys).project("property1")

I got an error message saying: '__key_ _ in ' is not a legal filter condition

Also I tried to query by ids which also did not work.

// convert keys to ids
// ...
// ...

ofy().load.type(Entity.class).filter(" id in ", ids).project("property1");

I got an error message saying I cannot use id in filter.

I remember being able to do this using the low level datastore api. Please let me know if there is a way using objectify.

Regards,

Sathya

Upvotes: 1

Views: 940

Answers (1)

stickfigure
stickfigure

Reputation: 13556

Get rid of your extra spaces in filterKey(" in ", ...). It should be filterKey("in", ...).

It never occurred to me that anyone would try something that wacky. And apparently Java String.split() is pedantic about splitting for every instance of characters. Thank you for discovering this bug; the fix will be in the next version of Objectify (5.0.4).

In the mean time, stop doing dumb things with whitespace.

Upvotes: 1

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