Question

I’m using GAE in Java, I have a data table “Person” and I need doing something like:

SELECT * FROM PERSON WHERE NAME="MIKE" OR AGE=50

My code builds “AND”, I don’t know how to build the sentence with OR

Query query = new Query(getEntityKind(), getRootEntityKey());
query.addFilter("name", FilterOperator.EQUAL, "Mike");
query.addFilter("age", FilterOperator.EQUAL, 50);

Any ideas?

Thanks!

Answer 1

There is no OR operator in GAE queries. The only way is to run two queries and then merge results.

Update: since 1.7.0, GAE supports OR queries via CompositeFilterOperator. What it does is basically run parallel queries and then AND/OR them on server. The cost is the same as running separate queries and merging them on client, but one saves on roundtrip times.