Option 2 looks nice.
Than you Ikai.
From: "Ikai Lan (Google)"
Reply-To:
Date: Mon, 1 Nov 2010 15:28:54 -0700
To:
Subject: Re: [appengine-java] Mapreduce, mutationPool, and child entities
You've got a few options here:
1. Use named keys. You can then use KeyFactory and Key
You've got a few options here:
1. Use named keys. You can then use KeyFactory and KeyFactory.Builder to
create an entire Key hierarchy.
2. Use KeyRange to generate a range of IDs you can use, and use this as the
key of the parent entity
http://code.google.com/appengine/docs/java/javadoc/com/google
I am trying to figure out how to put 2 parent/child entities into the
mutationPool, inside a MapReduce job.
Here is my issue : in my understanding, as the mutationPool is asynchronous
, I cannot expect to get the parent entity key back from the
mutationPool.put() method.
Or can I ?
According to yo
