Hi list,
my task is to fetch and process a large amount of objects. Reading the
documentation my best choice
seemed to do a dataContext.performIteratedQuery(query). The problem is that I
get a Java Heap Space
error, on executing this statement. Now it seems to me the problem is that
Hi Simon, some questions:
1) How many records are you talking about?
2) Are you updating your object with a flag/etc you can query on again
later (to exclude objects you've already processed)?
3) What version of Cayenne are you using and what database?
4) When you convert your Map (from the
I'm not really sure what your question is. Cayenne will fetch all of the
fields that are modeled and turn them into objects. And you can add
prefetching paths to your SelectQuery to pre-fetch the related objects,
otherwise they will be loaded when accessed. If you want to write your own
SQL and
On 13/12/12 12:18am, Simon Schneider wrote:
Hi list,
my task is to fetch and process a large amount of objects. Reading the
documentation my best choice
seemed to do a dataContext.performIteratedQuery(query). The problem is that I
get a Java Heap Space
error, on executing this statement. Now
Hi John,
Thanks for the reply.
For the below query, can you provide a sample using SQLTemplate?
1. how to use the SQLTemplate to execute the below query?
SELECT um.ID,
um.FIRST_NAME,
um.LAST_NAME,
ua.ROLE_ID,
tt.TASK_ASSIGNED_DATE,
tt.TASK_CLOSED_DATE,
If you really want to use Cayenne for the power it gives you, rather than
writing SQL, I recommend you work your way through the tutorials. Yes, you can
use SQLTemplate. No, that's probably not what you want to do here.
At its heart, your query is just um.ID = 112. Start by making that work in
