Hi all,
I was wondering what is the best way to update totals in a multi-user
environment. For example, let's say we have an Order which can have one or
more Packages associated and we want to maintain a total package count on
the Order entity. How would you update this value when the user has
Hi Mark,
Is there a performance reason why you don't just do a count on the
packages that match the order?
mrg
On Thu, Oct 30, 2014 at 11:00 AM, Mark Stobbe markstobb...@gmail.com wrote:
Hi all,
I was wondering what is the best way to update totals in a multi-user
environment. For example,
Should be fixed on master per https://issues.apache.org/jira/browse/CAY-1964
If you were successful compiling Cayenne, appreciate if you could assemble the
latest code and confirm the fix.
Andrus
On Oct 30, 2014, at 9:46 AM, Andrus Adamchik and...@objectstyle.org wrote:
I just spotted a
Hi Michael,
I would like to display the count in a table for a whole bunch of orders.
In theory I could use a group by-query to get the numbers I need and with
proper configured indices this should be fairly quick, I guess.
Is there a more transparent way of doing things, e.g. using lifecycle
Oh, I also have the same problem with total cost with different
currencies...
On Thu, Oct 30, 2014 at 5:09 PM, Mark Stobbe markstobb...@gmail.com wrote:
Hi Michael,
I would like to display the count in a table for a whole bunch of orders.
In theory I could use a group by-query to get the
Is there a more transparent way of doing things, e.g. using lifecycle
listeners, datachannel filters and such?
If you want the update to happen on commit, you can use a
PostPersist/PostRemove listener on Package. And perhaps update the count with
raw SQL to avoid a race condition between
Hi Mark,
In general I don't like storing data that is easily calculated from
the DB itself. (Although I've made exceptions when it was
computationally expensive and impractical to do the calculation.)
Some options you could try:
* Fetch a fresh order and then: order.getPackages().size().
*
Awesome, I had discovered both of these bugs last night...but hadn't
tackled trying to fix them. Glad someone better equipped to do it jumped
in. :)
I've confirmed it's working...thanks for the quick response!
-Lon
On Thu, Oct 30, 2014 at 8:32 AM, Andrus Adamchik and...@objectstyle.org
wrote:
On the ObjEntity screen pressing Sync button (the one with the two arrows
will create any missing ObjAttributes from DbAttributes. But primary key /
foreign key fields have to be added to the ObjEntity manually. You could
uncheck the pk box and then sync, then check it again, but that's probably
Hi Mark,
Here is the code I mentioned if you want to try it (again, 3.0.2 --
might need tweaked for 3.1):
Actual utility code:
https://github.com/mrg/cbe/blob/master/FetchingObjects/Aggregates/src/main/java/cbe/fetching/utilities/AggregateUtils.java
We are really discouraging meaning PKs, Lon. :-)
John's advice is as good as it gets, I think.
mrg
On Thu, Oct 30, 2014 at 8:35 PM, Lon Varscsak lon.varsc...@gmail.com wrote:
Hey guys...I think I'm using up all of my question credits quickly. :P
Is there a quick way to tell the modeler
With cayenne 3.1, as I can get the connection to the database to pass it to
jasperreports?
René
Hi René,
yes you can access a connection
e.g.
public static Connection getConnection() throws Exception {
return
((DataContext)getObjectContext()).getParentDataDomain().getDefaultNode().getDataSource().getConnection();
}
2014-10-31 3:30 GMT+01:00 René Aravena rene.arav...@gmail.com:
For many projects you'll put the database connection details into JNDI and have
Cayenne and anything else get it from there. Of course you might like to give
Jasper a read-only connection.
Alternatively we wrote a layer which has Jasper access the data model through
Cayenne. A bit of work, but
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