I just thought of a better way of doing it, but it's not quite as pretty
because it breaks queries. Basically you add a new field to your entity
which could be an integer (like a version number for the entity) or a
boolean for "has had ten added to mycolumn" which defaults to false when
you load yo
If you need to do it all at once there's no secret trick or magic to do it.
You can use backends servers, cron jobs, task queues o the appengine-mapper
but in all cases you'll have to pay number_of_entities*(get_price +
put_price) plus all the processing price.
On Mon, Jan 23, 2012 at 1:39 PM, Mat
Unfortunately that's basically the only option.
Maybe someone can comment on MapReduce, although from what I understand
it's not any cheaper.
On 23 January 2012 15:33, kt wrote:
> Hi,
> I have a situation where I need to update a property in several entities
> amass. Something similar in SQL wo
Hi,
I have a situation where I need to update a property in several entities
amass. Something similar in SQL would be :
update mytable set mycolumn = (mycolumn + 10);
I do not want to iterate through all entities since it will be very
expensive. Any ideas?
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