[Mondrian] Mondrian Scenario Support

Julian Hyde jhyde at pentaho.com
Mon Oct 4 13:01:08 EDT 2010

The writeback change will be reflected in all queries that use the same
scenario. It depends on the UI whether different users are able to use the
same scenario.
There may be some thread safety issues if two queries are using the same
scenario, and one modifies a cell while the other is executing. I haven't
tested that case thoroughly, because I thought the situation wouldn't arise
with most UIs. But look out for it, anyway.


From: Tom Barber [mailto:tom at wamonline.org.uk] 
Sent: Sunday, October 03, 2010 4:27 AM
To: jhyde at pentaho.com
Cc: 'Mondrian developer mailing list'
Subject: Re: [Mondrian] Mondrian Scenario Support

Thanks for the patch Julian, that seems to have sorted it. 

Just to clarify one point wrt to Scenario support. If you make a change,
because its at cache level, is it mirrored across all queries active using
that cube?

So if I had open Olap4j query X,Y and Z, if they all used Sales and in query
X I changed a cell value, this would also have to be reflected in Y and Z?



On 1 Oct 2010, at 22:27, Julian Hyde wrote:

I think the problem is a null cell value. I am going to look at it some


From: mondrian-bounces at pentaho.org [mailto:mondrian-bounces at pentaho.org] On
Behalf Of tom at wamonline.org.uk
Sent: Thursday, September 30, 2010 3:26 PM
To: mondrian at pentaho.org
Subject: [Mondrian] Mondrian Scenario Support

Hi guys,

Tried again with Mondrian and scenarios today, but slightly more complex
queries keep getting upset, so I filed a jira. I'll delve more if I get time
over the weekend.



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