[Mondrian] DimensionUsage and captions

Paul Stoellberger p.stoellberger at gmail.com
Wed Feb 13 19:50:54 EST 2013

Ok I guess I was a bit too quick.

Using the caption attribute will actually cause some more errors: 

01:29:55,794 ERROR [RolapCube] RolapCube.lookupChild: In cube "Sales" use of unaliased Dimension name "[Store]" rather than the alias name "StoreUsage" 
mondrian.olap.MondrianException: Mondrian Error:RolapCube.lookupChild: In cube "Sales" use of unaliased Dimension name "[Store]" rather than the alias name "StoreUsage" 
	at mondrian.rolap.RolapCube.lookupChild(RolapCube.java:2657)

There are a few JIRAs about it:

http://jira.pentaho.com/browse/MONDRIAN-399 - suggests it works and then there are new rules in place (cant find such rules in the code)
http://jira.pentaho.com/browse/MONDRIAN-646 - actually filed by me 3.5 years ago

Whats your take on this?
I think the used dimension caption should just use the name attribute and therefore have the same method as a normal dimension.
Julian, you suggested a few different ways how this should be handled in those JIRAs.. if you can point me in the right direction I'm happy to send a pull request


On Feb 14, 2013, at 1:27 AM, Paul Stoellberger wrote:

> Hi,
> I was just trying to fix an issue a number of people were complaining about in mondrian.
> When using DimensionUsage it doesn't apply the expected caption, which would be the name of the DimensionUsage in this case.
> I didn't know you could set the caption attribute in DimensionUsage as well
>  <DimensionUsage name="StoreUsage" caption="StoreUsage" source="Store" foreignKey="store_id"/>
> This works just fine.
> However, like most people I would expect the caption of a DimensionUsage to be the name of the Usage and not the underlying Dimension.
> This is due to the constructor of RolapCubeDimension (the description part seems a bit odd.. checking cubeDim.caption != null instead of description)
> Do you agree that the DimensionUsage caption should be the name in case it is not set explicitly?
> -Paul

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