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From "Weddle, Anthony" <Anthony.Wed...@bluescopesteel.com>
Subject RE: General queries
Date Mon, 13 Apr 2009 22:00:32 GMT
I've reduced the data map to just what was necessary to replicate the
problem and have opened a new Jira issue, CAY-1208. I wasn't sure about
the severity, so left it as major. If I hit these problem during
production development, they would be show-stoppers, but I'm only
evaluating.

Cheers,
Tony

-----Original Message-----
From: Andrus Adamchik [mailto:andrus@objectstyle.org] 
Sent: Monday, 13 April 2009 10:19 p.m.
To: user@cayenne.apache.org
Subject: Re: General queries


> However, I wondered if it could cope with the first subselect and so
> ended up with this EJBQL query (accounting for different relationship
> names in Cayenne):
>
> select iosbu.toIosb.toIos, sum(iosbu.curQty)
>  from Iosbu as iosbu, Ios as ios
>  where iosbu.toIosb.toIosbs.id = 'A'
>    and (iosbu.toIosb.useByDt is null
>    or iosbu.toIosb.useByDt > CURRENT_DATE)
>  group by iosbu.toIosb.toIos
...
> SELECT t1.PART_CODE, SUM(t0.CUR_QTY) AS sc0 FROM IOSBU t0, INNER JOIN
> IOSB t1 ON (t0.IOSB_ID = t1.IOSB_ID) INNER JOIN IOSBS t3 ON
> (t1.IOSB_STAT = t3.IOSB_STAT) IOS t2 WHERE t3.IOSB_STAT = ? AND
> t1.USE_BY_DT IS NULL OR t1.USE_BY_DT > {fn CURDATE()} GROUP BY
> t1.PART_CODE
>
> Notice the "IOS t2" without a preceeding comma.

Looks like a bug. Care to open a Jira with this example?


> As I didn't need to specify Ios in the from clause, I took it out.  
> Then
> I got another problem. Note that selecting the relationship (ending in
> "toIos") results in Cayenne selecting the key for that related table
> (I'm assuming that Cayenne would subsequently use the key to retrieve
> the whole object) but it gets the type wrong. The key is a String but
> Cayenne seems to think it's a Long and tries to retrieve a Long from  
> the
> result set, which fails.

I guess I can comment on why this happened if you provide a sample  
DataMap that includes mapping of all these relationships. I won't  
exclude a possibility of a bug. So maybe you can attach a (subset of)  
DataMap to the Jira above and mention this problem as well.

Thanks,
Andrus







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