Easy question

[Anthony Carlos]

I read the page on queries: http://db.apache.org/ojb/query.html#report

I noticed two kinds of queries. First, a QueryByCriteria:
Query q = QueryFactory.newQuery(Person.class, crit);
And second, a ReportQueryByCriteria:
ReportQueryByCriteria q = 
QueryFactory.newReportQuery(ProductGroup.class, crit);

What's the difference between the two? After looking at 60+ messages in 
the mail archive, I'm guessing that it's the fact that the 
ReportQueryByCriteria allows the creation of summary/aggregate columns 
such as max(), min(), avg(), ...

Am I right?

Also, shouldn't the example for ReportQueryByCriteria declare q as:

ReportQuery q = QueryFactory.newReportQuery(ProductGroup.class, crit); 
// Use the ReportQuery interface instead of the ReportQueryByCriteria 
class

Thanks for the help!

-Anthony

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