Projection in nullable types produces a bad query
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Ivan Montilla
Nov 13, 2019, 5:42:26 AM11/13/19
to RavenDB - 2nd generation document database
Hi, I'm doing this projection;
Take attention in the three last properties, x.Birthdate is of type DateTime?, a nullable struct. That means, for accessing the DateTime object, I need to call x.BirthDate.Value or x.BirthDate? (these last syntax is not allowed into expression).
The problem is that in the generated query, in Date.parse is trying to access to x.BirthDate.Value that doesn't exists, so its returns NaN. If I remove `.Value` in the parameter of Date.parse, returns the expected result.
query.Select(x => new UpdateModel{ FirstName = x.FirstName, LastName = x.LastName, Email = x.Email, EmailConfirmed = x.EmailConfirmed, Document = x.Document.Value, DocumentType = x.Document.Type.ToString(), BirthDay = x.BirthDate != null ? x.BirthDate.Value.Day : (int?) null, BirthMonth = x.BirthDate != null ? x.BirthDate.Value.Month : (int?) null, BirthYear = x.BirthDate != null ? x.BirthDate.Value.Year : (int?) null})Take attention in the three last properties, x.Birthdate is of type DateTime?, a nullable struct. That means, for accessing the DateTime object, I need to call x.BirthDate.Value or x.BirthDate? (these last syntax is not allowed into expression).
from [...]
where [...]
select { FirstName : x.FirstName, LastName : x.LastName, Email : x.Email, EmailConfirmed : x.EmailConfirmed, Document : x.Document.Value, DocumentType : x.Document.Type.toString(), BirthDay : x.BirthDate!=null?new Date(Date.parse(x.BirthDate.Value)).getDate():null, BirthMonth : x.BirthDate!=null?new Date(Date.parse(x.BirthDate.Value)).getFullYear():null, BirthYear : x.BirthDate!=null?new Date(Date.parse(x.BirthDate.Value)).getMonth()+1:null}
limit [...]The problem is that in the generated query, in Date.parse is trying to access to x.BirthDate.Value that doesn't exists, so its returns NaN. If I remove `.Value` in the parameter of Date.parse, returns the expected result.
Ivan Montilla
Nov 13, 2019, 5:49:53 AM11/13/19
to RavenDB - 2nd generation document database
I found this issue in youtrack, but state is fixed in 4.0 and I'm using 4.2.3
Grisha Kotler
Nov 13, 2019, 9:12:06 AM11/13/19
to rav...@googlegroups.com
Hi,
The issue is fixed and will be available in the next build.
 | Grisha Kotler Team Leader / Hibernating Rhinos LTD
|
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Ivan Montilla
Nov 13, 2019, 9:17:32 AM11/13/19
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Grisha Kotler
Nov 13, 2019, 9:22:23 AM11/13/19
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Yes.
A workaround would be to use the RQL expression without the ".Value" (from session.Advanced.RawQuery).
| Grisha Kotler Team Leader / Hibernating Rhinos LTD
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Ivan Montilla
Nov 15, 2019, 4:41:54 AM11/15/19
to RavenDB - 2nd generation document database
Working as espected in 20191114 nightly.
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