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nhibernatequeryovernhibernate-projections
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Reputation: 1056

NHibernate: ProjectionList: Can we create dynamic projectionlist for Orderby

I am working on a query in NHibernate in which user could provide a sorting order for some selected fields. I need to do a OrderBy() in QueryOver with the names of field names in entities, but when using projection list I am getting like this.

SELECT
     this_.Number as y0_,
     scc3_.Code as y1_,

FROM sometable
WHERE 1=1 ORDER BY this_.Number as y0_,
 scc3_.Code as y1_ asc

The projection list for select columns is different from orderby projection list and I am not using .WithAlias()

sortProjectionList.Add(Projections.Property(() => stock.Number));
sortProjectionList.Add(Projections.Property(() => scc.Code));

How can I create a projectionlist without aliases or aliases with custom names?

Thanks

Upvotes: 1

Views: 536

Answers (1)

Radim Köhler
Radim Köhler

Reputation: 123901

I expect, that you experience an issue with generated keyword "AS" inside of the ORDER BY in case, that you pass projections like this:

// NHibernate will leave few AS, except the last
query.OrderBy(sortProjectionList).Asc();

To avoid that, we can do it like this:

// NHibernate will solve each projection separately
for (var index = 0; index < sortProjectionList.Length; index++)
{
    query.OrderBy(sortProjectionList[index]).Asc();
}

Upvotes: 1

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