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Asked: 2026-05-10T20:49:54+00:00

I have a database that contains a table that looks a bit like this:

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I have a database that contains a table that looks a bit like this:

PropertyId, EntityId, Value

PropertyId and EntityId are a combined primary key. Every Entity is spread over a couple of rows where every row contains a single property of the entity. I have no control over this database so I’ll have to work with it.

Is it possible to use NHibernate to map entities from this table to single objects? I only have to read from this table, this might make things a bit easier. Or would I be better off just using DataReaders and do the mapping myself?

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  1. Not quite done that, but you could use a custom SQL query to define your entities (distinct entityid, plus any entity level attributes), see here .

    Although I can see you might want the property/values mapped to attributes of the entity object. Which might mean further queries to populate them by hand – which may mean your data reader route is best.

    If your happy for them to be a collection of the entity then that should be no problem.

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