Is it possible to make "Entity SQL"-like queries against DataObjects model?
It is required to allow our end-users write their own custom queries to data storage.
[Add] Direct SQL query not suitable in my case because I need to manage stuff like user permissions at ORM-level but not at database level.

asked Dec 09 '10 at 05:38

vecs's gravatar image

vecs
5112

edited Jan 04 '11 at 16:03

Sergey's gravatar image

Sergey
123339


One Answer:

Hello,

Unfortunately, "Entity SQL" approach is not supported, but there is a good alternative: try using Dynamic LINQ library to build LINQ queries from user-written query strings, I suppose it will help.

answered Dec 09 '10 at 10:05

Dmitri%20Maximov's gravatar image

Dmitri Maximov
22111211

AFAIK, Dynamic LINQ allows to define only expressions inside .Where, .OrderBy, .Select, etc., but author needs to evaluate the whole LINQ query.

The easiest way to implement this is to use CSharpCodeProvider to compile the query dynamically at runtime.

(Dec 09 '10 at 12:54) Alex Yakunin Alex%20Yakunin's gravatar image

Thank you. Most likely this is only way in my case.. Main imperfection of this approach is that CodeDomProvider compiler seems doesn`t available under Silverlight.

(Dec 10 '10 at 08:34) vecs vecs's gravatar image
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Asked: Dec 09 '10 at 05:38

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Last updated: Jan 04 '11 at 16:03

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