Query object implementation examples

Question

Can anyone recommend good tutorial, implementation or sample code on Query object pattern usage, in C#(Java...)?

I haven't found much with google.

score 4 · Answer 1 · answered Feb 15 '10 at 10:38

4

With LINQ being almost everywhere, are you sure you need to reimplement the Query Object?

Basically, you can treat all classes from System.Linq.Expressions to be a good implementation of a Query Object pattern.

answered Feb 15 '10 at 10:38

Anton Gogolev

I tend to agree with this. Can anyone give me a reason why not to use LINQ instead of an implementation of the Query Object Pattern? – Ozzy Aug 15 '11 at 16:49
2

@Ozzy maybe because it isnt supported by his database provider?? – GorillaApe Oct 27 '12 at 10:30
1

over WCF (if you are stuck with a non supporting binding) – Chris McKelt Feb 12 '15 at 09:21

score 3 · Answer 2 · answered Oct 27 '10 at 08:38

3

From Chad Myers:

answered Oct 27 '10 at 08:38

*Part 2:* http://www.lostechies.com/blogs/chad_myers/archive/2008/08/02/query-objects-with-repository-pattern-part-2.aspx – Ahmet Recep Navruz Oct 27 '10 at 08:38

score 1 · Answer 3 · answered Jul 08 '10 at 13:46

1

I suggest Martin Fowler's Query Object Pattern (http://martinfowler.com/eaaCatalog/queryObject.html). Get his book "Patterns of Enterprise Application Architecture", you'll find sample implementation there.

answered Jul 08 '10 at 13:46

Buhake Sindi

score 0 · Answer 4 · answered Aug 13 '15 at 19:06

0

I wrote a nice query object library for NHibernate. Check it out here: https://github.com/shaynevanasperen/NHibernate.Sessions.Operations

answered Aug 13 '15 at 19:06

Shayne

4 Answers4