问题
Can anyone recommend good tutorial, implementation or sample code on Query object pattern usage, in C#(Java...)?
I haven't found much with google.
回答1:
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.
回答2:
From Chad Myers:
Part 1: http://www.lostechies.com/blogs/chad_myers/archive/2008/08/01/query-objects-with-the-repository-pattern.aspx
回答3:
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.
回答4:
I wrote a nice query object library for NHibernate. Check it out here: https://github.com/shaynevanasperen/NHibernate.Sessions.Operations
来源：https://stackoverflow.com/questions/2265290/query-object-implementation-examples