icriteria

My application creates a dynamically generated query at runtime based on user input by creating Criterion objects e.g: ICriterion criterion = Restrictions.Eq("Name", "John"); ...... detachedCriteriaSomewhereElse.Add(criterion); How do I do this in NHLambdaExtensions? what I really need to do is ICriterion criterion = Restrictions.Eq<Person>(p=> p.Name == "John"); but this isn't valid. Is there any way to do this? With the NHLambdaExtensions you have the SQLExpression class that lets you do the following: ICriterion criterion = SqlExpression.CriterionFor<Person>(p => p.Name == "John"); 来源：

Anyone know how to convert an ICriteria into a DetachedCriteria. I need to use an existing ICriteria as part of a subquery using: .Add(Subqueries.PropertyIn("Name", myDetachedCriteriaSubquery)) Is there any way to convert an ICriteria to a DetachedCriteria. I will accept 'no' with a credible reference. Following on from mattk's answer, you can inherit DetachedCriteria to access its constructors: public class ConvertedDetachedCriteria : DetachedCriteria { public ConvertedDetachedCriteria(ICriteria criteria) : base((CriteriaImpl) criteria, criteria) { var impl = (CriteriaImpl) criteria; impl

I have a criteria query that I am using to show pages of results. I also need to obtain the total count of all items. Rather than have two queries, one for paging the results and one for the count (since they are identical apart from the .AddOrder() public ICriteria StandardQuery { get { return NHibernateSesssionManager.GetSession.CreateCriteria<Person>.AddOrder("OrderProperty", Order.Desc); } public ICriteria CountQuery { get{ return StandardQuery.SetProjection(Projections.Count("ID")); } Obviously the CountQuery barfs with "Column "dbo.Person.ordercolumn" is invalid in the ORDER BY clause

I'm using NHibernate to query my database with the criteria API. My criteria is below: ICriteria c = Session.CreateCriteria(typeof(Transaction)); ProjectionList projections = Projections.ProjectionList(); projections.Add(Projections.Sum("Units"), "Units"); projections.Add(Projections.GroupProperty("Account"), "Account"); projections.Add(Projections.GroupProperty("Security"), "Security"); c.SetProjection(projections); This is working fine, but what I would like is a way to be able to limit the query to only return when the "Units" property is > 0. In SQL I would simply us a Having Units > 0

I've got a Criteria Query for a social networking site. A Person object has a collection of Friends (also person objects). The query grabs the first N friends, but I also want to eager load an associated object MainProfileImage and then a subsequent associated object MediumThumbnail. I can do this in HQL easily: select friends from Person person inner join person.Friends friends inner join fetch friends.MainProfileImage image inner join fetch image.MediumThumbnail where person = :person1 order by friends.LatestLogin desc Here's My Criteria effort. For some reason this doesn't return anything!

hi i am new in NHibernate and i am a little confused. Suppose we have a product table. Let the product table have 2 columns price1 and price2. then i may query mapped product entities via HQL as follows: string queryString = @"from product p where p.price1 = p.price2 + 100 "; IList result = session.CreateQuery(queryString).List(); How can i achieve that via ICriteria API. i know it's absurd but i am trying sth like that: session.CreateCriteria(typeof(product)) .Add(Expression.Eq("price1", "price2" + 100)) .List() or more appropriately sth like that (using lambda extensions): session

I am using NHibernate, and am trying to figure out how to write a query, that searchs all the names of my entities, and lists the results. As a simple example, I have the following objects; public class Cat { public string name {get; set;} } public class Dog { public string name {get; set;} } public class Owner { public string firstname {get; set;} public string lastname {get; set;} } Eventaully I want to create a query , say for example, which and returns all the pet owners with an name containing "ted", OR pets with a name containing "ted". Here is an example of the SQL I want to execute: