queryover

How can I select a column within a dictionary value with nhibernate?

由 纵然是瞬间 提交于 2019-12-07 19:41:39
问题 I have structure similar to this: public class Entity { public int Id { get; set; } public IDictionary<string, EntityLocale> Locales { get; set; } } public class EntityLocale { public string Name { get; set; } } public class EntityMap : ClassMap<Entity> { public EntityMap() { HasMany(x => x.Locales) .AsMap<string>("Locale") .Component( c => { c.Map(x => x.Name); } ); } } And I want to recieve all names of product locales with a "en" key. With linq it will be: var names = Session.QueryOver

NHibernate (+ FluentNhibernate) : Join two detached tables

由 百般思念 提交于 2019-12-07 17:56:54
问题 'tI encounter problems to create a join on two entities with a common property but they are not map together. Say you have an entity Article which contains a property FamilyCode and an entity Family with properties Code and Label. In my mappings, Article doesn't reference Family and i don't want to change that (to keep compatibility with others internal and legacy methods). So, i can't translate the below query in Nhibernate : SELECT f.Code, f.Label FROM Article a INNER JOIN Family f ON a

How to get List of Parent Entities with Child Count In Nhibernate QueryOver

由 烈酒焚心 提交于 2019-12-07 11:38:35
问题 I have two classes : public class Parent { public int Id { get; set; } public string Name { get; set; } public ICollection<Child> Childrens { get; set; } } public class Child { public int Id { get; set; } public string Name { get; set; } } Now through Nhibernate QueryOver I want to get list of all Parent with no of Count of children in single query. Expected output is ?: ParentId Name ChildrenCount 1 ABC 10 2 CDE 5 can anyone help me . 回答1: Using this DTO for projection: public class

Join multiple tables with NHibernate and QueryOver

由 自作多情 提交于 2019-12-07 09:22:40
问题 I have this tables: Person -> PersonFavorites, PersonCompany PersonCompany -> Company I have now to do the following select with NHibernate and QueryOver: select * from Person inner join PersonFavorites on Person.Id = PersonFavorites.PersonId inner join PersonCompany on Person.Id = PersonCompany.PersonId inner join Company on Company.Id = PersonCompany.CompanyId where ... Can someone give me a sample, how I can do that? - My Problem is, that I have to join multiple Tables Person ->

NHibernate QueryOver<> - Aggregate function over SubQuery

由 不羁的心 提交于 2019-12-07 03:55:29
问题 How can I write the following SQL statement using QueryOver<> syntax? SELECT COUNT(*) FROM ( SELECT FirstName,LastName FROM People GROUP BY FirstName, LastName ) as sub_t I have the inner query working so far: var q = _session.QueryOver<Person>() .SelectList(l => l .SelectGroup(x => x.FirstName) .SelectGroup(x => x.LastName)); But I have no idea how to wrap this in a subquery and get a row count out of it. Can it be done? Unfortunately my RDBMS dialect (MsSqlCe40Dialect) does not support

How to use Full Text Search for any property with QueryOver API

由 我是研究僧i 提交于 2019-12-07 03:09:51
问题 I'm trying to use the SQL function CONSTAINS to filter some data on QueryOver API. The main issue is i can't use SqlFunction in where clause, it does not compile, because a ICriterion is needed. var result = Session.QueryOver<Individual>() .Where(Projections.SqlFunction( "FullTextContains", NHibernateUtil.Boolean, Projections.Property<Individual>(x => x.LastName), Projections.Constant("something"))) .List(); I tried to match it to a TRUE constant, but when the query is executed it generates

Nhibernate Group By and Alias To Bean

由 别等时光非礼了梦想. 提交于 2019-12-06 18:59:26
I have been struggling to get an old query translated to Nhibernate. We are upgrading an old project from Nhibernate 2 to the latest version. I am using the QueryOver syntax since Linq wasn't an option because of the complexity of the queries (advice of a colleague). I want to query the DB (Oracle) to get some results which have to be grouped. As result I need a grouped collection of my DTO. I also noticed that nhibernate has trouble translating to a DTO with complex properties (nested DTO's) To fix this I found this topic. This works great but I am not a fan of the magic strings... I will add

Queryover dynamic fetch with joins

由 半世苍凉 提交于 2019-12-06 12:07:01
iam trying a new query with nhibernate and find a new problem :( take this as model: public class D { int id; } public class C { int id; } public class B { int id; ICollection<C> Cs; ICollection<D> Ds; } public class A { int id; ICollection<B> Bs; } i want A object that have a particular B object and dinamically eager fetch Cs or Ds collection of selected B: public virtual A Read(int idB, params Expression<Func<Attivita, object>>[] eagerFields) i start with IEnumerable<A> query = _session.QueryOver<A>() .JoinQueryOver(a => a.Bs) .Where(b => b.Id == idB) .Future<A>(); foreach (Expression<Func<A

Fluent Nhibernate Composite Key Not Generating Joins For Referenced Entities

由 懵懂的女人 提交于 2019-12-06 11:18:15
问题 I have a mapping with a composite key as below: CompositeId() .KeyReference(x => x.CreatedBy, "member_key") .KeyReference(x => x.Box, "box_key"); This works fine for simple gets and inserts, however it is not generating joins with the tables mentioned in the reference where I try and use them as part of a query. So this: return _sessionFactory.GetCurrentSession().QueryOver<BoxMember>() .Where(x => x.Box.Id == boxId) .Where(x => x.Member.DeletedDate == null) .Fetch(x => x.Box).Eager .Fetch(x =

Subqueries with QueryOver

由 不打扰是莪最后的温柔 提交于 2019-12-06 10:34:31
I have a issue in using subquery with queryover. This is what I have var address = QueryOver.Of<Address>() .Where(x => x.City.IsLike("%" + city + "%")).Select(x => x.Person.Id); var result = Session.QueryOver<Person>() .Where(x => x.Type.IsLike(type + "%")) .And(x => x.Name.IsLike("%" + name + "%")) .WithSubquery.WhereExists(address); I have a table for Person and a person has multiple addreses. So Person id, name, type and Address will have PersonId and city etc. So want to search a person by name and type as well as City which is in Address table Keith.Abramo Try something like this: Address
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