fluent nhibernate linq query examples

 

 

 

 

C (CSharp) FluentNhibernate.Entities.Project Code Examples.var productsLinQ (from p in session.Query().Console.WriteLine("Retrieve all products which have Store name like HVN. Write by LinQ") Fluent NHibernate provides an API for configuring your database, this can be used in combination with the fluent configuration or on its own. Im going to show some of the various ways you can use this API. All of the following examples are best used when placed inside the Database call of the fluent Tag: c,linq,nhibernate,fluent-nhibernate. I have an asp.net-mvc website that uses Fluent Nhibernate Linq / SQL Server. I have a textbox where someone can enter a name and that generate the following query that I am using now to search my Person table Its just an query language that has a boat-load of syntac sugar to make it look SQL-ish. In the very basic of basic examples, NHibernate and LINQFluent NHibernate can generate your mapping files based on simple conventions. No XML-writing and strongly typed. Ive recently worked on a project Heres the simplest implementation of NHibernate Fluent NHibernate Linqvar sess SessionFactoryBuilder.GetSessionFactory().OpenSession() Action listProduct delegate . foreach(var p in sess. Query()) .

Fluent NHibernate provides a Fluent API also enables you to use LINQ to query data on top of the NHibernate engine. To work with the code examples given in this article, you should ensure that the following namespaces have been added to your class. Here is an example of how a query looks before and after rewritingRewritten query / from Post post in value(NHibernate.Linq.NhQueryable[Nerula.Data.

Post]) from Blog 0 in [post].Blog select new PostModel() . FLuent nHibernate Linq Query. I m facing issue to access the bridge table to get the values using nHibernate and LINQ. I have 4 table, ROLES , MODULES , PERMISSIONS and the RoleModulePermission(bridge). Fluent NHibernate CRUD C Example Complete Source Code. Summary. How to install Fluentusing System using System.Collections.Generic using System.Linq using System.Text usingstring hstmt creates the hibernate query language string that is equivalent to SQL SELECT Here is an overview of using LINQ to NHibernate and LINQ to Entities on the same database and their corresponding generated queries. Entity Framework. Figure 1 shows my LINQ to Entities query which selects a single row from the Blog table where the Id is 1 Fluent NHibernate Composite Keys. Summary In a previous blog post, I demonstrated a composite key on a table that was used as a reference between two other tables (a many-to-many example).How do I do the LINQ Query? Now this Linq query works. NHibernate knows how to handle Fee property in the query.Key says: April 3, 2012 at 7:00 pm. Can you add source example for Fluent NHibernate? Reply. SQL query in linq to sql, group by trouble. How to return an object (in this case a FileResult object) after a background job is completed.nHibernate Wrong parameter size in query for YesNoType. Fluent Nhibernate Mapping With NotFound.Ignore() Disables Lazy Loading and Fetches Data Multiple counts on single table in LINQ query. Securely storing (encrypting) data in an ASP.Net application.Solutions Collecting From Web of "Fluent Nhibernate Join query with group by". LINQ Fluent NHIBERNATE .Contains() does not work in QueryOver but works in Query? var categories session.QueryOver(). .WhereRestrictionOn(c > c.CategoryId).IsIn(ArrayofCategoryIds). I am using NHibernate 4 with the linq provider for all of my queries. Am I missing something in my linq query here? The work around I use at the moment is to hydrate the partids query with ToList and then use the list of ids from memory. IList cats query.GetExecutableQueryOver(session) .List() Queries can be built up to use restrictions, projections, and ordering using a fluent inline syntaxCheck NHibernate NHibernate.Linq.Functions namespace classess sources for more examples.

The loading of data is incredibly flexible and by default is lazy loaded. The easiest method of loading data would be getting the object by id, or using the criteria object in NHibernate or using linq queries as per the example below. Examples of this are Heres an example of what I have: public abstract class Car public abstract bool Runs() public class Junker : Car.Im having trouble ordering by more than one field in my Linq to NHibernate query.Fluent NHibernate or NHibernate, Which one should we prefer for linq support? In the DinnerRepository we are mainly going to use LINQ to NHibernate to replace the LINQ to SQL queriesYou should drop them and convert them to real NHibernate Query code (HQL, Criteria) to consider it a real Fluent NHibernate use case. NHibernates LINQ GroupBy capabilities. Recently in the project that is using NHibernate 3.2, I needed to use some aggregations in my database queries.SQL feature. LINQ syntax example. NHibernate 3.2.error handling (1) ES6 (1) Fluent NHibernate (21) HiLo (1) HTML (1) html5 (1) HTTP (2) ID Linq in Fluent NHibernate is just the same with NHibernate itself. because like other answer, Fluent NHibernate is just for config and make ease to use NHibernate, the rest is come from NHibernate. for example: var maleCustomers (from t in Session.Query (). Fluent NHibernate canceled the xml file.For example, in xml, we need to set for each string type fields are not allowed to be empty, the length is greater than 1000, int type had toIt is used to bind query parameters, limit the number of results returned by the query, and finally to execute the query. In this project, we are using the NHibernate.Linq assembly to create a NHibernateContext which has implemented a LINQ provider (not as good as LINQ to SQL) that allows us to create queries in aQuite a few of us mare souls can draw inspiration from embracing Fluent and Linq2NHibernate. Fluent Linq to Sql allows you to define mappings for Linq to Sql entities using a fluent interface rather than attributes or XML.A simple example: public class CustomerMapping : Mapping public CustomerMapping() . Fluent NHibernate conventions examples. Posted by Marcin Obel November 26, 2009. Fluent NHibernate is my favorite extension for NHibernate. I am using it since early betas and I have to say that I love it. And bonus points to supply both a LINQ example and a one using the NHibernate syntax. So the query would be like this: C.Fluent Nhibernate join on non foreign key property. Note, Query is an extension method in the NHibernate.Linq namespace.Note that if you want to mix Fetch with other clauses, Fetch must always come last. So for exampleIm not sure if its my fluent nhibernate mapping. But I have a customer with Conversations. Recommendc - Nhibernate/linq query is extremely slow.sql linq nhibernate fluent-nhibernate linq-to-nhibernate | this question edited Apr 22 11 at 21:51 asked Apr 22 11 at 19:43 chobo2 24.5k 130 359 625. Interoperable Fluent NHibernate NHibernate Linq To NHibernate. Problem with linq query. fluent nhibernate first level cache not working as expected. Nhibernate query for items that have a Dictionary Property containing value. NHibernate - QueryOver Queries. NHibernate - Native Sql. NHibernate - Fluent Hibernate. NHibernate Useful Resources.LINQ to Objects or LINQ to SQL, any of the other LINQ providers you might be familiar with. Lets have a look into a simple example in which we will retrieve the customer As far as I can tell or understand about what is happening here the Linq query shouldnt be executing an insert statement. Any ideas?Tutorial :Example for using Python Twisted with Fi LINQ is just a query technology/library with special syntax in C and LINQ and NHibernate are complementary technologies.I really like Fluent NHibernate, for example, but thats not to say that LINQ to SQL is limiting. I am using Fluent NHibernate for my ORM. In doing so I am trying to use the NHibernate LINQ syntax to fetch a set of data with the power of LINQ.select mem) query query.Where(where statement) They return the same type but the queries are over separate entities: IQueryable eventQuery1 session. Query().Where(e > e.EventType.Id eventTypeId) IQueryable eventQuery2 session. Query().Select(n > n.Event).Distinct()I tried 1: var query session.Query().Where(p > p.Price > 100)Thanks, Ricardo! Im in the process of transitioning from Criteria API to LINQ to NHibernate, and this little method has been very helpful. LINQ (2).Some quick searching led me to the Fluent NHibernate Getting Started page. (If you havent read it, do so now.) Combining that with what I have already learned in exploring SQLite in this blog, I soon had a code first database being generated. 3. Setup Fluent Nhibernate to Use LINQ.using NHibernate using NHibernate.Linq . [HttpPost] public ActionResult Edit(Post updatedPost) ISession session SQLiteUtil.SessionFactory.OpenSession() IQueryable postRepository session. Query(). Then you can use NHibernate facilities to make query for data layer Author: Mahsa You can either write a code as traditional sql query or LinqI am using NHibernate with Fluent on my SQL Server 2012 and Ive decided to In addition to Ricardos answer, heres an example of how the hbm2ddl.auto. Assuming your domain class is TRDISTAKENEVTVIEW int wocount session. Query().Select(x > x.wo).Distinct().Count() To use . Query() method you will have to use using NHibernate.Linq namespace on the top. Home Forums Frameworks Linq Linq [SOLVED]: NHibernate querying on a string collection using Linq results in either error or empty collection.I have a problem with selecting a string collection and have reproduced it with the following small example. For this example I am using the version 3.3 of NHibernate against a SQLite database to have some quick in memory tests.The problem of this query is that I will receive a nasty Cartesian product. Why? Well lets have a look at the SQL generated by this Linq using NHibernate profiler First I wanted to see where Linq to NHibernate was at after hearing about it years ago.Now the nice thing is that the first time you run any of the tests, it (Being Fluent NHibernate) will create that tables and columns needed.This is an example but not exactly production ready. Polymorphic queries with NHibernate Search. Lucene.net NHibernate search concurrency issues.I dont think using fluent nhibernate will be a problem but I cant seem to find any examples that uses linq with nhiberante search. In my examples Im useing Fluent NHibernate API but also XML counterpart are included. All examples are based on the following schema: (subset of AdventureWorks database).For FetchType.Join() NHibernate will call database once with following query And bonus points to supply both a LINQ example and a one using the NHibernate syntax. So the query would be like thisFluent NHibernate, multiple abstract base class inheritance not loading middle base class. Im trying to use Fluent-NHibernates Query method which looks like thisThis syntax is correct, but there is a problem with Fluents underlying use of Linq to Nhibernate that breaks when using VB lambda expressions.

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