How to use “static data” properly with (Fluent) NHibernate
c#,design-patterns,nhibernate,fluent-nhibernate
I agree with you that an enum would be the better choice. Here is an example of how you could implement this: 1.Create the enum: public enum CardClassId { ClassA = 1, ClassB = 2, ClassC = 3, ... } 2.Change the type of the ClassId property from int to...
NHibernate HQL Inner Join (SQL Server,Visual C#)
c#,sql-server,nhibernate,fluent-nhibernate,hql
The point here is CROSS JOIN if there are no mapped relations, JOIN on existing (mapped) relations. So, in case, there is no mapped relation Question to Answer - we still can query it like this: // instead of INNER JOIN we use 'comma' to produce CROSS JOIN // instead...
(Fluent) NHibernate initialize IUserType using Ninject?
Cfg.Environment.BytecodeProvider.ObjectsFactory is responsible for creating objects used by NHibernate. You can implement IBytecodeProvider to inject your own for example: class MyBytecodeProvider : NHibernate.Bytecode.Lightweight.BytecodeProviderImpl, IObjectsFactory { public override IObjectsFactory ObjectsFactory { get { return this; } } #region IObjectsFactory implementation public object CreateInstance(System.Type type) { // TODO: } public object CreateInstance(System.Type...
Updating composite primary keys through NHibernate
vb.net,nhibernate,fluent-nhibernate
An update on this: Having not found a way of updating the composite primary key through NHibernate, I decided to look at adding a new one and deleting the existing one. Although at first I had issues with this, I followed the advice of the answer to this question, specifically...
Outer right join doesn't work in NHibernate
mysql,nhibernate,orm,fluent-nhibernate,hql
I made a stored procedure in de MySQL database DELIMITER // create procedure getTrending (IN $getClimbers bool, IN $fromDate DateTime, IN $nrOfTrending int) Begin if ($getClimbers) then select p.id, p.active, p.title, p.comments, sum(case when r.isUpvote = b'1' and r.date > $fromDate then 1 else 0 END) - sum(case when r.isUpvote=b'0'...
NHibernate When to Use lazy loading? [closed]
c#,nhibernate,fluent-nhibernate,lazy-loading
I would put it this way: Lazy loading is the essence of ORM. It is the principle of ORM. (unless we want to load complete DB in one shot) Check this article by Ayende: NHibernate is lazy, just live with it small cite from that source: ...There is a good...
NHibernate: deleted object would be re-saved by cascade. Replace object and remove old one
c#,nhibernate,fluent-nhibernate,nhibernate-mapping
I tried explain what is happening in detail here NHibernate Deleted object would be re-saved by cascade Delete an item from many-to-many relationship I would say, that the point is here: the ProgramItem is referenced by some other collection. And that collection was also loaded into the session. The best...
Remove Proxy Classes Generated During Mapping in Fluent Nhibernate
nhibernate,fluent-nhibernate,lazy-loading,nhibernate-mapping,fluent-nhibernate-mapping
Just call: session.GetSessionImplementation().PersistenceContext.Unproxy(entity)...
Bi-directional relationship in nhibernate 4.0
c#,nhibernate,fluent-nhibernate,nhibernate-mapping,fluent-nhibernate-mapping
I found the fix for the problem: The fix for the problem is to add Inverse to the mapping of the parent file. So, the mapping for Department will be: DepartmentMap : ClassMap<Department> { Table("...."); HasMany(x => x.Employees).KeyColumn("DeptId").Inverse().Not.KeyNullable(); } ...
FluentNHibernate HiLo - can be maxLo read from table and not to be hardwired in code?
c#,.net,nhibernate,fluent-nhibernate,nhibernate-configuration
I wish to have the answer, but mine is: no. We have to pass this values as a setting. The reason is the way how is the table hi-lo generator implemented. Check the TableHiLoGenerator code .Configure() /// <summary> /// Configures the TableHiLoGenerator by reading the value of <c>table</c>, /// <c>column</c>,...
Fluent NHibernate mapping exception (no persister error)
Make sure that your entity and mapping classes are public. Properties for your entities i.e. database fields should be public virtual. Also try specifying the assembly of a mapping class instead of using GetExecutingAssembly(), I do vaguely recall experiencing trouble with it when I tried setting up FNH for the...
NHibernate QueryOver with IUserType fails
c#,nhibernate,fluent-nhibernate,queryover,iusertype
A quick (possibly not ideal) solution: var specialTypeToCompare = new SpecialType("1", "some_description"); var results = session.QueryOver<Person>() .Where(x => x.SpecialType.Code == specialTypeToCompare).List(); This is probably not ideal though, since you have to fill some fake value in for the description. NHibernate should generate the correct SQL though. Another solution that's a...
NHibernate fluent mapping to an entity property
asp.net-mvc-4,nhibernate,fluent-nhibernate,nhibernate-mapping,fluent-nhibernate-mapping
You can use component mapping: Component(x => StoreAddress).ColumnPrefix("StoreAddress"); Component(x => OfficeAddress).ColumnPrefix("OfficeAddress"); Then create a component map for Address type: public class AddressMap : ComponentMap<Address> { public AddressMap() { //map properterties } } ...
Fluent NHibernate creating entities - why virtual
Properties need to be virtual for nhibernate so that they can be substituted with proxies (required for lazy-loading) You don't have to do that.However, it is a good practice to initialize collections in the constructor so that you don't get null suddenly in the code. For example , consider...
How to cascade insert a parent, child, and list of combinations in Fluent-NHibernate
c#,sqlite,nhibernate,fluent-nhibernate
I noticed that you are naming your columns (ParentKeyColumn and ChildKeyColumn). If you just name you table and call Inverse() or Cascade.All(), it will work as you want, due to the fact that fluent nhibernate will create both columns and manage by itself. On your ProjectMap, you can do this:...
Fluent hHibernate One-To-Many set value in blank
c#,nhibernate,fluent-nhibernate,nancy
You are right, conversion from ID into Entity (Applicaton) will require call to data layer and its operation GetById(). session.Load<Application>(id) In cases, that we can be sure, that the passed Application ID exists, NHibernate has a dedicated way how to convert ID into its ENTITY. It is a Load() method,...
How can i set a Column in a CompositeId mapping with NHibernate
c#,visual-studio-2013,fluent-nhibernate,mapping,firebird
I found how do this. In CompositeId have one parameter for add a table reference. public class MapProduction : ClassMap<Production> { public MapProduction() { CompositeId() .KeyProperty(c => c.ProductionCode, "P_PRO") .KeyProperty(c => c.Cycle, "C_CIC") .KeyProperty(c => c.Crop, "C_CUL") .KeyProperty(c => c.TechnologyLevel, "C_NVT"); Map(c => c.Area).Column("A_ARE"); Map(c => c.Productivity).Column("P_ARE"); Map(c => c.syncStatus).ReadOnly();...
Mapping entity oneToMany with fluent nhibernate
c#,nhibernate,fluent-nhibernate,nhibernate-mapping,fluent-nhibernate-mapping
After all, with these SQL scripts (adjust for SQL Server in my case) CREATE TABLE CLIENTE ( CORE_ID int NOT NULL, CORE_NUMERO_MEDIDOR VARCHAR(50) ) CREATE TABLE MEDIDOR ( NUMERO_MEDIDOR VARCHAR(50), MARCA_MEDIDOR VARCHAR(50) ) With these entities (all properties are virtual) public class Cliente { public virtual int ClienteId { get;...
NHibernate - How to QueryOver in joined table with restrictions
c#,join,nhibernate,fluent-nhibernate,nhibernate-queryover
In your case, the only problem is, that you do not provide Expression inside of the .Where(), so this should do the job: // instead of this // .Where(clientTechnology.Client == client) //this doesn't compile // use this .Where(() => clientTechnology.Client == client) But I would go even farther. We should...
NHibernate - How to work around the parameter count limitation in SQL Server
c#,sql-server,nhibernate,fluent-nhibernate
Well, after having a look at NHibernate source code I was able to find a solution that works and is not particularly ugly. The key thought is to generate SQL 'IN' expression without using parameters. The first thing to do is make an ICriterion class for this expression. This should...
Fluent nHibernate - how to select DISTINCT dates without time?
The distinct requirement makes this a bit more complicated, but NHibernate already has various date/time methods registered for use in Criteria and QueryOver queries. This is slightly different than the SQL you asked for, but the results should be the same: var distinctDates = session.QueryOver<MyTable>() .Select(Projections.Distinct( Projections.SqlFunction("date", NHibernateUtil.Date, Projections.Property<MyTable>(mt =>...
NHibernate How do i put data in many to many mapping
c#,nhibernate,fluent-nhibernate
I'm not sure what exactly you are asking here, but I'll try to answer what I think you are asking. In order to map a many-to-many relationship to the database with Fluent NHibernate for the classes in your question would be as simple as public class ActorMap : ClassMap<Actor> {...
Lookup Table, using AND in Lookup to get one result back
sql,nhibernate,fluent-nhibernate
This is a basic set-within-sets question. I like to solve these using group by and having, because that is the most flexible solution. From what I can see table1 is not actually needed for this: select t2.Table1Id from table2 t2 join table3 t3 on t2.Table3ID = t3.Id group by t2.table1Id...
Fluent NHibernate HasManyToMany with a discriminator column specifying relationship type
c#,nhibernate,fluent-nhibernate,nhibernate-mapping,fluent-nhibernate-mapping
I would say, exactly as you pointed out in your comment: I actually do have the RelationTable mapped with 2 many-to-one references to Person (as PersonA and PersonB). Using one-to-many (HasMany), how then do you suggest I map Sons and Daughters (both List<Person>) in the Person class taking into account...
Search in Fluent-NHibernate using session.QueryOver<> return empty
c#,fluent-nhibernate,fluent-nhibernate-mapping
On first sight, I actually noticed two possible problems with your code. First: Have you tried to profile your generated SQL? With a profler tool like NHProf. Edit: Another option for logging could be, if you extend the FluentConfiguration setup by adding: .Diagnostics(d => d.Enable(true)) .Diagnostics(d => d.OutputToConsole()) Where as...
NHibernate: Select one to Many Left Join - Take X latest from Parent
nhibernate,fluent-nhibernate,left-join,queryover
The way I would go here is: load the list of root entity (Parent) and let NHibernate load their children lazily - in separated SQL query. To avoid 1 + N issue, we can use smart mapping feature: 19.1.5. Using batch fetching NHibernate can make efficient use of batch fetching,...
How to map a string collection from another table in Fluent NHibernate?
fluent-nhibernate,nhibernate-mapping,fluent-nhibernate-mapping
I think you might need to specify the KeyColumn. I do something similar in one of my solutions and I would map the entities above as follows... mapping.HasMany(x => x.Bars) .Schema("Schema") .Table("FooBars") .Element("Bar") .KeyColumn("FooID") .ForeignKeyConstraintName("FK_FooBar_Foo") .Not.Inverse() .Cascade.All() .Fetch.Select(); This will give a table called Schema.FooBars. It will have a FooID...
Trouble transitioning from Entity Framework query to NHibernate
c#,mysql,asp.net-mvc-4,nhibernate,fluent-nhibernate
I was attempting to join foo and bar on fooid, but bar had its own primary key foobarid. Once I turned on logging for NHibernate, I could see the generated query was incorrect. It was generating: SELECT fb.* FROM foo f INNER JOIN bar b ON f.fooid = b.foobarid INNER...
Query over Max with function
c#,nhibernate,fluent-nhibernate,nhibernate-queryover
You're close: session.QueryOver<PersonEntity>() .Select( Projections.Max( Projections.SqlFunction( new SQLFunctionTemplate( NHibernateUtil.String, "split_part(?1, ?2, ?3)"), NHibernateUtil.String, Projections.Property<PersonEntity>(p => p.Name), Projections.Constant("-"), Projections.Constant(2)))) .SingleOrDefault<int>(); You could also clean this up a bit by registering the function in your own dialect (I'm assuming you're using PostgreSQL: public class CustomPostgresDialect : PostgreSQLDialect { public...
Fluent nHibernate with Automapping: How to get a parent or “containg” object from a child
c#,fluent-nhibernate,fluent-nhibernate-mapping
in the object model der is no difference between manual mapping and automapping public class Box { public virtual Guid Id { get; set; } public virtual IList<Item> Contents { get; protected set; } public Box() { Contents = new List<Item>(); } public void Add(Item item) { item.Parent = this;...
Fluent nHibernate PropertyRef is eagerly fetching referenced records. Can I disable it?
c#,nhibernate,fluent-nhibernate
There is a workaround. But only becuase your many-to-one is readonly (and we do not have to care about insert/udpate issues later). How? By introducing a virtual entity e.g. PanelView // Readonly mapping, virtual class // which ID role is playing column panel_CODE public PanelViewMapping() { Table("panel-table"); Id(x => x.Code)...
Fluent Nhibernate mapping to different columns by condition
c#,nhibernate,fluent-nhibernate,firebird
NHibernate could help us to map Tables into C# objects / entities (ORM). That means: we should properly map ALL table's columns into ALL C# entity properties. Later (e.g. business layer or inside of the get and set) we should apply some validation rules to achieve required behaviour. Also we...
NHibernate error accessing Informix database - System error occurred in network function
hibernate,nhibernate,fluent-nhibernate,informix,informixdb
After studies in the customer environment and logs it was found that the error occurred due to completion of a backup in a certain schedule that caused instability in the bank resulting in connection error and after that the the application did not work properly need to be restarted (the...
NHibernate Formula Uses Wrong Prefix
c#,nhibernate,fluent-nhibernate
Formulas are basically raw SQL statements (which will be processed to add aliases), so you can't access inherited properties etc. But you can write a SQL subselect that gives you what you need. (SELECT TOP 1 pt.Delivery + t.Tax + t.Amount FROM ProductTransaction pt INNER JOIN Transaction t ON pt.Id=t.Id...
Expression.Call, Int32 and Enum
c#,fluent-nhibernate,expression,kendo-grid
Wouldn't this do the trick? MemberExpression member = Expression.Convert( Expression.Property(pe, item.Member), typeof(int); ConstantExpression value = Expression.Constant((int)item.Value); ...
FluentNHibernate MySQL configuration
mysql,nhibernate,visual-studio-2013,fluent-nhibernate
The point here is the upper/lower case (SQL vs Sql): // wrong MySqlConfiguration // Sql // MUST Be MySQLConfiguration // SQL Check the similar Q & A: MySql.Data.MySqlClient.MySqlConfiguration' does not contain a definition for 'Standard' Fluent NHibernate Here is Question with some snippet showing the right upper/lower case: MySQL Configuration...
How can I do case insensitive and concatenated field searches using nhibernate / linq?
c#,linq,nhibernate,fluent-nhibernate
To solve issue with mixed upper/lower, we can just convert both sides into .ToLower() return Session.Query<Person>() .Where(r => (r.LastName.ToLower().Contains(s.ToLower()) || r.FirstName.ToLower().Contains(s.ToLower()))); Check this link for more details how the NHibernate native InsensitiveLikeExpression.cs is working (for almost every dialect it is doing the same) : NHibernate IsInsensitiveLike treats strings as case...
NHibernate - NonUniqueObjectException
It turns out that it was a scoping issue. I had to change the code to the following to the following: Category category = null; using(var lifetime = container.BeginLifetimeScope()) { ICategoryRepository categoryRepository = lifetime.Resolve<ICategoryRepository>(); DefaultCommandBus commandBus = lifetime.Resolve<DefaultCommandBus>(); IMappingEngine mapper = lifetime.Resolve<IMappingEngine>(); category = categoryRepository.Get(x => x.Title == "Updated Category...
Getting 'Index was out of range. Must be non-negative and less than the size of the collection.' when saving a NHibernate entity
c#,nhibernate,fluent-nhibernate
This turned out to be as I expected a mapping issue but it was really hard to find. The issue was with the related properties: public virtual CnSubGroup CnSubGroupOut { get; set; } public virtual CnSubGroup CnSubGroupIn { get; set; } The CnSubGroup entity also has a version mapping and...
Fluent NHibernate cascaded save issue with non-unique objects in unique collections
fluent-nhibernate,save,duplicates
Okay, so I did basically what I said I thought would work (and it did): using (ITransaction transaction = session.BeginTransaction()) { foreach (WorkOrderTask t in WorkOrder.Tasks) { if (t.EquipmentComponent != null) { session.SaveOrUpdate(t.EquipmentComponent); session.Flush(); session.Clear(); } } session.SaveOrUpdate(WorkOrder); transaction.Commit(); } saving each component first, flushing and clearing the session between...
Querying via NHibernate without an N+1 - sample included
c#,nhibernate,fluent-nhibernate
The solution to 1 + N would've been built on top of a special NHibernate optimization feature (let me cite a bit) 19.1.5. Using batch fetching NHibernate can make efficient use of batch fetching, that is, NHibernate can load several uninitialized proxies if one proxy is accessed (or collections. Batch...
Fluent NHibernate Schema output with errors when using list
mysql,vb.net,nhibernate,fluent-nhibernate,fluent-nhibernate-mapping
I would suspect that Index could be a keyword for MySQL. To avoid such conflict, we can define different Index column name (sorry for C# notation) HasMany(x => x.PolygonData) .AsList(idx => idx.Column("indexColumnName").Type<int>()) ...
NHibernate iStatelessSession returns duplicate parent instances on eager fetch
nhibernate,fluent-nhibernate,fetch,eager,istatelesssession
I would say: Do not use StatelessSession. It does not suite to this use case. 13.2. The StatelessSession interface Alternatively, NHibernate provides a command-oriented API that may be used for streaming data to and from the database in the form of detached objects. A IStatelessSession has no persistence context associated...
Fluent NHibernate Component Mapping issue
c#,nhibernate,fluent-nhibernate,fluent,fluent-nhibernate-mapping
Your built an entity for the retail price with a complete mapping. AliasToBean transformer does not use mappings but instead mapps columns to properties by convention. Change Transformer to AddEntity: public IEnumerable<TEntity> Fetch(String sql,IEnumerable<Parameter> parameters) { return this.BuildQuery(sql, parameters).AddEntity(typeof(TEntity)).List<TEntity>(); } ...
Fluent NHibernate: Insert NULL into FK column
c#,nhibernate,fluent-nhibernate,fluent-nhibernate-mapping
You should change this: References(x => x.Address).Cascade.All(); References(x => x.CorrespondencyAddress).Cascade.All(); Into this (see .Nullable() setting) References(x => x.Address).Cascade.All(); References(x => x.CorrespondencyAddress).Nullable().Cascade.All(); Check all the available settings here (scroll down to Fluent NHibernate's equivalent) Also check this: public class Patients { ... public virtual int? IndividualId { get; set; } and...
NHibernate - SafeHandle Cannot be Null
c#,nhibernate,oracle11g,fluent-nhibernate
It turns out that it was the visual studio 2015 preview that was somehow messing up something related to oracle libraries which led to this error. I had to reformat my pc couple of times until I understood whats going on.
NHibernate. QueryOver Take(n) - with Left.Join
nhibernate,fluent-nhibernate,queryover,nhibernate-queryover
The point here is a difference in our need of paging and its implementation. while we would expect 5 root elements to be returned, the result is converted into 5 rows, 5 selected rows : Some clue could be found in this Q & A: NHibernate QueryOver with Fetch resulting...
Oracle managed driver ODP.NET with NHibernate 4.0 FLOAT (126) to C# DECIMAL/Double
nhibernate,oracle11g,fluent-nhibernate,decimal,buffer-overflow
So, what I have figured out is as follows:- Database column is float(126) which has more precision than supported by .NET hence, in some cases exception is thrown when .NET cannot handle the data (overflow). (Oracle number to C# decimal) When a formula is specified in fluent mapping, a column...
Fluent Nhibernate mappings / Join
c#,nhibernate,fluent-nhibernate
How about altering data model ? It seems that Staff is always in a given Position collection at the given Company level. This suggest following model public partial class Staff { public virtual IEnumerable<CompanyPosition> Positions { get; protected set; } } public class Position { //... } public class Company...
NHibernate QueryOver with Nested Classes
c#,nhibernate,fluent-nhibernate
This can be achieved with Futures, find the full code below for your example, public class FooBar { public virtual int FooBarId { get; set; } public virtual string FooBarName { get; set; } } public class FooBarMap : ClassMap<FooBar> { public FooBarMap() { Table("foorbar"); LazyLoad(); Id(x => x.FooBarId).GeneratedBy.Identity().Column("foobar_id"); Map(x...
Fluent NHibernate automap PostGIS geometry type
c#,nhibernate,fluent-nhibernate,postgis
I was finally able to resolve this by defining a custom UserTypeConvention, i.e.: using NetTopologySuite.Geometries; using NHibernate.Spatial.Type; public class PostGisPolygonUserTypeConvention : UserTypeConvention<PostGisGeometryType> { public override void Accept(IAcceptanceCriteria<IPropertyInspector> criteria) { criteria.Expect(c => c.Type == typeof(Polygon)); } public override void Apply(IPropertyInstance instance) { // Have to set CustomType to be able to...
Fluent Nhibernate - configure all dates to be rehydrated from UTC
datetime,nhibernate,configuration,fluent-nhibernate,utc
The way with fluent NHibernate is Convention Conventions James Gregory edited this page on 3 Apr 2012 · 1 revision ... The conventions are built using a set of interfaces and base classes that each define a single method, Apply, with varying parameters based on the kind of convention you're...
Database field with multiple allowed value types
c#,postgresql,nhibernate,fluent-nhibernate,domain-driven-design
You can use a json (or jsonb if your postgres version supports it). I wouldn't do that in this case. In order to get the best use out of indexes and data searching, it'd be best to come up with a structure that kept the different data types in different...
Fluent NHibernate do not load linked collection
fluent-nhibernate,lazy-loading,fluent-nhibernate-mapping
the lazy load convention works mostly on list's only, I have tried my fair share of troubles when I tried to use it on non-collection child elements. So yes, you can use .Conventions.Add(DefaultLazy.Always()) but that should be preferred for collections only...
fluent NHibernate session exception handling
c#,nhibernate,fluent-nhibernate
I suggest decoupling components that open session perform db operations with this approach you can keep logic for handling OpenSession() exceptions inside your 1st line and don't worry later. Reason is that if (as in your case) databaseFacade.OpenSession() throws exception you don't have to catch it and check for transaction...
QueryOver ProjectionList with different root entity types
c#,nhibernate,fluent-nhibernate,queryover,nhibernate-queryover
I think all you need to do is assign the coffee alias in the session.QueryOver<Coffee> call: Coffee coffee = null; session.QueryOver<Coffee>(() => coffee) /* etc */ The below might be completely unrelated to what you're doing, but I figured I'd include it in case anyone else is writing code that...
Speed up the NHibernate SessionFactory create process
nhibernate,fluent-nhibernate,sessionfactory,uptime
Couple of comments that might help you. You can serialise your sessionfactory after its been built. See this blog post for more info. Or Google serialise sessionfactory nhibernate as there are alot of articles If this is a web site then I would always make sure it is spun up...
What is the proper way to map a Multi-column usertype inside a fluent NHibernate SubclassMap?
c#,nhibernate,fluent-nhibernate,usertype
You should try upgrading fluent nhibernate. Please take a look at known issue https://github.com/jagregory/fluent-nhibernate/issues/210
Fluent Nhibernate and quartz error configuration section not found in application configuration file
c#,nhibernate,fluent-nhibernate,quartz.net
This issue was with my Connection String in the Quartz.server.exe, the name was different with the name used in fluent DbConfig method. Updating the name of connection string fixed the issue.
Fluent NHibernate AutoMap CultureInfo
fluent-nhibernate,fluent-nhibernate-mapping
To use NHibernate's mapping support for CultureInfo (which is there, see https://github.com/nhibernate/nhibernate-core/blob/c85d038dce8ba87bd3f4de2458b4ef6e2497f7f8/src/NHibernate/Type/CultureInfoType.cs), you'll need to tell Fluent NHibernate you want to use it by means of the following convention: using System.Globalization; using FluentNHibernate.Conventions; using FluentNHibernate.Conventions.AcceptanceCriteria; using FluentNHibernate.Conventions.Inspections; using FluentNHibernate.Conventions.Instances; public class...
MemberExpression, build Expression.Property from class
c#,fluent-nhibernate,linq-expressions
You probably want something like: public static Expression<Func<TSource, bool>> GetEquality<TSource>(object value, params string[] properties) { ParameterExpression pe = Expression.Parameter(typeof(TSource), "source"); Expression lastMember = pe; for (int i = 0; i < properties.Length; i++) { MemberExpression member = Expression.Property(lastMember, properties[i]); lastMember = member; } Expression valueExpression = Expression.Constant(value); Expression equalityExpression =...
Fluent NHibernate mapping via middle table
c#,nhibernate,fluent-nhibernate
Solution you've used could be convertied into standard ORM use case. The native or object/entity oriented solution here would be to introduce many-to-one and one-to-many mappings. That would bring lot of benefits (lazy loading == only if needed, querying...) Small note, I am expecting that the FORMULA snippet in the...
An association from the table refers to an unmapped class: System.Decimal
hibernate,nhibernate,orm,fluent-nhibernate,fluent-nhibernate-mapping
The mapping HasManyToMany would expect to have entity/object not ValueType - on the other side of many-to-many. Also many-to-many reuires the pairing table. The mapping we need here is the HasMany and for ValueType like Decimal we need .Element() mapping: HasMany(x => x.Links) .Table("A_Link_Value_Map") .KeyColumn("A_Id") .Element("Link_Value") // Value Type would...
NHibernate Purge/Truncate Table and repopulate in single transaction
.net,nhibernate,fluent-nhibernate
Option 1 session.Clear(); // to get rid associations of the objects in memory session.CreateQuery("delete from MyClass").ExecuteUpdate(); foreach(var entity in CreateNew()) session.Save(entity); Option 2 session.CreateQuery("delete from MyClass where Id not in (:ids)") .SetParameterList("ids", newIds) .ExecuteUpdate(); foreach (var id in newIds) { var entity = session.Get<MyClass>(id); // returns the cached instance if...
Fluent NHibernate Map a Stored Procedure which returns a Dynamic set of Columns
c#,sql-server,stored-procedures,nhibernate,fluent-nhibernate
instead of have a dynamic mapping you could issue the query using SQLQuery and transform the results manually using a result transformer public List<Model> CallFoo(ISession session, DateRange range) { return session.CreateSqlQuery("call sproc") .SetParameter(...) .SetResultTransformer(new ModelResultTransformer()) .List<Model>(); } class ModelResultTransformer : NHibernate.Transform.IResultTransformer { public IList TransformList(IList collection) { return collection; }...
Force fluent-nhibernate join on correct column?
c#,nhibernate,fluent-nhibernate,db2400
As of December 2014, you still cannot fix this issue: https://github.com/jagregory/fluent-nhibernate/issues/272 It makes sense because it's an ORM and we were trying to use it on a database without properly enforced relationships (the keys are missing but the data behaves this way). This issue has forced my company to drop...
extention method with type specific List
c#,fluent-nhibernate,extension-methods
Your extension method is written for IList not IList<T> and because IList<T> does not inherit IList, you need to specify type argument in the extension method: public static class Extensions { public static void Bind<T>(this IList<T> list) { //some stuff } } ...
Fluent Nhibernate One to One mapping with non primary key
c#,nhibernate,fluent-nhibernate,nhibernate-mapping,one-to-one
OK, with assignable ID we can do it like this. Firstly we should be sure, that the ID is assigned, so we can adjust the getter of the <id> ItemSaleCode like this: public class ItemSaleDetail { string _itemSaleCode; public virtual string ItemSaleCode { get { return _itemSaleCode ?? SaleParent.SaleCode ;...
Text is getting truncated on insert/update
c#,asp.net,sql-server-2008,fluent-nhibernate
I use the following syntax to define an NVARCHAR(MAX) column when mapping with Fluent NHibernate: const int NVarCharMax = 4001; // force NHibernate to allocate max length for nvarchar data Map(x => x.ColumnName).Length(NVarCharMax); This article describes the solution in more detail....
NHibernate delete child from parent collection with delete cascade
c#,nhibernate,fluent-nhibernate
Manual deletion of the collection items is not a solution. It in facts breaks the cascading feature. In case we do have mapping Cascade.AllDeleteOrphan(), we should expect that deletion of Parent will deleted Children as well - no need to do more then delete Parent. Just ... NHibernate does not...
NHibernate mapping returns null value
nhibernate,fluent-nhibernate,nhibernate-mapping
You may not like it, but the table structure described above, is not representing Entity relations you've created (so called one-to-one). In case, that one table contains column referencing the another table (FK), we have scenario: Each Order has exactly one (or null) Invoice. (many-to-one) Invoice can be referenced by...
Rewriting postgres query to NHibernate
c#,sql,postgresql,nhibernate,fluent-nhibernate
I would heavily doubt that you'll ever recieve answer for your giant SQL Query - and its conversion. Meanwhile, I would like to point out some differences in approach/thinking when using NHibernate. Use entities first. Define your model, the business domain model with Users, Topics, Boards. Spend some time to...
How do I get a new parent ID when cascade creating from a child in NHibernate?
c#,nhibernate,fluent-nhibernate
The good is, that all is working properly. And your mapping is correct. Because if this snippet is working... // This works existingChild.CreateParent(parameters); session.Save(existingChild); transaction.Commit(); ... the concept is working as well. Why? What is all about? Why Commit() helped to solve that? Well, because ISession is an abstraction, it...
How do I setup Id of entity with a ConventionBuilder in Fluent NHibernate
c#,fluent-nhibernate,fluent-nhibernate-mapping
I solved this by extending the Mappings-call a bit: .Mappings(arg => { var autoPersistenceModel = AutoMap.Source(typeSource); foreach (var overrideType in typeSource.GetOverrideTypes()) { autoPersistenceModel.Override(overrideType); } foreach (var conventionType in typeSource.GetConventionTypes()) { autoPersistenceModel.Conventions.Add(conventionType); } arg.AutoMappings.Add(autoPersistenceModel); }) Unfortunately this is far from elegant or complete - it would be way more decent if...
Fluent NHibernate Custom Access Strategy Naming Conventions
.net,vb.net,nhibernate,fluent-nhibernate
In the end it was unnecessary to use the access modifiers, or go through a field. I just had to map it as ReadOnly and it was able to automatically pick up the correct field to use when storing the data. For some reason I was under the impression that...
Fluent nHibernate with Automapping: How to set Inverse on “Child” side of relation
c#,nhibernate,fluent-nhibernate,automapping
there is no direct syntax to make the many-to-one relation the inverse one. There are some reasons for this: it is more natural and performs better, because the reference in the class (Parent) directly maps to the foreign key in the database since it needs to be consistent in memory...
Fluent NHibernate Join mapping to Joined table
c#,oracle,nhibernate,fluent-nhibernate
I guess that we should change the select. It should not be using the current table DOCLIST (which is alreaedy used for mapping the root class Doc .. Table("DOCLIST")) // current select (SELECT Distinct A.CODE FROM DOCLIST D Left Join DOCSLINKS DL On DL.TODOC_ID=D.DOC_ID Left Join ARTICLES A On DL.ART_ID=A.ART_ID...
FluentNhibernate: Query to retrieve distinct values
c#,linq,nhibernate,fluent-nhibernate
In both examples from Brenda are missing the transformation. Disclaimer: Check first if the types are correct in the DTO or in the Linq projection. public class MyDto { public string Corporation { get; set; } public DateTime? CalculationDate { get; set; } public string ValuationRule { get; set; }...
Where clause not working with parantheses
nhibernate,fluent-nhibernate,expression-trees,nhibernate-queryover
I have a doubt the error is there: Expression<Func<MyClass, bool>> mc1 = x => (x.ID > 20); Expression<Func<MyClass, bool>> mc2 = x => x.ID > 20; var body1 = mc1.Body.NodeType; // GreatThan var body2 = mc2.Body.NodeType; // GreatThan The brackets are removed by the compiler. There is nothing in the...
fluent nHibernate Restrictions.Not seems not be working properly
c#,nhibernate,fluent-nhibernate
use a subquery to filter out TableA elements having null values in tabB-Items var subquery = QueryOver.Of<TableA>() .JoinQueryOver(tabA => tabA.TableBItems) .Where(tabB => tabB.X == null || tabB.Y == null) .Select(Projections.Id()); var s = Session.QueryOver<TableA>() .Where(tabA => tabA.SomeID == 123 && tabA.SomeNullableDate != null) .WhereRestrictionOn(Projections.Id()).NotIn(subquery) .JoinQueryOver(tabA => tabA.TableBItems) .Where(tabB => tabB.X...
Fluent NHibernate - exception occurred during configuration
This happens when there is a problem with your mapping. The main exception doesn't tell you much more than that. You need to dig down to look at the text of the inner exceptions, then it is should typically become very clear what the problem is. Edit: Just to add,...
NHibernate Fluent Mapping a String Property to another Table's column
c#,nhibernate,fluent-nhibernate
Try to use joined table. public class SomeClassMap : ClassMapping<SomeClass> { public SomeClassMap() { Table("SomeClassTable"); Property(p => p.SomeClassID, map => { map.Column("SomeClassID"); map.Generator(Generators.Identity); }); Property(p => p.ClassTypeID, map => map.Column("ClassTypeID")); //Other properties here Join("SomeClassTypes", m => { m.KeyColumn("ClassTypeId"); m.Fetch.Join(); m.Map(x => x.DescriptionType).Column("Description"); }) } } EDITED If you use fluent...
Could not resolve property on KeyColumn
c#,nhibernate,fluent-nhibernate
Based on the Exception I would say, that we can face this issue in case - that the calling side looks like this: var list = ByParameter<MenuItem>("ParentId", 123); And because the snippet above does not show that class MenuItem contains ValueType (non-reference) property ParentId: public class MenuItem { // the...
Mapping to Date part of Sql DateTime
c#,sql-server,nhibernate,fluent-nhibernate,nhibernate-mapping
The way to go in case we need the skip the mapped relationship mapping (when CROSS JOIN with WHERE clause is needed) we can use HQL (only way, check e.g. here:) How to join Two tables of two non relashinship defined columns using Nhibernate QueryOver Nhibernate QueryOver JoinAlias UnRelated Entity...
Moving an NHibernate-heavy application from single-tenancy to multi-tenancy with multiple schemas
c#,nhibernate,fluent-nhibernate,multi-tenant,fluent-nhibernate-mapping
Not tested, but you can set in the SessionFactory (technically in its configuration) the default schema name. The property is hibernate.default_schema. So you could have multiple SessionFactory, one for each schema. Clearly you mustn't set the scema name at the Entity level. Something like: var config = new Configuration(); ......
NHibernate insert into a many-to-many collection for multiple objects without querying
.net,nhibernate,fluent-nhibernate,many-to-many,hql
You can not do this with HQL or Criteria, but you should be able to do this with native sql. session.CreateSQLQuery(@"INSERT INTO UsersToVehicles (VehicleId, UserId) SELECT VehicleId, :userId FROM Vehicles WHERE CategoryId = :categoryId") .SetInt32("userId", userId) .SetInt32("categoryId", categoryId) .ExecuteUpdate(); But instead of doing this consider adding TrackingUsers relation between user...
How to return sql to linq or lambda in fluent nhibernate
Assuming your domain class is TR_DISTAKENEVTVIEW int wocount = session.Query<TR_DISTAKENEVTVIEW>().Select(x => x.wo).Distinct().Count(); To use .Query() method you will have to use using NHibernate.Linq; namespace on the top...
Having different automapping “configurations”
c#,nhibernate,fluent-nhibernate,fluent-nhibernate-mapping,automapping
I've found the solution: Conventions.Find allows to find convention instances. var map = AutoMap.AssemblyOf<AutomappingConfiguration>(new AutomappingConfiguration()) .Conventions.AddFromAssemblyOf<AutomappingConfiguration>() .UseOverridesFromAssemblyOf<AutomappingConfiguration>(); foreach (var c in map.Conventions.Find<TableConvention>()) { c.AllWritable = allWritable; } ...
adding initial rows into tables using Fluent migrator
asp.net-mvc-5,fluent-nhibernate,fluent-nhibernate-mapping,fluent-migrator
In C#, you must use an equals sign ("=") in the object initializer instead of a colon (":"). Insert.IntoTable("users").Row(new { USERNAME = "superadmin",EMAIL = "[email protected]",PASSWORD_HASH = "dfgkmdglkdmfg34532+"}); Insert.IntoTable("users").Row(new { USERNAME = "admin",EMAIL = "[email protected]",PASSWORD_HASH = "dfgkmdglkdmfg34532+"}); ...
Fluent NHibernate “Could not resolve property”
c#,nhibernate,fluent-nhibernate,nhibernate-queryover
You have to think of your QueryOver query as (nearly) directly translating into SQL. With this in mind, imagine this SQL query: select Album.* from Album where Album.Name = 'SomeAlbumName' and Album.Artist.Name = 'SomeArtistName' This won't work because you can't access a related table's properties like that in a SQL...
setting self as createby
public class User : Auditable { int Id; string Username; } public class Auditable : IAuditable { public virtual int CreatedBy { get; set; } } public class AuditEventListener : IPreInsertEventListener { public bool OnPreInsert(PreInsertEvent @event) { var audit = @event.Entity as IAuditable; if (audit == null) return false; var...