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• nHibernate Mapping file

  - by bharat

  <property name="NetworkRunId" column="Network_Run_Id" /> <property name="StudyKey" column="Study_Key" insert="false" update="false" /> <property name="AnnualizationFactor" column="Annualization_Factor" /> <property name="CreateDate" column="Create_Date" /> <property name="ModifyDate" column="Modify_Date" /> <many-to-one name="StudyInfo" class="Study" lazy="false" cascade="save-update"> <column name="Study_Key" /> </many-to-one> <many-to-one name="MemberInfo" class="BusinessDataEntities.Domain.NetworkAdministration.VHAMemberCompany, BusinessDataEntities" lazy="false"> <column name="Member_ID" /> </many-to-one> <many-to-one name="NetworkRunStudyXrefInfo" class="BusinessDataEntities.Domain.NetworkAdministration.NetworkRunStudyXref, BusinessDataEntities" lazy="false"> <column name="Network_Run_Id" /> </many-to-one> <join table="[HCO_Spend_Network_Run_Study]"> <key column="HCO_Spend_Id" /> <property name="NetworkRunId" column="Network_Run_Id" insert="false" update="false"/> </join> issue with the Network run id not exist in the first table but i have a join that is having the Network_Run_Id as property how do i fix this

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• NHibernate: how to handle entity-based validation using session-per-request pattern, without control

  - by Seth Petry-Johnson

  What is the best way to do entity-based validation (each entity class has an IsValid() method that validates its internal members) in ASP.NET MVC, with a "session-per-request" model, where the controller has zero (or limited) knowledge of the ISession? Here's the pattern I'm using: Get an entity by ID, using an IFooRepository that wraps the current NH session. This returns a connected entity instance. Load the entity with potentially invalid data, coming from the form post. Validate the entity by callings its IsValid() method. If valid, call IFooRepository.Save(entity). Otherwise, display error message. The session is currently opened when the request begins and flushed when the request ends. Since my entity is connected to a session, flushing the session attempts to save the changes even if the object is invalid. What's the best way to keep validation logic in the entity class, limit controller knowledge of NH, and avoid saving invalid changes at the end of a request? Option 1: Explicitly evict on validation failure, implicitly flush: if the validation fails, I could manually evict the invalid object in the action method. If successful, I do nothing and the session is automatically flushed. Con: error prone and counter-intuitive ("I didn't call .Save(), why are my invalid changes being saved anyways?") Option 2: Explicitly flush, do nothing by default: By default I can dispose of the session on request end, only flushing if the controller indicates success. I'd probably create a SaveChanges() method in my base controller that sets a flag indicating success, and then query this flag when closing the session at request end. Pro: More intuitive to troubleshoot if dev forgets this step [relative to option 1] Con: I have to call IRepository.Save(entity)' and SaveChanges(). Option 3: Always work with disconnected objects: I could modify my repositories to return disconnected/transient objects, and modify the Repo.Save() method to re-attach them. Pro: Most intuitive, given that controllers don't know about NH. Con: Does this defeat many of the benefits I'd get from NH?

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• Fluent NHibernate Many to one mapping

  - by Jit

  I am creating a NHibenate application with one to many relationship. Like City and State data. City table CREATE TABLE [dbo].[State]( [StateId] [varchar](2) NOT NULL primary key, [StateName] [varchar](20) NULL) CREATE TABLE [dbo].[City]( [Id] [int] primary key IDENTITY(1,1) NOT NULL , [State_id] [varchar](2) NULL refrences State(StateId), [CityName] [varchar](50) NULL) My mapping is follows public CityMapping() { Id(x = x.Id); Map(x = x.State_id); Map(x = x.CityName); HasMany(x = x.EmployeePreferedLocations) .Inverse() .Cascade.SaveUpdate() ; References(x = x.State) //.Cascade.All(); //.Class(typeof(State)) //.Not.Nullable() .Cascade.None() .Column("State_id") ; } public StateMapping() { Id(x => x.StateId) .GeneratedBy.Assigned(); Map(x => x.StateName); HasMany(x => x.Jobs) .Inverse(); //.Cascade.SaveUpdate(); HasMany(x => x.EmployeePreferedLocations) .Inverse(); HasMany(x => x.Cities) // .Inverse() .Cascade.SaveUpdate() //.Not.LazyLoad() ; } Models are as follows: [Serializable] public partial class City { public virtual System.String CityName { get; set; } public virtual System.Int32 Id { get; set; } public virtual System.String State_id { get; set; } public virtual IList<EmployeePreferedLocation> EmployeePreferedLocations { get; set; } public virtual JobPortal.Data.Domain.Model.State State { get; set; } public City(){} } public partial class State { public virtual System.String StateId { get; set; } public virtual System.String StateName { get; set; } public virtual IList<City> Cities { get; set; } public virtual IList<EmployeePreferedLocation> EmployeePreferedLocations { get; set; } public virtual IList<Job> Jobs { get; set; } public State() { Cities = new List<City>(); EmployeePreferedLocations = new List<EmployeePreferedLocation>(); Jobs = new List<Job>(); } //public virtual void AddCity(City city) //{ // city.State = this; // Cities.Add(city); //} } My Unit Testing code is below. City city = new City(); IRepository<State> rState = new Repository<State>(); Dictionary<string, string> critetia = new Dictionary<string, string>(); critetia.Add("StateId", "TX"); State frState = rState.GetByCriteria(critetia); city.CityName = "Waco"; city.State = frState; IRepository<City> rCity = new Repository<City>(); rCity.SaveOrUpdate(city); City frCity = rCity.GetById(city.Id); The problem is , I am not able to insert record. The error is below. "Invalid index 2 for this SqlParameterCollection with Count=2." But the error will not come if I comment State_id mapping field in the CityMapping file. I donot know what mistake is I did. If do not give the mapping Map(x = x.State_id); the value of this field is null, which is desired. Please help me how to solve this issue.

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• how do i filter my lucene search results?

  - by Andrew Bullock

  Say my requirement is "search for all users by name, who are over 18" If i were using SQL, i might write something like: Select * from [Users] Where ([firstname] like '%' + @searchTerm + '%' OR [lastname] like '%' + @searchTerm + '%') AND [age] >= 18 However, im having difficulty translating this into lucene.net. This is what i have so far: var parser = new MultiFieldQueryParser({ "firstname", "lastname"}, new StandardAnalyser()); var luceneQuery = parser.Parse(searchterm) var query = FullTextSession.CreateFullTextQuery(luceneQuery, typeof(User)); var results = query.List<User>(); How do i add in the "where age = 18" bit? I've heard about .SetFilter(), but this only accepts LuceneQueries, and not IQueries. If SetFilter is the right thing to use, how do I make the appropriate filter? If not, what do I use and how do i do it? Thanks! P.S. This is a vastly simplified version of what I'm trying to do for clarity, my WHERE clause is actually a lot more complicated than shown here. In reality i need to check if ids exist in subqueries and check a number of unindexed properties. Any solutions given need to support this. Thanks

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• NHibernate: How to show the generated SQL-statements in the windows console

  - by Rookian

  return Fluently.Configure() .Database(MsSqlConfiguration.MsSql2008 .ConnectionString(c => c .Database(Database) .TrustedConnection() .Server(Server) ).ShowSql()) .ExposeConfiguration(c => c.SetProperty("current_session_context_class", "web")) .Mappings(m => m.FluentMappings.AddFromAssemblyOf<TeamMap>()).BuildConfiguration(); I have a web application. This configuration does not work. I also have a Console application that shall be responsible to write out all generated SQL. How can I get the generated SQL commands? Thanks in advance!

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• Auto mapping a IDictionary<string, myclass> with fluent nhibernate

  - by Marcus

  I have a simple class that looks like this: public class Item { // some properties public virtual IDictionary<string, Detail> Details { get; private set; } } and then I have a map that looks like this: map.HasMany(x => x.Details).AsMap<string>("Name").AsIndexedCollection<string>("Name", c => c.GetIndexMapping()).Cascade.All().KeyColumn("Item_Id")) with this map I get the following error and I don't know how to solve it? The type or method has 2 generic parameter(s), but 1 generic argument(s) were provided. A generic argument must be provided for each generic parameter.

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• Applying the Hibernate filter attribute to a Bag with a many-to-many relationship

  - by David P

  Consider the following Hibernate mapping file: <hibernate-mapping ...> <class name="ContentPackage" table="contentPackages"> <id name="Id" column="id" type="int"><generator class="native" /></id> ... <bag name="Clips" table="contentAudVidLinks"> <key column="fk_contentPackageId"></key> <many-to-many class="Clip" column="fk_AudVidId"></many-to-many> <filter name="effectiveDate" condition=":asOfDate BETWEEN startDate and endDate" /> </bag> </class> </hibernate-mapping> When I run the following command: _session.EnableFilter("effectiveDate").SetParameter("asOfDate", DateTime.Today); IList<ContentPackage> items = _session.CreateCriteria(typeof(ContentPackage)) .Add(Restrictions.Eq("Id", id)) .List<ContentPackage>(); The resulting SQL has the WHERE clause on the intermediate mapping table (contentAudVidLinks), rather than the "Clips" table even though I have added the filter attribute to the Bag of Clips. What am I doing wrong?

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• nhibernate virtual methods & resharper

  - by Berryl

  I am curious how other Resharper users deal wih R#'s complaint about virtual methods it thinks are unused because it can't tell that NHIb will use them at runtime. I currently leave it as a hint, reluctantly, although am tempted to shut it off completely. Cheers, Berryl

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• Fluentnhibernate and PostgerSQL, SchemaMetadataUpdater.QuoteTableAndColumns - System.NotSupportedExc

  - by Vyacheslav

  Hello! I'm using fluentnhibernate with PostgreSQL. Fluentnhibernate is last version. PosrgreSQL version is 8.4. My code for create ISessionFactory: public static ISessionFactory CreateSessionFactory() { string connectionString = ConfigurationManager.ConnectionStrings["PostgreConnectionString"].ConnectionString; IPersistenceConfigurer config = PostgreSQLConfiguration.PostgreSQL82.ConnectionString(connectionString); FluentConfiguration configuration = Fluently .Configure() .Database(config) .Mappings(m => m.FluentMappings.Add(typeof(ResourceMap)) .Add(typeof(TaskMap)) .Add(typeof(PluginMap))); var nhibConfig = configuration.BuildConfiguration(); SchemaMetadataUpdater.QuoteTableAndColumns(nhibConfig); return configuration.BuildSessionFactory(); } When I'm execute code at line SchemaMetadataUpdater.QuoteTableAndColumns(nhibConfig); throw error: System.NotSupportedException: Specified method is not supported. Help me, please! I'm very need for solution. Best regards

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• NHibernate Session DI from StructureMap in components

  - by Corey Coogan

  I know this is somewhat of a dead horse, but I'm not finding a satisfactory answer. First let me say, I am NOT dealing with a web app, otherwise managing NH Session is quite simple. I have a bunch of enterprise components. Those components have their own service layer that will act on multiple repositories. For example: Claim Component Claim Processing Service Claim Repository Billing Component Billing Service Billing REpository Policy Component PolicyLockService Policy Repository Now I may have a console, or windows application that needs to coordinate an operation that involves each of the services. I want to write the services to be injected with (DI) their required repositories. The Repositories should have an ISession, or similar, injected into them so that I can have this operation performed under one ISession/ITransaction. I'm aware of the Unit Of Work pattern and the many samples out there, but none of them showed DI. I'm also leery of [ThreadStatic] because this stuff can also be used from WCF and I have found enough posts describing how to do that. I've read about Business Conversations, but need something simple that each windows/console app can easily bootstrap since we have alot of these apps and some pretty inexperienced developers. So how can I configure StructureMap to inject the same ISession into each of the dependent repositories from an application? Here's a totally contrived and totally made up example without using SM (for clarification only - please don't spend energy critisizing): ConsoleApplication Main { using(ISession session = GetSession()) using(ITransaction trans = session.BeginTransaction()) { var policyRepo = new PolicyRepo(session); var policyService = new PolicyService(policyRepo); var billingRepo = new BillingRepo(session) var billingService = new BillingService(billingRepo); var claimRepo = new ClaimsRepo(session); var claimService = new ClaimService(claimRepo, policyService, billingService); claimService.FileCLaim(); trans.Commit(); } }

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• NHibernate Projections to retrieve a Collection?

  - by Simon Söderman

  I´m having some trouble retrieving a collection of strings in a projection: say that I have the following classes public class WorkSet { public Guid Id { get; set; } public string Title { get; set; } public ISet<string> PartTitles { get; protected set; } } public class Work { public Guid Id { get; set; } public WorkSet WorkSet { get; set; } //a bunch of other properties } I then have a list of Work ids I want to retrieve WorkSet.Title, WorkSet.PartTitles and Id for. My tought was to do something like this: var works = Session.CreateCriteria<Work>() .Add(Restrictions.In("Id", hitIds)) .CreateAlias("WorkSet", "WorkSet") .SetProjection( Projections.ProjectionList() .Add(Projections.Id()) .Add(Projections.Property("WorkSet.Title")) .Add(Projections.Property("WorkSet.PartTitles"))) .List(); The Id and Title loads up just fine, but the PartTitles returns null. Suggestions please!

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• FluentNHibernate - ClassMap vs IAutoMappingOverride

  - by Mendy

  In FluentNHibernate when should I use ClassMap and when IAutoMappingOverride<Entity> for my EntityMap classes. public class PostMap : ClassMap<Post> { public PostMap() { ... } } vs public class PostMap : IAutoMappingOverride<Post> { public void Override(AutoMapping<Post> mapping) { ... } }

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• Discriminator based on joined property

  - by Andrew

  Suppose I have this relationship: abstract class Base { int Id; int JoinedId; ... } class Joined { int Id; int Discriminator; ... } class Sub1 : Base { ... } class Sub2 : Base { ... } for the following tables: table Base ( Id int, JoinedId int, ... ) table Joined ( Id int, Discriminator int, ... ) I would like to set up a table-per-hierarchy inheritance mapping for the Base, Sub1, Sub2 relationships, but using the Disciminator property from the Joined class as the discriminator. Here's the general idea for the mapping file: <class name="Base" table="Base"> <id name="Id"><generator class="identity"/></id> <discriminator /> <!-- ??? or <join> or <many-to-one>? --> <subclass name="Sub1" discriminator-value="1">...</subclass> <subclass name="Sub2" discriminator-value="2">...</subclass> </class> Is there any way of accomplishing something like this with the <discriminator>, <join>, or <many-to-one>? NHiberante seems to assume the discriminator is a column on the given table (which makes sense to me.. I know this is unorthodox). Thanks.

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• FluentNHibernate Many-To-One References where Foreign Key is not to Primary Key and column names are

  - by Todd Langdon

  I've been sitting here for an hour trying to figure this out... I've got 2 tables (abbreviated): CREATE TABLE TRUST ( TRUSTID NUMBER NOT NULL, ACCTNBR VARCHAR(25) NOT NULL ) CONSTRAINT TRUST_PK PRIMARY KEY (TRUSTID) CREATE TABLE ACCOUNTHISTORY ( ID NUMBER NOT NULL, ACCOUNTNUMBER VARCHAR(25) NOT NULL, TRANSAMT NUMBER(38,2) NOT NULL POSTINGDATE DATE NOT NULL ) CONSTRAINT ACCOUNTHISTORY_PK PRIMARY KEY (ID) I have 2 classes that essentially mirror these: public class Trust { public virtual int Id {get; set;} public virtual string AccountNumber { get; set; } } public class AccountHistory { public virtual int Id { get; set; } public virtual Trust Trust {get; set;} public virtual DateTime PostingDate { get; set; } public virtual decimal IncomeAmount { get; set; } } How do I do the many-to-one mapping in FluentNHibernate to get the AccountHistory to have a Trust? Specifically, since it is related on a different column than the Trust primary key of TRUSTID and the column it is referencing is also named differently (ACCTNBR vs. ACCOUNTNUMBER)???? Here's what I have so far - how do I do the References on the AccountHistoryMap to Trust??? public class TrustMap : ClassMap<Trust> { public TrustMap() { Table("TRUST"); Id(x => x.Id).Column("TRUSTID"); Map(x => x.AccountNumber).Column("ACCTNBR"); } } public class AccountHistoryMap : ClassMap<AccountHistory> { public AccountHistoryMap() { Table("TRUSTACCTGHISTORY"); Id (x=>x.Id).Column("ID"); References<Trust>(x => x.Trust).Column("ACCOUNTNUMBER").ForeignKey("ACCTNBR").Fetch.Join(); Map(x => x.PostingDate).Column("POSTINGDATE"); ); I've tried a few different variations of the above line but can't get anything to work - it pulls back AccountHistory data and a proxy for the Trust; however it says no Trust row with given identifier. This has to be something simple. Anyone? Thanks in advance.

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• Delete throws "deleted object would be re-saved by cascade"

  - by Greg

  I have following model: <class name="Person" table="Person" optimistic-lock="version"> <id name="Id" type="Int32" unsaved-value="0"> <generator class="native" /> </id> <!-- plus some properties here --> </class> <class name="Event" table="Event" optimistic-lock="version"> <id name="Id" type="Int32" unsaved-value="0"> <generator class="native" /> </id> <!-- plus some properties here --> </class> <class name="PersonEventRegistration" table="PersonEventRegistration" optimistic-lock="version"> <id name="Id" type="Int32" unsaved-value="0"> <generator class="native" /> </id> <property name="IsComplete" type="Boolean" not-null="true" /> <property name="RegistrationDate" type="DateTime" not-null="true" /> <many-to-one name="Person" class="Person" column="PersonId" foreign-key="FK_PersonEvent_PersonId" cascade="all-delete-orphan" /> <many-to-one name="Event" class="Event" column="EventId" foreign-key="FK_PersonEvent_EventId" cascade="all-delete-orphan" /> </class> There are no properties pointing to PersonEventRegistration either in Person nor in Event. When I try to delete an entry from PersonEventRegistration, I get the following error: "deleted object would be re-saved by cascade" The problem is, I don't store this object in any other collection - the delete code looks like this: public bool UnregisterFromEvent(Person person, Event entry) { var registrationEntry = this.session .CreateCriteria<PersonEventRegistration>() .Add(Restrictions.Eq("Person", person)) .Add(Restrictions.Eq("Event", entry)) .Add(Restrictions.Eq("IsComplete", false)) .UniqueResult<PersonEventRegistration>(); bool result = false; if (null != registrationEntry) { using (ITransaction tx = this.session.BeginTransaction()) { this.session.Delete(registrationEntry); tx.Commit(); result = true; } } return result; } What am I doing wrong here?

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• When doing a Schema Export with hbm2ddl, is there a way to specify that you DO NOT want Nullable For

  - by Jon Erickson

  The DDL that is being created is putting all of my many to many associations into 1 table, but I actually want each many to many association in its' own table (for other reasons) Right now hbm2ddl is creating this table (only Table1Key OR Table2Key OR Table3Key should be filled out for any given record, causing this table to have nullable foreign keys): +-----------+ | xRef | +-----------+ | Table1Key | | Table2Key | | Table3Key | | RiskKey | +-----------+ I want hbm2ddl to create the following 3 tables so that there are no nullable foreign keys. +-----------+ +-----------+ +-----------+ | xRef1 | | xRef2 | | xRef3 | +-----------+ +-----------+ +-----------+ | Table1Key | | Table2Key | | Table3Key | | RiskKey | | RiskKey | | RiskKey | +-----------+ +-----------+ +-----------+

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• NHibernate Lazy="Extra"

  - by Adam Rackis

  Is there a good explanation out there on what exactly lazy="extra" is capable of? All the posts I've seen all just repeat the fact that it turns references to MyObject.ItsCollection.Count into select count(*) queries (assuming they're not loaded already). I'd like to know if it's capable of more robust things, like turning MyObject.ItsCollection.Any(o => o.Whatever == 5) into a SELECT ...EXISTS query. Section 18.1 of the docs only touches on it. I'm not an NH developer, so I can't really experiment with it and watch SQL Profiler without doing a bit of work getting everything set up; I'm just looking for some sort of reference describing what this feature is capable of. Thank you!

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• Mapping a property to a field from another table in NHibernate

  - by Khalil Dahab

  consider the following class: class Order { int OrderId {get; set;} int CustomerId {get; set;} string CustomerName {get; set;} //other fields go here } which is mapped to Orders table. Is it possible to map the property CustomerName to the Customers table through the foreign key relation?

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• NHibernate second-level cache with external updates.

  - by SztupY

  I've got a web application that is 99% read-only, with a separate service that updates the database at specific intervals (like every 10 minutes). How can this service tell the application to invalidate it's second-level cache? Is it actually important? (I don't actually care if I have too much stale data) If I don't invalidate the cache how much time is needed to the records to get updated (if using SysCache)

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• NHibernate QueryOver Issue

  - by Yoann. B

  Hi, I've a query that works well with the NH 3.0 LINQ Provider but not with the QueryOver API. I got a "could not resolve property : Profile.Customer.CustomerId" Exception var query = Session.QueryOver<Suggest>() .Where(p => p.Profile.Customer.CustomerId == customerId) .And(p => p.Job.Customer.CustomerId != customerId); var total = query.RowCount(); Any help ? Thanks.

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• NHibernate Collection Mapping - Read Only Properties

  - by Chris Meek

  I have the following class public class Person { private IList<Person> _children; public IEnumerable<Person> Children { get; } public void AddChild(Person child) { // Some business logic and adding to the internal list } } What changes would I have to make for NHibenrate to be able to persist the Child collection (apart from making everything virtual, I know that one). Do I have to add a setter to the children property which does something like a _children.Clear(); _children.AddRange(value). Currently the model expresses my intent quite nicely but I'm not sure how much alteration is need for NH to be able to help me out with persistence.

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• NHibernate: Select entire entity plus aggregate columns

  - by cbp

  I want to return an entire entity, along with some aggregate columns. In SQL I would use an inner select, something like this: SELECT TOP 10 f.*, inner_query.[average xxx] FROM ( SELECT f.Id, AVG(fb.xxx) AS [average xxx] FROM foobar fb INNER JOIN foo f ON f.FoobarId = fb.Id ) AS inner_query INNER JOIN foo f ON f.Id = inner_query.Id Is this possible with CreateCriteria?

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• NHibernate bag is always null

  - by Neville Chinan

  I have set up my mapping file and classes as suggested by many articles class A { ... IList BBag {get;set;} ... } class B { ... A aObject {get;set;} ... } <class name="A">...<bag name="BBag" table="B" inverse="true" lazy="false"><key column="A_ID" /><one-to-many class="B" /></bag>... <class name="B">...<many-to-one name="aObject" class="A" column="A_ID" />... I added a set of A's to the A table and a set of B's to the B table, all the data is stored as expected. However if I try and access aInstance.BBag.Count I get a null reference exception. I think I missing some key knowledge on how an bag gets instantiated. Thanks

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• Fluent Nhibernate expression to select on flagged enum

  - by mbalkema

  I have a domain entity that has a flagged enum as a property. The flagged enum is the target audience for the these entities. The user then has a flagged enum value of the entities they should see. I am trying to figure out the correct expression to select entities that meet the target audience for the user. public class File { public virtual TargetAudience TargetAudience { get; set; } } [Flags] public enum TargetAudience { Audience1 = 1, Audience2 = 2, Audience3 = 4, Audience4 = 8 } Expression: (This works when performed on a IList<File>, but doesn't work on a query to the database.) public Expression<Func<File, bool>> Expression { get { return ((x.TargetAudience & UserTargetedAudience) > 0); } } Any suggestions would be helpful.

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• (N)Hibernate: deleting orphaned ternary association rows when either associated row is deleted.

  - by anthony

  I have a ternary association table created using the following mapping: <map name="Associations" table="FooToBar"> <key column="Foo_id"/> <index-many-to-many class="Bar" column="Bar_id"/> <element column="AssociationValue" /> </map> I have 3 tables, Foo, Bar, and FooToBar. When I delete a row from the Foo table, the associated row (or rows) in FooToBar is automatically deleted. This is good. When I delete a row from the Bar table, the associated row (or rows) in FooToBar remain, with a stale reference to a Bar id that no longer exists. This is bad. How can I modify my hbm.xml to remove stale FooToBar rows when deleting from the Bar table?

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