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  • Nhibernate: Don't fetch when accessing a child objects primary key

    - by thermal7
    Hi, Is there a way in NHibernate to get the foreign key of a child object, without fetching the child object? EG. I have User and UserRole. Can I access User.UserRole.UserRoleId without causing another hit on the database to retrieve UserRole? I realize I can set fetch mode to eager and this will stop it from hitting the database again, but theoretically this shouldn't be needed, as the User table has UserRoldId in it. Thanks in advance.

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  • Not all named parameters have been set Nhibernate?

    - by user144842
    I got a problem whenever I pass char ":" from the user interface. NHibernate mistakes it as a named parameter and throws an error, since there isn't any value for it. Exception is :- Not all named parameters have been set: [%] [SELECT COUNT (*) FROM Test2 t WHERE t.FirstName LIKE ':%' AND t.LocationUID IN (38, 20)]"

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  • Fluent NHibernate caching with automapping

    - by md1337
    I'm trying to understand how to configure Fluent NHibernate to enable 2nd-level caching for queries, entities, etc... There is very little information online on how to do that. I see it can be achieved by manually mapping the entities but I don't want that. I want to be able to cache all entities and not address the classes individually. How can I do that? Thanks.

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  • NHibernate Hi-Lo

    - by cvista
    Yo Quick q: are Nhibernate HiLo ids unique accross the DB? The reason I ask is that we have multiple entities which have an image associated with them. On the client - I am simply storing these images in a folder using the enity ID as the name - am I going to trip over doing this? w://

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  • Class Map Generator for Fluent NHibernate

    - by Farzad
    Is there a Class Map generator for Fluent NHibernate? I need something like db2hbm but I want it to generate Fluent Class Maps instead of xml mappings. I am aware of AutoMapping for Fluent but that is not what I want. I want to be able to generate Class Map files from tables in database and push them to my src repository.

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  • Nhibernate - How to get rid of unwanted text cast

    - by Nicolas Cornu
    Hello, I am using Nhibernate 2 and PostgreSql The above code generate a query with a cast on expression res = _session.CreateCriteria(typeof(C)) .Add(Restrictions.Eq("Exp", Exp)) .AddOrder(new Order("Fr", false)) .SetMaxResults(MW) .List<C>(); Exp is a character varying(30) In the query: SELECT ... FROM table WHERE Exp = 'text':: text ... I want to get rid of cast 'text":: text beacause the index is not used. Nicolas

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  • common problem with Hibernate/NHibernate and child IDs

    - by tyndall
    I'm asking both Hibernate and NHibernate groups because I'm thinking this may be a common issue seen on both. What does it usually mean when you call a saveOrUpdate on a child object and... 1) If it is an insert everything works fine. 2) If it is an update its wiping out the parent ID in the database.

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  • NHibernate complex one-to-one mapping

    - by Eugene Strizhok
    There is a table A containing common unversioned data for entities. There are also tables B,C,D with versioned data of particular entity type. All of these tables are referencing table A. The task is to add a mapping of a property of entity's type, for example, stored in table B, which would reference table A, and specify a rule how entity should be fetch from table B based on identifier from table A. (For example, to fetch latest version of an entity). It it possible with NHibernate?

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  • Using NHibernate to map a nChar column to an enumerated type

    - by Morrislgn
    Hello Folks, I am trying to map a table frp, a SQL Server 2005 DB to a class which contains an enum: public class MyClass{ private YesNoOptional addressSetting; public YesNoOptional AddressSetting{ {get; set;} } } public enum YesNoOptional { Yes, No, Optional } This will dictate that one of three values is inserted into the corresponding column - 'Y', 'N', 'O'. This column is of type nchar(1). My mapping file is like so (addressSetting is the property which is causing the problem): <class name="IncidentDefinition" table="IR_INCIDENT_DEF" lazy="false" > <id name="Guid" column="INT_GUID" > <generator class="guid"></generator> </id> <property name="Reference" column="INT_REF" ></property> <property name="Description" column="INT_DESCRIPTION" ></property> <property name="AddressSetting" column="INT_ADDRESS_REQ" ></property> <property name="Active" column="INT_ACTIVE" type="YesNo"></property> <property name="PinDocId" column="INT_PIN_DOC_ID"></property> </class> Using the config above I get the following error: NHibernate.ADOException: could not initialize a collection: System.FormatException: Input string was not in a correct format.. If I try to map the enum using a custom type like so: <property name="AddressSetting" column="INT_ADDRESS_REQ" type="ML.Types.YesNoOptional, ML.Types" ></property> Error: System.FormatException: Input string was not in a correct format. Next, if I try using a specific type like so: <property name="AddressSetting" column="INT_ADDRESS_REQ" type="String" ></property> This error is generated: NHibernate.PropertyAccessException: The type System.String can not be assigned to a property of type System.ArgumentException: Object of type 'System.String' cannot be converted to type 'ML.Types.YesNoOptional'.. As a last resort I tried to specify the type as a char like so: <property name="AddressSetting" column="INT_ADDRESS_REQ" type="Char" ></property> This works a bit better, as it in it doesnt throw an error, however instead of returning the character from the table and mapping it to the enumerated type the ASCII value of the character is returned instead - so Y is represented by 89! I am hoping someone can explain what I am doing wrong and\or how why this is happening please? Thanks Morris

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  • Criteria SpatialRestrictions.IsWithinDistance NHibernate.Spatial

    - by idjones82
    Has anyone implemented this, or know if it would be difficult to implement this/have any pointers? public static SpatialRelationCriterion IsWithinDistance(string propertyName, object anotherGeometry, double distance) { // TODO: Implement throw new NotImplementedException(); } from NHibernate.Spatial.Criterion.SpatialRestrictions I can use "where NHSP.Distance(PROPERTY, :point)" in hql. But want to combine this query with my existing Criteria query. for the moment I'm creating a rough polygon, and using criteria.Add(SpatialRestrictions.Intersects("PROPERTY", myPolygon));

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  • NHibernate & WCF in version 3.0

    - by ChrisKolenko
    Hi everyone :D I've just started a new project which requires a WCF service to handle a distributed environment. I'm still trying to find the best way to implement things. I want to use NHibernate, but I've seen a few different ways to address the serialization. Is this handled in 3.0? I noticed wcf_context inside the truck :D If it isn't handled could someone point me in the right direction? Thanks everyone

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  • How to clear the entire second level cache in NHibernate

    - by Bittercoder
    I wish to clear the entire second level cache in NHibernate via code. Is there a way to do this which is independent of the cache provider being used? (we have customers using both memcache and syscache within the same application). We wish to clear the entire cache because changes external the database would have occurred (which we have no guarantees re: which tables/entities were affected).

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  • NHibernate criteria construction

    - by brianberns
    I am trying to recreate something like the following SQL using NHibernate criteria: select Range, count(*) from ( select case when ent.ID between 'A' and 'N' then 'A-M' else 'Other' end as Range from Subject ) tbl group by tbl.Range I am able to create the inner select as follows: session.CreateCriteria<Subject>() .SetProjection( Projections.Conditional( Expression.Between("Name", "A", "N"), Projections.Constant("A-N"), Projections.Constant("Other"))) .List(); However, I can't figure out how to pipe those results into a grouping by row count. Any suggestions? Thanks. -- Brian

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  • NHibernate dateTime as an ID Bad idea?

    - by Miau
    hi there I have an entity and it seems like using DateTime as the Id would be a good suit, however I there is this strange feeling that that it might be a terrible idea ( tho i cant come up with any logical reason as to why), This is an immutable object ( ie once the value is recorded it shouldn't really change ) So DateTime as id field in NHibernate yay or Nay? I would appreciate your comments on this

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  • NHibernate Query

    - by Nathan Roe
    Is it possible to get NHibernate to generate a query similar to the following with HQL or Criteria API? select * from ( select row_number() over ( partition by Column1 order by Column2 ) as RowNumber, T.* from MyTable T ) where RowNumber = 1 I can get it to execute the inner select using the formula attribute, but I can't figure out a way to write a HQL or Criteria query that lets me wrap the inner select in the outer one.

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  • SQLite connection pooling with Fluent NHibernate

    - by Groo
    Is there a way to setup SQLite connection pooling using Fluent NHibernate configuration? E.g. equivalent of DataSource=:memory: would be: var sessionFactory = Fluently .Configure() .Database(SQLiteConfiguration.Standard.InMemory) (etc.) Is there something eqivalent to "Pooling=True;Max Pool Size=1;"?

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  • NHibernate with StructureMap for a Non-Web Application

    - by Yoann. B
    Hi, What is best pratices for inject and manage Session/Transaction for NHibernate using StructureMap for a Non Web Application like an Windows Service ? In a web context, we use PerRequest Session management lifecycle using the Hybrid Lifecycle of StructureMap but for a Windows Service, i can't handle IDisposable UnitOfWork ... Thanks.

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