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POFluentNhibernate Mapping Using References Index Out of Range When Adding new Object
 

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    <p>I am trying to map a parent child relationship between a Person object and a Organization object in FluentNHibernate using References in the mapping file like this:</p> <p>References(x => x.Organization);</p> <p>The relationship is a Person object contains a OrganizationId column that corresponds to a record in the Organization table with the corresponding OrganizationId. Different Person records can belong to the same Organization.</p> <p>When I retrieve a Person object it works properly. Person.Organization is populated. I can save a Person object and it works properly. However, when I attempt to add a new Person object I get a Index Out of Range exception from NHibernate. The exception occurs when calling session.SaveOrUpdate(person). I've tried changing the mapping to:</p> <p>References(x => x.Organization).Cascade.None()</p> <p>Still get the same error. I can't figure out what is causing the exception. The full exception is this:</p> <p>System.IndexOutOfRangeException : Invalid index 22 for this SqlParameterCollection with Count=22. at System.Data.SqlClient.SqlParameterCollection.RangeCheck(Int32 index) at System.Data.SqlClient.SqlParameterCollection.GetParameter(Int32 index) at System.Data.Common.DbParameterCollection.System.Collections.IList.get_Item(Int32 index) at NHibernate.Type.NullableType.NullSafeSet(IDbCommand cmd, Object value, Int32 index) at NHibernate.Type.ManyToOneType.NullSafeSet(IDbCommand st, Object value, Int32 index, Boolean[] settable, ISessionImplementor session) at NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate(Object id, Object[] fields, Object rowId, Boolean[] includeProperty, Boolean[][] includeColumns, Int32 table, IDbCommand statement, ISessionImplementor session, Int32 index) at NHibernate.Persister.Entity.AbstractEntityPersister.GeneratedIdentifierBinder.BindValues(IDbCommand ps) at NHibernate.Id.Insert.AbstractReturningDelegate.PerformInsert(SqlCommandInfo insertSQL, ISessionImplementor session, IBinder binder) at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object[] fields, Boolean[] notNull, SqlCommandInfo sql, Object obj, ISessionImplementor session) at NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object[] fields, Object obj, ISessionImplementor session) at NHibernate.Action.EntityIdentityInsertAction.Execute() at NHibernate.Engine.ActionQueue.Execute(IExecutable executable) at NHibernate.Event.Default.AbstractSaveEventListener.PerformSaveOrReplicate(Object entity, EntityKey key, IEntityPersister persister, Boolean useIdentityColumn, Object anything, IEventSource source, Boolean requiresImmediateIdAccess) at NHibernate.Event.Default.AbstractSaveEventListener.SaveWithGeneratedId(Object entity, String entityName, Object anything, IEventSource source, Boolean requiresImmediateIdAccess) at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.SaveWithGeneratedOrRequestedId(SaveOrUpdateEvent event) at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.EntityIsTransient(SaveOrUpdateEvent event) at NHibernate.Event.Default.DefaultSaveOrUpdateEventListener.OnSaveOrUpdate(SaveOrUpdateEvent event) at NHibernate.Impl.SessionImpl.FireSaveOrUpdate(SaveOrUpdateEvent event) at NHibernate.Impl.SessionImpl.SaveOrUpdate(Object obj)</p>
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    1. COI cannot figure out what is causing the exception because your didn't post the code causing the exception. (entity/mapping classes)
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    2. COJust added some text to the question. It occurs when calling session.SaveOrUpdate(person) when the person object is a new person that doesn't exist in the database.
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    3. COHas the parent org been inserted previously?
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      1. USmxmissile
 

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