I "guess" this would happen if I try to update an entity without changes?
Actually I am updating two entities and it could also be because of saving
the parent first. I am updating both records so both should have already
been created. 2x update in other words. Since I'm still awaiting NHibernate
in Action I'll ask here :)
The following code fails some of the times with the exception from the
subject.
*Persistence code:*
_session.SaveOrUpdate(child);
_session.SaveOrUpdate(child.Parent);
_session.Transaction.Commit();
*The exception:*
NHibernate.StaleStateException: Batch update returned unexpected row count
from update; actual row count: 0; expected: 2735
at NHibernate.AdoNet.Expectations.VerifyOutcomeBatched(Int32
expectedRowCount, Int32 rowCount)
at NHibernate.AdoNet.SqlClientBatchingBatcher.DoExecuteBatch(IDbCommand ps)
at NHibernate.AdoNet.AbstractBatcher.ExecuteBatchWithTiming(IDbCommand ps)
at NHibernate.AdoNet.SqlClientBatchingBatcher.AddToBatch(IExpectation
expectation)
at NHibernate.Persister.Entity.AbstractEntityPersister.Update(Object id,
Object[] fields, Object[] oldFields, Object rowId, Boolean[]
includeProperty, Int32 j, Object oldVersion, Object obj, SqlCommandInfo sql,
ISessionImplementor session)
at NHibernate.Persister.Entity.AbstractEntityPersister.UpdateOrInsert(Object
id, Object[] fields, Object[] oldFields, Object rowId, Boolean[]
includeProperty, Int32 j, Object oldVersion, Object obj, SqlCommandInfo sql,
ISessionImplementor session)
at NHibernate.Persister.Entity.AbstractEntityPersister.Update(Object id,
Object[] fields, Int32[] dirtyFields, Boolean hasDirtyCollection, Object[]
oldFields, Object oldVersion, Object obj, Object rowId, ISessionImplementor
session)
at NHibernate.Action.EntityUpdateAction.Execute()
at NHibernate.Engine.ActionQueue.Execute(IExecutable executable)
at NHibernate.Engine.ActionQueue.ExecuteActions(IList list)
at NHibernate.Engine.ActionQueue.ExecuteActions()
at
NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource
session)
at NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent
event)
at NHibernate.Impl.SessionImpl.Flush()
at NHibernate.Transaction.AdoTransaction.Commit()
at Company.Project.Data.Update(Child child)
*The mappings:*
public ParentMap()
{
Table("parent_table");
Id(x => x.Id)
.GeneratedBy.Assigned()
.Column("parent_id");
// Map columns
HasMany(x => x.Children)
.Table("child_table")
.KeyColumn("parent_id")
.LazyLoad()
.Cascade.Delete();
}
public ChildMap()
{
Table("child_table");
Id(x => x.Id)
.Column("child_id");
// Map columns
References(x => x.Parent)
.Column("parent_id")
.Not.Nullable()
.Cascade.None()
.LazyLoad();
HasMany(x => x.SomeClass)
.KeyColumn("child_id")
.Table("some_class_table")
.Cascade.All()
.LazyLoad();
HasMany(x => x.SomeClass2)
.KeyColumn("child_id")
.Table("some_class_table2")
.Cascade.All()
.LazyLoad();
}
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