[fluent-nhib] Nhibernate and Windows Service

[Sacha]

I have a Windows service which has a timer and in the timer_Elapsed
event handler a method from another component will be called which is
supposed to look into db and read or update some records.
The timer Elapsed event is getting fired every 2 minutes.I used
nhibernate for data access and all the nhibernate and db related
configuration code is done in the component and windows service has a
reference to the component.When I run the method from unit test it is
working fine which means the configurations and mappings are correct,
but from windows service I get this exception:


    FluentNHibernate.Cfg.FluentConfigurationException was caught
      Message="An invalid or incomplete configuration was used while
creating a SessionFactory. Check PotentialReasons collection, and
InnerException for more detail.\r\n\r\n"
      Source="FluentNHibernate"
      StackTrace:
           at
FluentNHibernate.Cfg.FluentConfiguration.BuildConfiguration() in d:
\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs:line
121
     InnerException: NHibernate.MappingException
           Message="Could not configure datastore from input stream
(XmlDocument)"
           Source="NHibernate"
           StackTrace:
                at NHibernate.Cfg.Configuration.LogAndThrow(Exception
exception)
                at NHibernate.Cfg.Configuration.AddInputStream(Stream
xmlInputStream, String name)
                at
NHibernate.Cfg.Configuration.AddDocument(XmlDocument doc, String name)
                at
NHibernate.Cfg.Configuration.AddDocument(XmlDocument doc)
                at
FluentNHibernate.PersistenceModel.Configure(Configuration cfg) in d:
\Builds\FluentNH\src\FluentNHibernate\PersistenceModel.cs:line 265
                at
FluentNHibernate.Cfg.FluentMappingsContainer.Apply(Configuration cfg)
in d:\Builds\FluentNH\src\FluentNHibernate\Cfg
\FluentMappingsContainer.cs:line 141
                at
FluentNHibernate.Cfg.MappingConfiguration.Apply(Configuration cfg) in
d:\Builds\FluentNH\src\FluentNHibernate\Cfg
\MappingConfiguration.cs:line 64
                at
FluentNHibernate.Cfg.FluentConfiguration.BuildConfiguration() in d:
\Builds\FluentNH\src\FluentNHibernate\Cfg\FluentConfiguration.cs:line
112
           InnerException: System.TypeInitializationException
                Message="The type initializer for
'NHibernate.Util.TypeNameParser' threw an exception."
                Source="NHibernate"
                TypeName="NHibernate.Util.TypeNameParser"
                StackTrace:
                     at NHibernate.Util.TypeNameParser.Parse(String
type, String defaultNamespace, String defaultAssembly)
                     at
NHibernate.Cfg.ClassExtractor.ClassEntry..ctor(String extends, String
className, String entityName, String assembly, String namespace)
                     at
NHibernate.Cfg.ClassExtractor.GetClassEntries(XmlDocument document)
                     at
NHibernate.Cfg.MappingsQueue.AddDocument(NamedXmlDocument document)
                     at
NHibernate.Cfg.Configuration.AddDocumentThroughQueue(NamedXmlDocument
document)
                     at
NHibernate.Cfg.Configuration.AddXmlReader(XmlReader hbmReader, String
name)
                     at
NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream,
String name)
                InnerException: System.Threading.ThreadAbortException
                     Message="Exception of type
'System.Threading.ThreadAbortException' was thrown."
                     InnerException:

Here is the code I have in the service :

       public InitiatorService()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            timer1.Enabled = true;
        }

        protected override void OnStop()
        {
        }
    private void timer1_Elapsed(object sender,
System.Timers.ElapsedEventArgs e)
        {
            lock (processLock)
            {
                DoWorkComponent component= new DoWorkComponent ();
                component.DoWorkMethod();
            }
        }

In the DoWorkComponent :

public void DoWorkMethod()
        {
            try
            {
               ISession session =GetSession();
                ITransaction transaction = session.BeginTransaction();

                //code to do actions

                 session.Flush();
                 transaction.Commit();
                 session.Close();            }
            catch (Exception ex)
            {
                throw new InvalidOperationException(ex.Message);
            }
}

Please let me know if this is a correct practice and how I can fix
this problem.

The nhibernate version I am using is 2.1.2.4000 and I set CallContext
to thread_static.

Thanks in Advance,

Sacha

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