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sra
 Post subject: hibernate save unmodified object
PostPosted: Fri Oct 20, 2006 8:57 am 
Newbie

Joined: Fri Oct 20, 2006 8:39 am
Posts: 4
Hi,

When I execute this code, hibernate creates in the db the new instance of PrestationPeriodiqueReelle (it's fine ....) but also update the PrestationPeriodique object and all the objects graph related to the parent.

ITransaction aTransaction = session.BeginTransaction();

PrestationPeriodique p = (PrestationPeriodique)session.Load(typeof(PrestationPeriodique), 1);

PrestationPeriodiqueReelle pr = new PrestationPeriodiqueReelle();
pr.Dossier = p.Dossier;
pr.Parent = p.Parent;
pr.OffreDetail = p.OffreDetail;
pr.Agent = p.Agent;
pr.DateRealisation = DateTime.Now;
pr.DateFin = DateTime.Now.AddMonths(1);
pr.Objet = p.Objet;

p.PrestationsReelles.Add(pr);
pr.PrestationPeriodique = p;

session.SaveOrUpdate(p);

aTransaction.commit();

I thought that Hibernate only saves modified object.

Perhaps I haven't configured rightly mapping files.

Thanks for your help
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GeAr
 Post subject: Re: hibernate save unmodified object
PostPosted: Fri Oct 20, 2006 9:25 am 
Beginner
Beginner

Joined: Wed Aug 03, 2005 8:06 am
Posts: 40
Location: Netherlands
sra wrote:
Perhaps I haven't configured rightly mapping files.


Hard to tell if we can't see your mappings...
Please show them or otherwise try session.Save(pr);
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sra
 Post subject:
PostPosted: Fri Oct 20, 2006 10:35 am 
Newbie

Joined: Fri Oct 20, 2006 8:39 am
Posts: 4
Here are the mapping files. When you update an object, only the modified objects are saved or all ?



Mapping of the parent object

Code:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
   <class name="PhenixPlus.model.client.dossier.prestation.PrestationPeriodique, PhenixPlus" table="PrestationPeriodique" >
      <id name="PrestationID" column="ID" type="Int32" unsaved-value="0">
        <generator class="identity" />   
      </id>
      <many-to-one column="DossierId" name="Dossier" class="PhenixPlus.model.client.dossier.IDossier, PhenixPlus"/>
      <many-to-one column="ParentId" name="Parent" class="PhenixPlus.model.client.dossier.prestation.DossierRepertoire, PhenixPlus"/>
      <many-to-one column="OffreDetailId" name="OffreDetail" class="PhenixPlus.model.client.OffreDetail, PhenixPlus"/>
      <many-to-one column="AgentId" name="Agent" class="PhenixPlus.model.personel.Utilisateur, PhenixPlus"/>
      <many-to-one column="ObjetID" name="Objet" cascade="all"  class="PhenixPlus.model.catalogue.Objet, PhenixPlus"/>
      <property name="Statut" column="Statut" type="Int32" length="4" />
      <property name="DateDepart" column="DateDepart" type="Nullables.NHibernate.NullableDateTimeType, Nullables.NHibernate" />
      <property name="PeriodeDB" column="Periode" type="String"/>
      <property name="Frequence" column="Frequence" type="Int32" length="4" />
      <property name="DisplayOrder" column="DisplayOrder" type="Int32" length="4" />
      <bag name="PrestationsReelles" cascade="all" lazy="true" inverse="true">
         <key column="PeriodiqueID"/>
         <one-to-many class="PhenixPlus.model.client.dossier.prestation.PrestationPeriodiqueReelle, PhenixPlus"/>
      </bag>
   </class>
</hibernate-mapping>



Mapping file of the child object

Code:
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0">
   <class name="PhenixPlus.model.client.dossier.prestation.PrestationPeriodiqueReelle, PhenixPlus" table="Prestation" >
      <id name="PrestationID" column="ID" type="Int32" unsaved-value="0">
        <generator class="identity" />
      </id>
      <discriminator column="Type" type="String" />
      <many-to-one column="PeriodiqueID" name="PrestationPeriodique" class="PhenixPlus.model.client.dossier.prestation.PrestationPeriodique, PhenixPlus"/>
      <many-to-one column="DossierId" name="Dossier" class="PhenixPlus.model.client.dossier.IDossier, PhenixPlus"/>
      <many-to-one column="OffreDetailId" name="OffreDetail" class="PhenixPlus.model.client.OffreDetail, PhenixPlus"/>
      <many-to-one column="AgentId" name="Agent" class="PhenixPlus.model.personel.Utilisateur, PhenixPlus"/>
      <many-to-one column="ObjetID" name="Objet" cascade="all"  class="PhenixPlus.model.catalogue.Objet, PhenixPlus"/>
      <property name="DateRealisation" column="DateRealisation" type="Nullables.NHibernate.NullableDateTimeType, Nullables.NHibernate" />
      <property name="DateFin" column="DateFin" type="Nullables.NHibernate.NullableDateTimeType, Nullables.NHibernate" />
      <property name="HeurePrestee" formula="(select sum(p.Heure) from Pointage p where p.PrestationID= ID)"/>
      <property name="DisplayOrder" column="DisplayOrder" type="Int32" length="4" />
      <property name="Statut" column="Statut" type="Int32" length="4" />
   </class>
</hibernate-mapping>
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sra
 Post subject:
PostPosted: Sun Oct 22, 2006 2:53 pm 
Newbie

Joined: Fri Oct 20, 2006 8:39 am
Posts: 4
Hi,

I have found what's going wrog.

It's not related to mappings.

The problem was that I use enum for some fields. It seems that when loading the object, Hibernate cast an integer to the enum. This operation modify the state of the object.

That's why some extra updates were made.

Workaround.

Define a private property that encapsulate the data from the db and define a public property that casts the integer into the enum.

Thanks fo help.

Serge
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GeAr
 Post subject:
PostPosted: Sun Oct 22, 2006 4:21 pm 
Beginner
Beginner

Joined: Wed Aug 03, 2005 8:06 am
Posts: 40
Location: Netherlands
You can also supply your enum as the datatype of the field that is an enum, (type="namespace.enumtype, assemblyname")
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triplechoco
 Post subject: Re: hibernate save unmodified object
PostPosted: Fri Jul 24, 2009 2:22 pm 
Newbie

Joined: Fri Jul 24, 2009 2:19 pm
Posts: 1
very interesting post! thanks a lot for sharing it with us..


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bradcapo
 Post subject: Re: hibernate save unmodified object
PostPosted: Wed Aug 05, 2009 10:53 pm 
Newbie

Joined: Wed Aug 05, 2009 10:52 pm
Posts: 1
this is interesting.. thanks so much for sharing!


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tenpong
 Post subject: Re: hibernate save unmodified object
PostPosted: Tue Aug 18, 2009 4:23 am 
Newbie

Joined: Tue Aug 18, 2009 3:42 am
Posts: 2
It seems that when loading the object
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tsrobinson115
 Post subject: Re: hibernate save unmodified object
PostPosted: Tue Aug 25, 2009 2:44 am 
Newbie

Joined: Tue Aug 25, 2009 2:41 am
Posts: 1
Thanks for sharing infor here


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