So doing the test, its definitely because I'm mapping an int to an
enum.

Now what should I do instead? Have an NHibernate mapped property that
is int to int and have another property or method that I actually use
to get and set the NHibernate property and do the enum to int type
setting?




On Jan 21, 12:25 pm, José F. Romaniello <[email protected]>
wrote:
> Maybe you have a nullable column, with nullable values mapped to a not
> nullable property in .net:
>  imagine you have an int column, with null values, mapped to a System.Int32:
>  in this case nhibernate will load the value as 0... and when checking if
> the value has changed... 0 != null. .so it will update the value to 0.
>
> Another case is when you have wrong types suchs a wrong mapped enum.
> The ghostbuster will tell you what is the column/property with problems.
>
> 2011/1/21 Scott <[email protected]>
>
>
>
> > Ahh, that helps a lot but one thing the blog post doesn't cover is how
> > to fix them.
> > One of my problems I noticed right away is that I am mapping an enum
> > to an int what should I be doing instead?
>
> > On Jan 21, 11:41 am, José F. Romaniello <[email protected]>
> > wrote:
> > > I always send those two links and my head singshttp://
> >www.youtube.com/watch?v=iCHFVTQKqdQ
>
> > > 2011/1/21 José F. Romaniello <[email protected]>
>
> > > > it must be a ghost:
>
> > > >http://fabiomaulo.blogspot.com/2008/10/how-test-your-mappings-ghostbu.
> > ..
>
> > > > <
> >http://fabiomaulo.blogspot.com/2008/10/how-test-your-mappings-ghostbu...>
> > > >http://jfromaniello.blogspot.com/2010/02/nhibernate-ghostbuster-versi.
> > ..
>
> > > > 2011/1/21 Scott <[email protected]>
>
> > > > Using NHibernate 3
> > > >> One of my objects has been getting marked as being modified which sets
> > > >> off a chain reaction to update a bunch of related objects and I have
> > > >> no idea why. In all the objects that get modified, the only thing that
> > > >> changes is their version number so it makes me think its something to
> > > >> do with the sets.
>
> > > >> If I do just something simple like this:
>
> > > >> Rosmat rosmat = Session.Get<Rosmat>(id);
> > > >> ITransaction tx = Session.BeginTransaction();
> > > >> tx.Commit();
>
> > > >> Then the Rosmat object I got and a bunch of other related objects get
> > > >> their version numbers updated.
>
> > > >> Here's my mapping:
>
> > > >> <class name="DatabaseModel.Models.Rosmat, DatabaseModel"
> > > >> table="Rosmat" >
> > > >>        <cache usage="nonstrict-read-write" region="RosmatCache" />
> > > >>        <id name="RefId" type="guid">
> > > >>                <generator
> > > >> class="DatabaseModel.Services.DataIntegrity.GuidExistingGenerator,
> > > >> DatabaseModel" />
> > > >>        </id>
> > > >>        <version name="Version" type="Int32" generated="never">
> > > >>                <column name="Version" not-null="true" />
> > > >>        </version>
> > > >>        <property name="Title" column="Title" type="string"
> > > >> not-null="true"/>
> > > >>        <property name="AbbrevTitle" column="AbbrevTitle" type="string"
> > > >> not-
> > > >> null="false"/>
> > > >>        <property name="Expiration" column="Expiration" type="date"
> > not-
> > > >> null="false"/>
> > > >>        <property name="ImportCode" column="ImportCode" type="string"
> > not-
> > > >> null="false"/>
>
> > > >>        <property name="MarkingRule" column="MarkingRule" type="int"
> > not-
> > > >> null="true"/>
>
> > > >>        <property name="JsonStorageString" type="string" >
> > > >>                <column name="JsonStorage" sql-type="nvarchar(max)"
> > not-
> > > >> null="false" />
> > > >>        </property>
>
> > > >>        <many-to-one name="Owner" column="OwnerUserInfoRefId"
> > > >> class="DatabaseModel.Models.UserInfo"/>
> > > >>        <many-to-one name="School" column="SchoolInfoRefId"
> > > >> class="DatabaseModel.Models.SchoolInfo"/>
>
> > > >>        <set name="StudentLists" order-by="title" lazy="true">
> > > >>                <cache usage="nonstrict-read-write"
> > region="RosmatCache" />
> > > >>                <key column="RosmatRefId" />
> > > >>                <one-to-many class="DatabaseModel.Models.StudentList"
> > />
> > > >>        </set>
>
> > > >>        <set name="RosmatPermissions" lazy="true">
> > > >>                <key column="RosmatRefId" />
> > > >>                <one-to-many
> > class="DatabaseModel.Models.RosmatPermission"
> > > >> />
> > > >>        </set>
>
> > > >>        <set name="Specialties" table="RosmatSpecialty" lazy="true">
> > > >>                <key column="RosmatRefId" />
> > > >>                <many-to-many column="SpecialtyRefId"
> > > >> class="DatabaseModel.Models.Specialty" />
> > > >>        </set>
>
> > > >>        <set name="SourceRosmats" table="SourceRosmat" lazy="true">
> > > >>                <key column="RosmatRefId" />
> > > >>                <many-to-many column="ParentRosmatRefId"
> > > >> class="DatabaseModel.Models.Rosmat" />
> > > >>        </set>
> > > >> </class>
>
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