here is the classes:
public class User
{
private int Key;
private string name;
private Title title;
public Spender()
{
name = string.Empty;
title = null;
}
public Spender(Spender spender)
{
key = spender.Key
name = spender.Name;
title = spender.Title;
}
public virtual int Key
{
get { return key; }
set { name = key; }
}
public virtual string Name
{
get { return name; }
set { name = value; }
}
public virtual Title Title
{
get { return title; }
set { title = value; }
}
}
and title class is:
pubic class Title
{
private int key;
private string name;
public Title()
{
name = "";
}
public Title( Title title ) {
key = title.Key;
description = title.Description;
}
public virtual int Key
{
get { return key; }
set { name = value; }
}
public virtual Title Title
{
get { return title; }
set { title = value; }
}
}
The way how i save that is like defined in the book, i mean
i have the class UserModel;
[PersistenceConversational(
MethodsIncludeMode = MethodsIncludeMode.Implicit)]
public class UserModel : IUserModel
{
private readonly IDao<User> _userDAO;
public virtual void Save(User user)
{
_userDAO.Save(user);
}
}
The implementation of DAO and DaoImp ist just like this found in the
book in chapter 3 pages (94,95,96)
Thanks again Fabio
On 5 Dez., 01:18, Fabio Maulo <[email protected]> wrote:
> Can we see your classes and what you are doing to persist a User ?
>
> --
> Fabio Maulo
>
> El 04/12/2010, a las 20:48, megaman <[email protected]>
> escribió:
>
> yes:
> User mapping-File:
> <class name="Spender" table="user" lazy="false" >
> <id name="Key" column="user_id" type="Int32" >
> <generator class="identity" />
> </id>
> <many-to-one
> name="Title"
> column="TITLE_ID"
> class="Title"
> not-found="ignore" />
> </class>
>
> Title mapping-File:
> <class name="Title" table="TITLE">
> <id name="Key" column="TITLE_ID" type="Int32" >
> <generator class="identity" />
> </id>
>
> <property name="Name" type="String" >
> <column name="DESCRIPTION" />
> </property>
> </class>
>
> On 5 Dez., 00:21, Fabio Maulo <[email protected]> wrote:
>
> advise: switch your mind.
>
> When you are working with a tool as NHibernate you have to talk about
>
> entities, components (aka valueObjects), with properties and relations
>
> between classes.
>
> Can we see your classes and what you are doing to persist a User ?
>
> On Sat, Dec 4, 2010 at 6:32 PM, megaman <[email protected]
>
> >wrote:
>
> Hi Jason,
>
> glad to hear from you and thank you for the book, great tips
>
> there ;-).
>
> So the problem is why nhibernate try to update the title table. This
>
> is an unidirectional many-one relationship.
>
> I just wanna update the table user, i mean the entity user has a
>
> reference to the entity title thats clear but in the db the table
>
> user
>
> has only the fk titleId.
>
> Please i need you help and thanks again.
>
> On 4 Dez., 21:46, Jason Dentler <[email protected]> wrote:
>
> The instructions in the exception message are clear. Title is transient,
>
> and
>
> it is referenced in the graph of objects to be saved. You must explicitly
>
> save the title before flushing -or- use a cascade option that will do
>
> this
>
> for you automatically.
>
> Thanks,
>
> Jason
>
> On Sat, Dec 4, 2010 at 10:56 AM, megaman <
>
> [email protected]>wrote:
>
> hi everyone,
>
> i have already set the cascade to none but when i save the user , i
>
> always get the exception object references an unsaved transient
>
> instance - save the transient instance before flushing. maybe i have
>
> to disable the auto dirty checking option? i am using the cbpt pattern
>
> to deal with multiple sessions management.
>
> Guys i need some help here.
>
> Thanks in advance
>
> On 4 Dez., 17:53, megaman <[email protected]> wrote:
>
> hi everyone,
>
> i implemented the tip of the book "nhibernate 3 cookbook"
>
> concerning "CbpT" pattern. In my modell i have an unidirectional
>
> many-
>
> to-one association in the child. Here is the example:
>
> Title
>
> -----
>
> TitleId
>
> Description
>
> User
>
> -----
>
> UserId
>
> TitleId
>
> The class user has a reference to the object Title because i want to
>
> display in my gui the description. So user has a unidirectional
>
> many-
>
> to-one association with the table Title.
>
> if i save the User say Session.save( User ) and ten call SaveAll()
>
> which flush the session, i get the exception "save transient entity
>
> Title" and dont get that because the cascade option is set to none.
>
> The definition of this association in the user mapping file is:
>
> many-to-one
>
> name="Title"
>
> column="TitleId"
>
> class="Title"
>
> cascade="none"
>
> not-found="ignore"
>
> Thanks in advance
>
> --
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> Fabio Maulo
>
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