So basically passing the version from my UI layer and setting it is
unsupported? Does anyone have any suggestions on how this is achieved?
I am yet to find anything out there.
Cheers
On Wed, Oct 1, 2008 at 8:20 PM, Fabio Maulo <[EMAIL PROTECTED]> wrote:
> If the timestamp are working changing it by your self it is, probably, for
> chance.
> The version is "auto-changed" by NH when NH detect a change in, at least, a
> property.
> Conceptually the version never go back to an old value.
>
> 2008/10/1 Stefan Sedich <[EMAIL PROTECTED]>
>>
>> Understood, so how would I go about mapping the version from my DTO to
>> my retrieved NH object? Going back to a DB managed timestamp works
>> fine but would like to stick with integers if possible.
>>
>> On Wed, Oct 1, 2008 at 8:11 PM, Fabio Maulo <[EMAIL PROTECTED]> wrote:
>> > The version is managed by NH. You can't change it by yourself.
>> >
>> > 2008/10/1 codemonkey <[EMAIL PROTECTED]>
>> >>
>> >> Another test I tried:
>> >>
>> >> <?xml version="1.0" encoding="utf-8"?>
>> >> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
>> >> <class name="NHibernateTesting.Model.Order, NHibernateTesting"
>> >> lazy="false" table="Orders">
>> >> <id name="Id" column="Id" type="int">
>> >> <generator class="native" />
>> >> </id>
>> >> <version name="RowVersion" column="RowVersion" type="int" unsaved-
>> >> value="0" />
>> >> <property name="Name" column="Name" type="string" />
>> >> <property name="Total" column="Total" type="Decimal" />
>> >> </class>
>> >> </hibernate-mapping>
>> >>
>> >> Initial data, inserted with NDBUnit
>> >>
>> >> <Orders>
>> >> <Id>1</Id>
>> >> <Name>Test</Name>
>> >> <Total>10.0</Total>
>> >> <RowVersion>2</RowVersion>
>> >> </Orders>
>> >>
>> >> Then try an update and set rowversion to older:
>> >>
>> >> var order = this.session.Get<Order>(1);
>> >>
>> >> order.RowVersion = 1;
>> >> order.Name = "Test";
>> >>
>> >> session.Update(order);
>> >>
>> >>
>> >> I would expect this to fail (I guess I have this totally wrong), if I
>> >> set genrated="never" on the version it will fail but obviously rely on
>> >> DB to increment. It will increment the version to 3 and save happily,
>> >> I can see in the log it states incrementing from 2 to 3, where is it
>> >> getting this 2 from? I assume some cache? If I evict the object it
>> >> will work fine showing that it is caching something. Please slap me
>> >> straight :P
>> >>
>> >>
>> >>
>> >> Cheers
>> >>
>> >>
>> >>
>> >> On Oct 1, 3:25 pm, codemonkey <[EMAIL PROTECTED]> wrote:
>> >> > It seems that If I evict my object out of the session it works, why
>> >> > would this be the case? I am selecting first so my child collections
>> >> > are not lost and I can map across the values from my DTO, this worked
>> >> > fine with a TimeStamp version column don't see why the integer is
>> >> > different maybe becuase the int is incremented by NH?
>> >> >
>> >> > On Oct 1, 2:23 pm, codemonkey <[EMAIL PROTECTED]> wrote:
>> >> >
>> >> > > Hello,
>> >> >
>> >> > > I recently changed all my RowVersion columns to use an integer
>> >> > > instead
>> >> > > of the timestamp I was using, my optimistic locking was working
>> >> > > previously and the error would be thrown if I opened up the same
>> >> > > record and edited one, then edited the same version.
>> >> >
>> >> > > My service method firsts selects the record maps across from my DTO
>> >> > > and updates, no data acess code has changed just the RowVersion
>> >> > > column
>> >> > > has changed. Any ideas would be great this is driving me nuts:
>> >> >
>> >> > > public void Update(CourseUpdateDTO courseDTO) {
>> >> >
>> >> > > // Load the existing course.
>> >> > > var course =
>> >> > > this.courseRepository.SelectById(courseDTO.Id);
>> >> >
>> >> > > // Map properties across.
>> >> > > course.CricosCode = courseDTO.CricosCode;
>> >> > > course.Description = courseDTO.Description;
>> >> > > course.InternalCode = courseDTO.InternalCode;
>> >> > > course.Title = courseDTO.Title;
>> >> > > course.RowVersion = courseDTO.RowVersion;
>> >> >
>> >> > > // Validate the model and update using the repository.
>> >> > > course.Validate();
>> >> > > this.courseRepository.Update(course);
>> >> >
>> >> > > }
>> >> >
>> >> > > Mapping:
>> >> >
>> >> > > <?xml version="1.0" encoding="utf-8"?>
>> >> > > <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
>> >> > > <class name="Course" table="Courses" lazy="false">
>> >> > > <id name="Id" column="ID" type="int">
>> >> > > <generator class="native" />
>> >> > > </id>
>> >> > > <version name="RowVersion" column="RowVersion"
>> >> > > unsaved-value="0" /
>> >> >
>> >> > > <many-to-one name="Institution" column="InstitutionID"
>> >> > > cascade="none" not-null="true" fetch="join" />
>> >> > > <many-to-one name="SubjectArea" column="SubjectAreaID"
>> >> > > cascade="none" not-null="true" fetch="join" />
>> >> > > <property name="Title" column="Title" type="string" />
>> >> > > <property name="CricosCode" column="CRICOSCode" type="string"
>> >> > > />
>> >> > > <property name="InternalCode" column="InternalCode"
>> >> > > type="string"
>> >> > > /
>> >> >
>> >> > > <property name="Description" column="Description" type="string"
>> >> > > /
>> >> >
>> >> > > <set name="CourseSemesters" inverse="true" lazy="true"
>> >> > > cascade="delete-orphan">
>> >> > > <key column="CourseID" />
>> >> > > <one-to-many
>> >> > >
>> >> > >
>> >> > > class="Phoenix.Link2Uni.ApplicationManager.Model.CourseSemester,Phoenix.Lin
>> >> > > k2Uni.ApplicationManager.Model" /
>> >> >
>> >> > > </set>
>> >> > > </class>
>> >> > > </hibernate-mapping>
>> >> >
>> >> > > Thanks
>> >>
>> >
>> >
>> >
>> > --
>> > Fabio Maulo
>> >
>> > >
>> >
>>
>>
>>
>> --
>> Stefan Sedich
>> Developer
>> Microsoft Certified Professional (MCP)
>>
>>
>
>
>
> --
> Fabio Maulo
>
> >
>
--
Stefan Sedich
Developer
Microsoft Certified Professional (MCP)
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