So it will stay a mystery, at least for me, because I don't know what else
i should say or describe.
The containing entity is a proxy:
Marker pTM = Session.Get(10847)
=> pTM.GetType().ToString() => "Castle.Proxies.MarkerProxy"
and again
using lazy="proxy" for the many-to-one property NH loads it on demand (when
first accessed)
using lazy="no-proxy" for the many-to-one property NH loads it immediately
(before it is accessed for the first time)
Am schrieb Ricardo Peres <[email protected]>:
There are three types of proxies:
1 - Proxies to many-to-one entities (such as MyOtherEntity);
2 - Proxies to properties (such as String);
3 - Proxies to collections (such as ISet.
For the first two, you need the containing entity type to be marked as
lazy; this way, NHibernate will create a proxy for the entity type
(creating a class that inherits from it), and will replace those
properties marked as lazy (types 1 and 2), which have to be virtual,
with code that will only load them on demand, that is, when they are
first accessed. Marking a property of type 1 or 2 in a non-lazy entity
type will do exactly nothing.
RP
On May 20, 7:09 pm, Mohamed Meligy [email protected]> wrote:
> Interesting, so, this setting although does work / validate on many to
one
> properties, is essentially useless for these?
>
> *Mohamed Meligy
> *Readify | Senior Developer
>
> M:+61 451 835006 | W: readify.net
> [image: Description: Description: Description: Description:
> rss_16]http://gurustop.net>
> [image: Description: Description: Description: Description:
> cid:[email protected]]
> http://www.linkedin.com/in/meligy> [image:
> Description: Description: Description: Description:
> cid:[email protected]] http://twitter.com/meligy>
>
http://www.greatplacetowork.com.au/best/best-companies-australia.php>http://www.readify.net/AboutUs/NewsItem.aspx?id=10>
>
>
>
>
>
>
>
> On Sat, May 21, 2011 at 4:07 AM, Ricardo Peres [email protected]> wrote:
> > Is your entity marked as lazy?
> > If not, the only thing that can be lazy loaded (or proxied, if you
> > prefer) is one to many collections.
>
> > On May 20, 6:36 pm, Mohamed Meligy [email protected]> wrote:
> > > I have done some test now.
> > > Yeah, it "does" load the reference if you set lazy="no-proxy"
although
> > the
> > > article says otherwise!!
> > > Are your entities marked as lazy
> > > *Mohamed Meligy
> > > *Readify | Senior Developer
>
> > > M:+61 451 835006 | W: readify.net
> > > [image: Description: Description: Description: Description:
> > > rss_16]http://gurustop.net>
> > > [image: Description: Description: Description: Description:
> > > cid:[email protected]]
> > > http://www.linkedin.com/in/meligy> [image:
> > > Description: Description: Description: Description:
> > > cid:[email protected]] http://twitter.com/meligy>
> > >
http://www.greatplacetowork.com.au/best/best-companies-australia.php>
> >http://www.readify.net/AboutUs/NewsItem.aspx?id=10>
>
> > > On Sat, May 21, 2011 at 3:27 AM, [email protected]> wrote:
> > > > If I use "no-proxy" it should (and is) always be initialized, but
it
> > should
> > > > not be loaded immedetialy from the DB (i think).
> > > > This is not a real issue for me right now, since what i wanted
can be
> > > > accomplished using lazy="proxy", but i 'm really interested
> > > > in what the problem here is or what i'm doing wrong.
>
> > > > Am schrieb "H.Alex" [email protected]>:
>
> > > > > you can try testing with
>
> > > > > NHibernateUtil.IsInitialized(laizy property);
>
> > > > > On May 20, 12:12 pm, [email protected] wrote:
>
> > > > > > I don't think so beacuse in the first case ("proxy") => one
query
> > is
>
> > > > > > executed
>
> > > > > > in the second case ("no-proxy") => two queries are executed
> > immediately
>
> > > > > > In the first case, the second query (for the Script property)
is
> > only
>
> > > > > > executed, if i use the VS watch window
>
> > > > > > or something. This is the expected behaviour. But i thought
this
> > should
> > > > be
>
> > > > > > the same if i use "no-proxy"
>
> > > > > > Am schrieb Mohamed Meligy [email protected]>:
>
> > > > > > > The query for the Script is then executed if i look at the
> > property
> > > > in
>
> > > > > > > the VS watch window.
>
> > > > > > > Maybe this is the reason? To get the property value, even in
> > Visual
>
> > > > > > > Studio watch window, the property getter is executed.
>
> > > > > > > Mohamed Meligy
>
> > > > > > > Readify | Senior Developer
>
> > > > > > > M:+61 451 835006 | W: readify.net
>
> > > > > > > On Fri, May 20, 2011 at 7:34 PM, [email protected]>
> > wrote:
>
> > > > > > > @mohamed
>
> > > > > > > to test this, i simply do
>
> > > > > > > Marker pTM = Session.Get(10824);
>
> > > > > > > and then check the sql output to the console. Using "proxy"
only
> > one
>
> > > > > > > query is executed:
>
> > > > > > > NHibernate: SELECT marker0_.MARKER_ID as REPORTS1_282_2_...
>
> > > > > > > The query for the Script is then executed if i look at the
> > property
> > > > in
>
> > > > > > > the VS watch window.
>
> > > > > > > Using "no-proxy" the call to Get shows two executed
queries, one
> > for
> > > > the
>
> > > > > > > Marker itself and the second for the Script:
>
> > > > > > > NHibernate: SELECT marker0_.MARKER_ID as REPORTS1_282_2_...
>
> > > > > > > NHibernate: SELECT script0_.SCRIPT_ID as T1_264_3_,
> > script0_.SC_DESCR
> > > > ...
>
> > > > > > > One guess was that the ID is the problem since this is a
property
> > and
> > > > it
>
> > > > > > > will be touched to create the temp
>
> > > > > > > instance. So i changed it to
> > access="field.pascalcase-m-underscore"
> > > > but
>
> > > > > > > it did'nt solve the problem.
>
> > > > > > > Am schrieb Mohamed Meligy [email protected]>:
>
> > > > > > > > Ramon, this is not eager loading.
>
> > > > > > > > Quoting from the mentioned post:
>
> > > > > > > > When lazy is set to no-proxy, the following things
happen:The
>
> > > > > > > association is still lazy loaded (note that in older
versions of
>
> > > > > > > NHibernate, setting it to no-proxy would trigger eager
loading,
> > this
> > > > is
>
> > > > > > > no longer the case).
>
> > > > > > > > The first time that you access the property the value
will be
> > > > loaded
>
> > > > > > > from the database, and the actual type will be returned.
>
> > > > > > > > @belvasis,
>
> > > > > > > > How are checking this? Note that maybe even looking up the
> > value in
>
> > > > > > > debugger or Visual Studio Watch window triggers this. Are
you
> > sure
> > > > your
>
> > > > > > > code is not touching the property in any way?
>
> > > > > > > > Can you isolate it and paste it in a letter message?
>
> > > > > > > > Thanks a lot.
>
> > > > > > > > Regards,
>
> > > > > > > > Mohamed Meligy
>
> > > > > > > > Readify | Senior Developer
>
> > > > > > > > M:+61 451 835006 | W: readify.net
>
> > > > > > > > On Fri, May 20, 2011 at 5:08 PM, Ramon Smits
> > [email protected]>
>
> > > > > > > wrote:
>
> > > > > > > > Hm i think i understand this. But shouldn't the behaviour
be
> > the
> > > > same?
>
> > > > > > > Why "no-proxy" immediately queries
>
> > > > > > > > to the database?
>
> > > > > > > > As a proxy makes it possible to have delayed loading?
>
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