Ive now found out that Nhibernate does not trigger OnPostUpdate if
only items in the collection has been updated (and not the main
object). Ive fixed this so i automaticlly sets a date on MyObject
(needed it for the domain anyway so its no big deal). But there stills
no info about MyOtherObjects.N
I can’t seem to find a solution on a problem I have with Nhibernate
Search and Lucene. Basically I want to be able to search a collection
(many-to-many) on an object, but the collection does not seem to get
indexed. I’ve checked with Luke.
I’m only interested in doing searches on MyObject, but al
Hi All,
I have a requirement where when i do a delete i should not hard
delete, instead just update the Status of the record and based on some
mode i have to create a new record too.
so i have stored procedure that takes the id of the entity to be
deleted, table name and mode
and in sql-delete
If I well remember I have something in my own TODO list of generators
(rollback identifiers).There is something similar using Table-based-id
generator.
Btw that generator is not so hard to implements even is I don't like
full-server-side generator ID.
The only one full server side I like is sequenc
Increment isn't safe to use for multiple app domains. HiLo is
ultimate all-round IMO. I can do batch inserts from NH and they don't
collide across appdomains. I usually set the max_lo to 500 as I've
found that to be ideal and it makes the gaps small though I don't
consider the gaps an issue.
T
This is almost exactly what NH Increment generator does, hilo takes it
further. BTW, you can set capacity (maxLo) for HiLo generator, if that makes
your dba happy, this will have even less gaps.
Why do those DBAs are careful about it? You have quantillions(10^18) of IDs
when using long!
Tuna Tok
Guessing from the sounds of it he is like our dba. He wants ids to be
generated in order no matter what and not to skip any if something
happens like a transaction failure.
Our dbs have a special table in them called next_id. This table has 1
row and a column for each table with an id generated
Use HiLo if possible, convince him this is the best way, or use
guid.comthat creates less index fragmentation.
Tuna Toksöz
Eternal sunshine of the open source mind.
http://devlicio.us/blogs/tuna_toksoz
http://tunatoksoz.com
http://twitter.com/tehlike
On Wed, May 27, 2009 at 12:01 AM, allan.ri
MAX ? very faster no? especially because is need a lock.
2009/5/26 allan.ritc...@gmail.com
>
> Unique identifiers are also considered the devil since they apparently
> don't replicate (which I've never heard of) and they are slow.
> guid.comb is extremely efficient but he wouldn't hear anymore a
A little OT, but possibly informative.
I was recently doing some work with DB2. Everything was great in the Systest
environment, but when we hit Prod we suddenly got thousands of additional
Name records in our results sets---all for same guy.
Turns out the original DBAs (15 years ago) had decided
Unique identifiers are also considered the devil since they apparently
don't replicate (which I've never heard of) and they are slow.
guid.comb is extremely efficient but he wouldn't hear anymore about
it.
The current insert sprocs do the following
INSERT INTO Table(ID, SomeColumn) WITH(XLOCK) VA
Actually, I almost like Markus' idea. Thanks for that. I think I
could add a default to the column in the DB. I'm not sure how this
would handle criteria queries Expression.IsNull(child.Parent) etc. A
lazy load of a many-to-one would still load up the placeholder record
which is not ideal.
The
*
it isn't going to leave alot of gaps in the IDs. I offered him unique
identifiers but we all know that didn't go anywhere.*
why?
Tuna Toksöz
Eternal sunshine of the open source mind.
http://devlicio.us/blogs/tuna_toksoz
http://tunatoksoz.com
http://twitter.com/tehlike
On Tue, May 26, 2009
What *does* he want with ids if not hilo and not sequences or guids?
Cheers,
Greg
On Tue, May 26, 2009 at 4:50 PM, allan.ritc...@gmail.com <
allan.ritc...@gmail.com> wrote:
>
> 1) It would be nice to work with nullable datetimes in the code since
> that is a "not set" scenario to object guys.
1) It would be nice to work with nullable datetimes in the code since
that is a "not set" scenario to object guys. I've already made the
user type that converts to/from the DB. It is easy and clean and
makes both parties happy.
3) oh he hasn't accepted it yet. The argument being that it leaves
The question is the same done in the Spanish group and the answer is the
same.Resuming here
IEntityPersister
(ISessionFactoryImplementor)sessionFactory.GetEntityPersister(string
entityName)
where entityName is the FullName of your class
to get values
select e.id from Entity e (note "id" in lower c
I need to get a row with values and column's names (as if I use
DataRow) quering with NHibernate. Im able to get a row in the form of
Object[] but isn't enough:
ISQLQuery query = session.CreateSQLQuery("SELECT * FROM " + _dataTable
+ " WHERE " + _dataColumn + "=?");
query.SetInt32(0, id_);
query.
Hello!
I'm a newbie in this matter, and i'm starting to use nhibernate.
I couldn't find any posts refering this.
So i'm having some doubts...
When you have a relation between two tables and one of the tables has
two primary keys and the other only has one, does this mean we have a
one to many re
Hello!
I'm a newbie in this matter, and i'm starting to use nhibernate.
I couldn't find any posts refering this.
So i'm having some doubts...
When you have a relation between two tables and one of the tables has
two primary keys and the other only has one, does this mean we have a
one to many re
1) you don't need a custom user type (a DateTime had a value)2) you don't
need a custom user type (assign string.Empty to the property in the Ctor)
3) Alleluia!!! a DBA accepting HighLow
4) here you really need to do something. Zero is a value and even if you can
use not-found="ignore" NH will try
Create an instead-of-trigger that replaces null with 0 on relations
and ignore missing records via configuration.
-Markus
2009/5/26 allan.ritc...@gmail.com :
>
> I work with an extremely difficult SQL Server DBA that hates anything/
> everything that is not a stored procedure. However, he's s
I work with an extremely difficult SQL Server DBA that hates anything/
everything that is not a stored procedure.However, he's started
coming around and but has still placed the following constraints.
1) Dates must be small datetime and NON-nullable. Nullable dates are
equal to 1900/1/1. Ea
two RDBMS = two sessionFactories
2009/5/26 Aaron Alexander
>
> I am working on some code that needs to publish (replicate) data
> across multiple servers. I will retrieve information from a SQL
> Server database. I then need to publish the information to multiple
> Oracle databases. The data
MAMMON,-Who know me and who read my blog know that I respect Microsoft and I
respect the coming soon EF4 but that is another matter.
-Create a test case (note a TEST CASE not a patch to fix the problem) should
not be need a high skill.
-Defensive... who? when ? In my personal case I can't get def
If your real world case is more complex than your example (?), I would consider
impl state pattern rather than your enum.
<< giving the object an initialization state>>
IIRC - I've seen some example at nhforge how to use a parameterized ctor, but
if you want to keep your design, it's seems a lo
Hi,
In my application I want to do the following:
public enum State
{
Writable,
Readonly
}
public class DomainObject
{
private string _name;
public DomainObject() { }
public int Id { get; private set; }
public State State { get; set; }
public string Name
{
I've been thinking a lot about this post. In the last 18 months I
have used NHibernate a lot. The main product I develop where I am
employed is an internal ordering system used by as many as 17,000
employees, and it uses NHibernate for the data access layer. It's not
a HUGE project or an ENORMO
I am working on some code that needs to publish (replicate) data
across multiple servers. I will retrieve information from a SQL
Server database. I then need to publish the information to multiple
Oracle databases. The data structure in Oracle is different than in
SQL Server but the data struct
Hi Roger - thank you for your reply. :-)
I have only tried to use the Criteria API:
var criteria = session.CreateCriteria(typeof(A)).Restrictions.IdEq
(id);
criteria.SetFetchMode("Manager.BList", FetchMode.Join);
criteria.CreateAlias("Manager.BList","bl");
criteria.SetFetchMode("bl.CList", Fetc
Hi Thomas,
I had some problem with the use of fetch mode myself. My problem, as
far as I remerber, was that I used fetch mode "join" with a HQL query.
I understand the documentation that this is not supported:
>>> NHibernate reference, p. 116
...
The fetch strategy defined in the mapping docume
On Tue, May 26, 2009 at 8:35 AM, Zihotki wrote:
>
> Is there any sample of using custom validators which depends on data
> in database? For example a validator which checks whether the email of
> user is unique.
That I recall there isn't. But you can build your own custom validator and
make the
yes ur right sorry for the futile question :(
On May 26, 3:24 pm, Stefan Steinegger wrote:
> What else should it be?
>
> On 26 Mai, 11:25, srinivas wrote:
>
>
>
> > Is tag always a Foreign Key in the Collection
> > table?- Hide quoted text -
>
> - Show quoted text -
--~--~-~--~~-
Hi,
if anyone is interested ...
I implemented a solution mapping the collection with a where clause.
Thus, the collection will hold exactly one item.
>>>
...
..
<<<
The mapped class additionally provides a derived property which reads
this single element from the collection. Th
You want to eager load some entities and their collections using joins on db
side?
As you mention, fetchmode.join (or join fetch in hql), should be the way to go.
SetFetchMode("SomeCollection", FetchMode.Join)
If you have misspelled "SomeCollection" or not using the mapped prop name, you
will
Hello everyone.
I want to optimize the loading of data in my domain model.
In the past I have used MultiCriteria to load data from different
tables "in one go" to the database.
However, is it possible to use something similar to MultiCriteria to
have NHibernate load an entity and its associatio
Hello all,
Is there any sample of using custom validators which depends on data
in database? For example a validator which checks whether the email of
user is unique.
And is this possible to use dependency injector with validators?
Thanks in advance.
--~--~-~--~~~---
What else should it be?
On 26 Mai, 11:25, srinivas wrote:
> Is tag always a Foreign Key in the Collection
> table?
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Many thanks to you and all the other contributors for these releases!
Cheers,
John
On May 24, 9:52 pm, Fabio Maulo wrote:
> Few minutes ago NH2.1.0Alpha3 was released.
>
> --
> Fabio Maulo
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Is tag always a Foreign Key in the Collection
table?
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I got it.
the problem is my ReturnType is not correct. ReturnType should be:
public virtual Type ReturnedType
{
get { return typeof( CodeText ); }
}
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