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Published on 2010-03-24T15:53:03Z
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I'm trying to save text fields in MySql using NHibernate in Asp.Net frame work. But while executing this I got the error"Object reference not set to an instance of an object". If anyone knew help me...
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Hi,
I have two objects with a many-to-many relationship between them, as follows:
public class LeftHandSide
{
public LeftHandSide()
{
Name = String.Empty;
Rights = new HashSet<RightHandSide>();
}
public int Id { get; set; }
public string Name { get; set;…
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Hello there,
I am trying to use NHibernate with Spring.Net und mySQL 5. However, when setting up the connection and creating the SessionFactoryObject, I get this InvalidCastException:
NHibernate seems to cast MySql.Data.MySqlClient.MySqlConnection to System.Data.Common.DbConnection which causes…
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One of practices advocated by Nhibernate experts is to do all actions in inside a transaction.
In a typical 3 tier web architecture, Nhibernate depedency is limited the data layer.
In such a case is it fine to use
using (var tr = NHibernateSession.Current.BeginTransaction()) {
at the controller…
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Hello, and first off thanks for your time to look at this.
For a research project I'm working on, I have a somewhat complex design (which I've been given) to persist to a database via NHibernate.
Here's an example of the class hierarchy:
TransitStrategy, TransportationCompany and TransportationLocation…
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Hello, I have a table with a time column in my SQL Server 2008 database.
The property of the object I'm trying to map to is a TimeSpan.
How can i tell FluentNHibernate to use the TimeAsTimeSpan NHibernate type, so that I don't have cast problems?
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I recently downloaded Ideras SQL virtual database, and tested it. There are a few things about this tool which caught my attention.My ScenarioIt is quite common in real life that sometimes observing or retrieving older data is necessary; however, it had changed as time passed by. The full database…
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To clone a database using Rman we used to require an existing Rman backup, on 11g we can clone databases using the "from active" database option.
In this case we do not require an existing backup, the active datafiles will be used as the source for the clone.
In order to clone with the source database…
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Hello,
I'm using cPickle to save my Database into file. The code looks like that:
def Save_DataBase():
import cPickle
from scipy import *
from numpy import *
a=Results.VersionName
#filename='D:/results/'+a[a.find('/')+1:-a.find('/')-2]+Results.AssType[:3]+str(random.randint(0,100))+Results.Distribution+"…
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Snapshot database is one of the most interesting concepts that I have used at some places recently.
Here is a quick definition of the subject from Book On Line:
A Database Snapshot is a read-only, static view of a database (the source database). Multiple snapshots can exist on a source database and…
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Database ??
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