ExternalBlogs : Nhibernate

NHibernate: utilizzare lo 0 per rappresentare l’assenza di entità

Alessandro Sorcinelli - SharePoint e .NET — Tue, 22 Feb 2011 13:52:13 GMT

Quando si ha a che fare con database legacy, potrebbe saltar fuori la necessità di non inserire nel database valori nulli per le relazioni many-to-one nulle, ma bensì il valore zero. Questo post su NHForge, discute la problematica e definisce una soluzione...(read more)

NH Day: annullamento iscrizione ?

Alessandro Sorcinelli - SharePoint e .NET — Mon, 23 Aug 2010 11:09:07 GMT

Causa spostamento matrimonio e del relativo viaggio di nozze, non potrò partecipare al prossimo NH Day (mannaggia alla pupazza!!!). Devo annullare semplicemente l'iscrizione o è possibile girare il posto a qualcun altro? Qualcuno mi sa dare informazioni...(read more)

NHibernate 3 Alpha 2

Alessandro Sorcinelli - SharePoint e .NET — Wed, 18 Aug 2010 12:55:02 GMT

Le ferie sono già un ricordo per me, ma almeno qualche buona notizia c'e'! Durante questo periodo di inattività è stata rilasciata l'alpha 2 di NHibernate 3. Qui il link per il download: http://sourceforge.net/projects/nhibernate/files/...(read more)

NHDay: Iscrizione completata!

Alessandro Sorcinelli - SharePoint e .NET — Tue, 15 Jun 2010 20:10:48 GMT

Stavo quasi per scordarmi, ma fortunatamente i posti sono ancora disponibili e l'iscrizione al prossimo NHDay è stata fatta! Ci si vede li per chi ci sarà!...(read more)

Linq to NHibernate: how to query on a property without setter

Primordial Code — Tue, 22 Dec 2009 03:20:00 GMT

Recently I’ve started to play with Linq to NHibernate and I have to say it work pretty well for the scenarios I’m facing. It also helped me to ‘re-learn’ some things on NHibernate I usually forget. Let’s consider the case in which we have a class that...(read more)

Show NHibernate query in the trace of asp.net pages

Alkampfer's Place — Tue, 13 Oct 2009 11:27:04 GMT

When you use NHibernate and asp.net one of the most interesting stuff is looking at sql generated for each page call. While NHProf is the best tool to accomplish this task, it is interesting to trace issued sql queries using asp.net trace engine. To accomplish...(read more)

NHibernate ICriteria and filters

Alkampfer's Place — Tue, 13 Oct 2009 10:05:38 GMT

I have a project where I need to access tables with millions of rows, the project was born without nhibernate so the database was not designed with ORM in mind. I decided to improve performances with an Indexed view that materialized a join between five...(read more)

Theta join in HQL – join with unrelated entities

Alkampfer's Place — Fri, 04 Sep 2009 05:14:21 GMT

NHibernate HQL language is really powerful, and work in many scenario. Suppose you have those two classes. Action is an object capable of executing something, while ActionLog stores the result of the execution of an action. There is no direct relation...(read more)

Browse NHibernate metadata to validate property Length

Alkampfer's Place — Sun, 23 Aug 2009 11:08:00 GMT

One of the most basic validation rule for Entities that are stored in databases, is to be sure that String Properties are not too long for the corresponding field in database. There are a lot of validation framework over there, most of them using attributes...(read more)

Manage Scope or Execution Context of Repository

Alkampfer's Place — Fri, 07 Aug 2009 04:52:00 GMT

In a project I’m working with Guardian, we are using NHibernate behind a Repository Pattern. Despite the question if is good or not good to shield the session behind a Repository,we encountered a classic problem. The software is structured as service...(read more)

Manage In memory nhibernate test with sqlite and database schema

Alkampfer's Place — Fri, 24 Jul 2009 11:07:23 GMT

When you work with nhibernate you usually write a lot of tests that interact with your database, mainly to test your mapping but also when you do not want to shield the session behind a IRepository. To avoid Slow Test you should use some In Memory database...(read more)

Saving a generic Object property with nhibernate

Alkampfer's Place — Fri, 22 May 2009 00:35:34 GMT

In a old post I explained how to save an object in XML format in database with a UserType. Since this technique worked well I decided to use it in another situation. Now I have an object that have a property of type Object, and I want to be able to save...(read more)

Using ISQlQuery to load data with nhibernate

Alkampfer's Place — Tue, 19 May 2009 06:58:50 GMT

I have a project that uses both nhibernate and StoredProcedures, based on a legacy project written without nhibernate. Today I need to load a lot of data from five tables. The problem is that all these tables are managed with nhibernate, but I have no...(read more)

NHibernate/SqlServer: persist a generic ‘serializable’ object to an XML field

Guardian's Home — Mon, 18 May 2009 07:56:00 GMT

Recently we had the problem of persisting some sort of extended data attached to a business object with the schema and the data of these extended information that can vary over time (usually with an additive strategy). Since we do not need to do extensive...(read more)

Use Xml field in SqlServer with nhibernate

Alkampfer's Place — Thu, 14 May 2009 08:49:37 GMT

Xml fields in sql server are really useful, you can use xpath or xQuery to filter and impose condition on part of the xml fragment. Today we decided to store some data in an XML field of a table, and since this table was accessed both by nhibernate and...(read more)