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Db2hbm: convert db schema to hbm

Here you can find a reverse engineering tool, and a documentation on how to use it . At present only MSSQL is fully supported, but should be easy to provide strategies for other DB. The project is open source and can be found here in the trunk.This tool...

Published jue, feb 02 2010 2:23 p.m. by felicepollano

Filed under: mapping, generators

Mapping different types - IUserType

Recently I had a problem with the application I’ve been working on. One of entity types in my domain had a property of type uint . Not a big deal, until you want to store it in Microsoft SQL Server database which does not support unsigned types...

Published jue, oct 10 2009 7:21 p.m. by Krzysztof Kozmic

Filed under: mapping, IUserType

NHibernate Filters

One of the more interesting ability of NHibernate is to selectively filter records based on some global filters. This allow us to very easily create global where clauses that we can flip on and off at the touch of a switch. Let us take a look at see what...

Published lun, may 05 2009 10:33 a.m. by Ayende

Filed under: query, mapping, HowTo, querying

NHibernate Mapping - <many-to-any/>

<many-to-any/> is the logical extension of the <any/> feature that NHibernate has. At the time of this writing, if you do a Google search on <many-to-any/>, the first result is this post . It was written by me, in 2005, and contains...

Published mié, abr 04 2009 5:52 a.m. by Ayende

Filed under: mapping

NHibernate Mapping - <any/>

Sometimes, well known associations just don’t cut it. We sometimes need to be able to go not to a single table, but to a collection of table. For example, let us say that an order can be paid using a credit card or a wire transfer. The data about those...

Published mar, abr 04 2009 5:29 a.m. by Ayende

Filed under: mapping

NHibernate Mapping - <join/>

We have previously explored the one-to-one mapping, which let you create 1:1 association in the database, but there is actually another way to map several tables to an object model. We aren’t constrained by the database model, and we can merge several...

Published lun, abr 04 2009 3:56 a.m. by Ayende

Filed under: mapping

NHibernate Mapping - <one-to-one/>

In the database world, we have three kind of associations: 1:m, m:1, m:n. However, occasionally we want to have a one to one relationship. We could simulate it easily enough on the database side using two many to one relations, but that would require...

Published dom, abr 04 2009 3:31 a.m. by Ayende

Filed under: mapping

NHibernate Mapping – Named queries <query/> and <sql-query/>

Queries are business logic , as such, they can be pretty complex, and they also tend to be pretty perf sensitive. As such, you usually want to have a good control over any complex queries. You can do that by extracting your queries to the mapping, so...

Published vie, abr 04 2009 12:55 a.m. by Ayende

Filed under: mapping

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Db2hbm: convert db schema to hbm

Mapping different types - IUserType

NHibernate Filters

NHibernate Mapping - <many-to-any/>

NHibernate Mapping - <any/>

NHibernate Mapping - <join/>

NHibernate Mapping - <one-to-one/>

NHibernate Mapping – Named queries <query/> and <sql-query/>