Fluent nhibernate offers an alternative to nhibernate s standard xml mapping files. Its easy to create wellmaintained, markdown or rich text documentation alongside your code. Fluent nhibernate is from configuration and linq is for querying. This modified text is an extract of the original stack overflow documentation created by following contributors and released under cc bysa 3. Fluent nhibernate is another way of mapping or you can say it is an alternative to nhibernates standard xml mapping files. Its a fluent interface that allows you to map your entities completely in code, with all the compiletime safety and refactorability that brings the getting started guide has a good introduction to mapping with the fluent interface. For more information on how to download and install this database, see here. Fluent nhibernate uses the fluent pattern and it is based on conventions to create the mappings and it gives you the power of the visual studio tools such as intellisense to improve the way you map your entities. Fluent mapping is the namesake mapping style that fluent nhibernate uses. Its a fluent interface that allows you to map your entities completely in code, with all the compiletime safety and refactorability that brings the getting started guide has a good introduction to mapping with the fluent interface, and the detail provided here builds upon that introduction. The annotations only cover a subset of the fluent api functionality, so there are mapping scenarios that cannot be achieved using annotations. The code first fluent api is most commonly accessed by overriding the onmodelcreating method on your derived. Getting started with fluent nhibernate and auto mapping in.
In this post ill describe how we generate and maintain our database straight from the domain. Great post ive been following fluent nhibernate for a while but have been working on other parts of my project and havent gotten around to doing collection mappings using this for reference should make it very easy to understand which mapping is correct. Getting started fluentnhibernatefluentnhibernate wiki. There is a newer version of this package available. Fluent nhibernate tutorial pdf the wiki is your best bet. Tutorial for coders of limited skills, where not only fluentnhibernate is a challenge, but also. All of the following examples are best used when placed inside the database call of the fluent configuration. Ive had a few fluent nhibernate posts on my blog, but most of that.
Personally i think that fluent nhibernate is very exciting and promising. Fluent nhibernate framework is a great framework, where you can specify strongly typed mapping in the form of classes on the top of nhibernate framework. The getting started guide has a good introduction to mapping with fuent fluent interface. Net framework based on objectrelational mapping technique. Fluent nhibernates interface is designed for discoverability. Fortunatelly, fluent nhibernate provides possibility for automatic mapping. As to fluent nhibernator, you can find other tools such as nmg. Rather than writing xml documents, you write mappings in strongly typed. In this tutorial we will be creating a msbuild action that will build our fluent nhibernate source repository. There are several methods docjmentation that map your properties in different ways, and each one of those is a method chain that you can use to customise the individual mapping. Let author ricardo peres guide you toward a fuller understanding of one of the oldest and most flexible orms available. This happens when there is a problem with your mapping.
The nhibernate reference html, single page html, pdf, chm nhibernate features. There are a few things to take note of when we deal with such mapping especially when using fluentnhibernate. A question at stack overflow whether nhibernate and migratordotnet play nicely together caught my interest. Fluent nhibernate s interface is designed for discoverability. For this, in the model explorer the model explorer can be opened by selecting model explorer from the entity developer submenu of the tools menu select properties from the context menu of the nhibernate template and set the xml mapping action property. My biggest obstacle to getting the hang of fluent nhibernate so far has been finding the namespaces for the classes that i need to work through samples i find blog posts, so questions, etc. You need to dig down to look at the text of the inner exceptions, then it is should typically become very clear what the problem is. Instead of migratordotnet, however, i wanted to use fluent migrator because one of the teams ive been working with recently used it as well the first challenge i ran into was figuring out how to.
I have looked around for a chm or msdnlike site that would make it easier to find things, but i have come up empty. Nhibernate is an actively developed, fully featured, open source objectrelational mapper for the. All the information on test driven development on the internet and in books always recommends that you avoid hitting the database. Refactoring support means that resharper can perform property renames. Yes, fluent nhibernate is not best known for its abundance of documentation. Pdf version quick guide resources job search discussion. Master the intricacies of nhibernate, an established and powerful objectrelational mapper orm in nhibernate succinctly. The main exception doesnt tell you much more than that.
Fluent nhibernate exception occurred during configuration. A guide to implementing fluent nhibernate with mysql. This article is designed to demonstrate how to use the fluent api to configure properties. The nhibernate reference html, single page html, pdf, chm. Fluent api configuring and mapping properties and types. Every project on github comes with a versioncontrolled wiki to give your documentation the high level of care it deserves. The getting started guide has a good introduction to mapping with the fluent interface. Once youve read that then you should be able to find a bit more detail here. Currently you get runtime errors from nhibernate because the mapping document and class dont agree. Extension of the fluentnhibernate tutorial firstproject. Fluent nhibernate offers an alternative to nhibernates standard xml mapping files. Fluent nhibernate is the statically compiled, compile safe counterpart of the popular orm tool nhibernate that can be used to create mapping between the poco classes and nhibernate engine sans the. Net port of the excellent java hibernate which provides objectrelational mapping to persist objects in a relational database.
I always hear good things about nhibernate and how it is better than alternatives such as entity framework so i decided to try it out for myself. Nhibernate may not be the best solution for datacentric applications that only use storedprocedures to implement the business logic in the database, it is most useful with objectoriented domain models and business. In case fluent mapping is used, xml mapping generation should be disabled in the basic nhibernate template. So i started a little experiment to find out myself. Conventions interfaces to define conventions used for auto and fluent mappings. Fluent nhibernate the official website 04 feb 2009 documentation. Nhibernates goal is to relieve the developer from 95 percent of common data persistence related programming tasks. If you dont already know, fluent nhibernate is a fantastic opensource library to be used in conjunction with nhibernate, a powerful orm library for. Fluent nhibernate provides an api for configuring your database, this can be used in combination with the fluent configuration or on its own.
The way nhibernate works is by mapping the database to the objects with the use of mapping classes. Nhibernate may not be the best solution for datacentric applications that only use storedprocedures to. Ive realised that over the past couple of months fluent nhibernate has been growing in popularity, stupidly so. The two big things it brings to nhibernate are better refactoring support and better testability. Fluent nhibernate api documentation stack overflow. If you have no idea what im talking about, take a quick look at. Designed to serve as a persistence layer exclusively for the. I design this fluent nhibernate generator just because that i need this kind tool in my work. Note that fluent nhibernate auto mapper can live in happy coexistence with fluent nhibernate classmaps and hbms. Basically nhibernate is a way of managing information from an application to a relational database.
Ive had a few fluent nhibernate posts on my blog, but most of that content is mirrored on the wiki anyway. Onetomany mapping one of the most common nhibernate mapping used is onetomany, which is slightly more complex than the straight up onetoone. Nhibernate works by reading a usually manually created xml file that represents the mapping between the object oriented and relational models. Pdf package manager parsing performance productivity profiling razor reactive reporting. A tool that creates a virtual representation of database objects within the code. According to the documentation state object from class preinsertevent holds values. Getting started fluentnhibernatefluentnhibernate wiki github. Im going to show some of the various ways you can use this api.
53 858 266 1224 65 1189 333 1317 83 795 1241 205 1474 519 628 439 1213 1165 855 242 1535 1237 543 850 683 519 221 282 1261 584 229 891 1294 1019 1063 1407 57 1059 566 1442