NHibernate:未能找到元素“urn:nhibernate-mapping-2.0:hibernate-mapping”的架构信息。

边城的刀声 2007-10-18 10:09:53

在执行这个语句时cfg.AddAssembly("OfficeSunLightDataModule");
提示
未能找到元素“urn:nhibernate-mapping-2.0:hibernate-mapping”的架构信息。

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purple_tide 2007-10-18

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应该是配置文件的格式和nhibernate组件的版本对不上\

看看文件中声明的名字空间是否和nhibernate的一致例如都是1.2.0

NHibernate实例分享：Northwind Mapping

c#编写无SQL程序，ORM自动映射，NHibernate-5.2.4-bin.zip ，里面代码完全，亲测好用，与大家共享

In this article I want to discuss the lazy loading mechanism provided by NHibernate. It is recommended for maximum flexibility to define all relations in your domain as lazy loadable. This is the default behavior of NHibernate since version 1.2. But this can lead to some undesired effects if querying your data. Let's discuss these effects and how to avoid them. Term Paper AND Research Paper In my previous posts I showed how to prepare your system for NHibernate and how to implement a first NHibernate base application. This post is based on those two articles. Thesis AND Dissertation AND Essay The Domain Let's first define a simple domain. It shows part of an order entry system. I keep this model as simple as possible (a real domain model would be more complex) but it contains all aspects we want to discuss in this post. Below is the class diagram of our model We have an order entity which can be placed by a customer entity. Each order can have many order line entities. Each of the three entity types is uniquely identified by a property Id (surrogate key). The Mapping Files We have to write one mapping file per entity. It is recommended that you always have one mapping per file. Don't forget to set the Build Action of each mapping file to Embedded Resource. People often tend to forget it and the subsequent errors raised by NHibernate are not always obvious. Also do not forget to give the mapping files the correct name, that is *.hbm.xml where * denotes the placeholder for the entity name. The mapping for the Order entity might be implemented as follows <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="LazyLoadEagerLoad" namespace="LazyLoadEagerLoad.Domain">

hibernate-mapping>Analogous you can implement the mappings for the Customer entity <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="LazyLoadEagerLoad" namespace="LazyLoadEagerLoad.Domain"> hibernate-mapping>and finally the mapping for the OrderLine entity. <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="LazyLoadEagerLoad" namespace="LazyLoadEagerLoad.Domain"> hibernate-mapping>

NHibernate.Mapping-1.1.csgen

☆ 资料说明：☆ NHibernate is a port of Hibernate Core for Java to the .NET Framework. It handles persisting plain .NET objects to and from an underlying relational database. Given an XML description of your entities and relationships, NHibernate automatically generates SQL for loading and storing the objects. Optionally, you can describe your mapping metadata with attributes in your source code. NHibernate supports transparent persistence, your object classes don't have to follow a restrictive programming model. Persistent classes do not need to implement any interface or inherit from a special base class. This makes it possible to design the business logic using plain .NET (CLR) objects and object-oriented idiom. ☆ 文件清单：☆ NHibernate-3.3.3.GA-bin.7z ☆ 相关网址：☆ NHibernate 主页网址： http://nhforge.org/ NHibernate 下载网址： http://sourceforge.net/projects/nhibernate/

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