使Spring.NET 1.3.2支持NHibernate 3.2 ByCode方式的映射

Spring.NET IoC内建对NHibernate的支持，有个NHibernateTemplate，对应配置文件如下。

<object id="HibernateTemplate" type="Spring.Data.NHibernate.Generic.HibernateTemplate,Spring.Data.NHibernate32">  <property name="SessionFactory" ref="NHibernateSessionFactory" />  <property name="TemplateFlushMode" value="Auto" />  <property name="CacheQueries" value="true" /></object>

里面会需要一个SessionFactory，这东西的配置如下

<object id="CallCenterSessionFactory" type="Spring.Data.NHibernate.LocalSessionFactoryObject, Spring.Data.NHibernate32">    <property name="DbProvider" ref="CallCenterDBProvider"/>    <property name="MappingAssemblies">      <list>        <value>ds.callcenter.fire.DataModel</value>      </list>    </property>...

但是很遗憾，它里面的MappingAssemblies只支持hbm.xml文件的映射，如何映射ByCode方式的Mapping类呢？

思路是扩展LocalSessionFactoryObject，它很好的考虑了映射的扩展性，提供了PostProcessMappings方法以提供扩展，实现如下：

public class NH32LocalSessionFactoryObject : LocalSessionFactoryObject    {        public string[] ByCodeMappingAssemblies { set { this.byCodeMappingAssemblies = value; } }        public System.Type[] ByCodeMappingTypes { set { this.byCodeMappingTypes = value; } }        protected override void PostProcessMappings(Configuration config)        {            base.PostProcessMappings(config);            buildByCodeMappings(config);        }        private void buildByCodeMappings(Configuration config)        {            //添加byCode方式的程序集            if (this.byCodeMappingAssemblies != null)            {                var mapper = new ModelMapper();                foreach (var p in byCodeMappingAssemblies)                {                    mapper.AddMappings(Assembly.Load(p).GetExportedTypes());                }                var hbmMapping = mapper.CompileMappingForAllExplicitlyAddedEntities();                config.AddDeserializedMapping(hbmMapping, null);            }            //添加byCode方式的类型集            if (this.byCodeMappingTypes != null)            {                var mapper = new ModelMapper();                mapper.AddMappings(byCodeMappingTypes);                var hbmMapping = mapper.CompileMappingForAllExplicitlyAddedEntities();                config.AddDeserializedMapping(hbmMapping, null);            }        }        private string[] byCodeMappingAssemblies;        private System.Type[] byCodeMappingTypes;    }

那新一代的配置文件就是这样的了

<object id="NHibernateSessionFactory" type="ds.gis.user.dal.NH32LocalSessionFactoryObject, ds.gis.user.dal">    <property name="DbProvider" ref="DbProvider"/>    <property name="ByCodeMappingAssemblies">      <list>        <value>ds.gis.user.dal</value>      </list>    </property>    <property name="ByCodeMappingTypes">      <list>        <!--<value>ds.gis.user.dal.mappings.cfg.RegionMap</value>-->      </list>    </property>...

里面新增了ByCodeMappingAssemblies和ByCodeMappingTypes的节点，它可以读取ByCode方式的映射类了。