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

Spring.NET IoC內建對NHibernate的支援，有個NHibernateTemplate，對應設定檔如下。

<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>

裡面會需要一個SessionFactory，這東西的配置如下

<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>...

但是很遺憾，它裡面的MappingAssemblies只支援hbm.xml檔案的映射，如何映射ByCode方式的Mapping類呢？

思路是擴充LocalSessionFactoryObject，它很好的考慮了映射的擴充性，提供了PostProcessMappings方法以提供擴充，實現如下：

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方式的程式集            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方式的類型集            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;    }

那新一代的設定檔就是這樣的了

<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>...

裡面新增了ByCodeMappingAssemblies和ByCodeMappingTypes的節點，它可以讀取ByCode方式的映射類了。