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  • Many to one example 3 of 4

    <?xml version="1.0" encoding="utf-8" ?>
    <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="TstDBConnection.Entities" assembly="TstDBConnection">
      <class name="Tree" table="Tree">
        <id name="Id" column="Id">
          <generator class="guid.comb"/>
        </id>
        <property name="Name" column="Name"></property>
      </class>
    </hibernate-mapping>
    <?xml version="1.0" encoding="utf-8" ?>
    <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="TstDBConnection.Entities" assembly="TstDBConnection">
      <class name="Leaf" table="Leaf">
        <id name="Id" column="Id">
          <generator class="guid.comb"/>
        </id>
        <property name="Name" column="Name"></property>
        <many-to-one name="Tree" class="Tree" column="TreeId" cascade="save-update" />
      </class>
    </hibernate-mapping>
    namespace TstDBConnection.Entities
    {
        public class Tree
        {
            public virtual Guid Id { get; set; }
            public virtual string Name { get; set; }
        }
    }
    namespace TstDBConnection.Entities
    {
        public class Leaf
        {
            public virtual Guid Id { get; set; }
            public virtual string Name { get; set; }
            public virtual Tree Tree { get; set; }
        }
    }
            public static void TestMany2One(ISessionFactory sessionFactory)
            {
                using (ISession session = sessionFactory.OpenSession())
                {
                    Tree tree = new Tree() { Name = "Big Tree" };
                    Leaf leaf = new Leaf() { Tree = tree, Name = "Leaf A for Big Tree" };
                    session.Save(leaf);
                    session.Flush();
    
                    var query = from leafT in session.Query<Leaf>() select leafT;
                    IList<Leaf> employees = query.ToList();
                }
            }
            static void Main(string[] args)
            {
                log4net.Config.XmlConfigurator.Configure(); // log4net
                Configuration configuration = new Configuration();
                configuration.Configure();
                ISessionFactory sessionFactory = configuration.BuildSessionFactory();
    
                TestMany2One(sessionFactory);
    
                sessionFactory.Close();
            }

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  • 原文地址:https://www.cnblogs.com/webglcn/p/2673427.html
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