为什么nhibernate 不能保存on-to-many的结构

Code

namespace EasyTalk.Module

{

    /// <summary>

    /// SiteAddress object for NHibernate mapped table 'SiteAddress'.

    /// </summary>

    [Serializable]

    public class SiteAddress

    {

        #region Member Variables

        protected string _siteid;

        protected string _alias;

        protected string _address;

        protected string _transporttype;

        protected string _description;

        protected string _iscurrent;

        protected IList<AddressAttributes> _addressattributes;

        #endregion

        #region Constructors

            

        public SiteAddress() {}

                    

        public SiteAddress(string siteid, string alias, string address, string transporttype, string description, string iscurrent) 

        {

            this._siteid= siteid;

            this._alias= alias;

            this._address= address;

            this._transporttype= transporttype;

            this._description= description;

            this._iscurrent= iscurrent;

        }



        public SiteAddress(string siteid)

        {

            this._siteid= siteid;

        }

        

        #endregion

        #region Public Properties

        public  virtual string SiteId

        {

            get { return _siteid; }

            set {_siteid= value; }

        }

        public  virtual string Alias

        {

            get { return _alias; }

            set {_alias= value; }

        }

        public  virtual string Address

        {

            get { return _address; }

            set {_address= value; }

        }

        public  virtual string TransportType

        {

            get { return _transporttype; }

            set {_transporttype= value; }

        }

        public  virtual string Description

        {

            get { return _description; }

            set {_description= value; }

        }

        public  virtual string IsCurrent

        {

            get { return _iscurrent; }

            set {_iscurrent= value; }

        }

        public  virtual IList<AddressAttributes> AddressAttributes

        {

            get { return _addressattributes; }

            set {_addressattributes= value; }

        }



        public virtual void AddItem(AddressAttributes item)

        {

            if (_addressattributes == null)

                _addressattributes = new List<AddressAttributes>();

            _addressattributes.Add(item);

        }

        #endregion

        

        #region Equals And HashCode Overrides

        /// <summary>

        /// local implementation of Equals based on unique value members

        /// </summary>

        public override bool Equals( object obj )

        {

            if( this == obj ) return true;

            if( ( obj == null ) || ( obj.GetType() != this.GetType() ) ) return false;

            SiteAddress castObj = (SiteAddress)obj;

            return ( castObj != null ) &&

            this._siteid == castObj.SiteId;

        }

        /// <summary>

        /// local implementation of GetHashCode based on unique value members

        /// </summary>

        public override int GetHashCode()

        {

            int hash = ;

            hash =  * hash * _siteid.GetHashCode();

            return hash;

        }

        #endregion

        

    }

}

Code

namespace EasyTalk.Module

{

    /// <summary>

    /// AddressAttributes object for NHibernate mapped table 'AddressAttributes'.

    /// </summary>

    [Serializable]

    public class AddressAttributes

    {

        #region Member Variables

        protected decimal _attrid;

        protected string _attributekey;

        protected string _attributevalue;

        protected string _endpointid;

        protected string _transporttype;

        #endregion

        #region Constructors

            

        public AddressAttributes() {}

                    

        public AddressAttributes(string attributekey, string attributevalue, string endpointid, string transporttype) 

        {

            this._attributekey= attributekey;

            this._attributevalue= attributevalue;

            this._endpointid= endpointid;

            this._transporttype= transporttype;

        }



        public AddressAttributes(string endpointid)

        {

            this._endpointid= endpointid;

        }

        

        #endregion

        #region Public Properties

        public  virtual decimal AttrId

        {

            get { return _attrid; }

            set {_attrid= value; }

        }

        public  virtual string AttributeKey

        {

            get { return _attributekey; }

            set {_attributekey= value; }

        }

        public  virtual string AttributeValue

        {

            get { return _attributevalue; }

            set {_attributevalue= value; }

        }

        public  virtual string EndpointId

        {

            get { return _endpointid; }

            set {_endpointid= value; }

        }

        public  virtual string TransportType

        {

            get { return _transporttype; }

            set {_transporttype= value; }

        }

        #endregion

        

        #region Equals And HashCode Overrides

        /// <summary>

        /// local implementation of Equals based on unique value members

        /// </summary>

        public override bool Equals( object obj )

        {

            if( this == obj ) return true;

            if( ( obj == null ) || ( obj.GetType() != this.GetType() ) ) return false;

            AddressAttributes castObj = (AddressAttributes)obj;

            return ( castObj != null ) &&

            this._attrid == castObj.AttrId;

        }

        /// <summary>

        /// local implementation of GetHashCode based on unique value members

        /// </summary>

        public override int GetHashCode()

        {

            int hash = ;

            hash =  * hash * _attrid.GetHashCode();

            return hash;

        }

        #endregion

        

    }

}

Code

<?xml version="1.0" encoding="utf-8"?>

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">

  <!--Build: with lujan99@usa.net Nhibernate template-->

  <class name="EasyTalk.Module.SiteAddress,EasyTalk.Module" table="SiteAddress" lazy="true">

      <id name="SiteId" column="Site_ID" type="string" unsaved-value="0">

          <generator class="assigned" />

      </id>

    <property name="Alias" column="Alias" type="string" />

    <property name="Address" column="Address" type="string" />

    <property name="TransportType" column="TransportType" type="string" />

    <property name="Description" column="Description" type="string" />

    <property name="IsCurrent" column="isCurrent" type="string" />

    <bag name="AddressAttributes"   lazy="true"   cascade="all">

      <key column="Endpoint_ID" />

      <one-to-many class="EasyTalk.Module.AddressAttributes,EasyTalk.Module" />

    </bag>

  </class>

</hibernate-mapping>

Code

<?xml version="1.0" encoding="utf-8"?>

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">

  <!--Build: with lujan99@usa.net Nhibernate template-->

  <class name="EasyTalk.Module.AddressAttributes,EasyTalk.Module" table="AddressAttributes" lazy="true">

    <id name="AttrId" column="Attr_ID" type="Decimal" unsaved-value="0">

      <generator class="native" />

    </id>

    <property name="AttributeKey" column="AttributeKey" type="string" />

    <property name="AttributeValue" column="AttributeValue" type="string" />

    <property name="EndpointId" column="Endpoint_ID" type="string" a="true" />

    <property name="TransportType" column="TransportType" type="string" />

  </class>

</hibernate-mapping>

Code

AddressAttributes s = new AddressAttributes();

        //s.Endpoints = e;

        //s.AttrId = 1002;

        s.EndpointId = "";

        s.AttributeKey = "test";

        s.AttributeValue = "test";

        s.TransportType = "msmq";

        //=====================

        //a.Endpoints.Add(e);

        a.AddItem(e);

        //e.AddressAttributes.Add(s);

        e.AddItem(s);



        SiteAddress sa = new SiteAddress();

        sa.Address = "add";

        //sa.AddItem(s);

        sa.Alias = "alias";

        sa.Description = "desc";

        sa.IsCurrent = "";

        sa.SiteId = "";

        sa.TransportType = "msmq";

        



        session.Save(sa);