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私のプロジェクトでは、すべてのエンティティに複合プライマリキー[systemId as long、deviceId as long、id as long]があります。エンティティを保存する前に値を手動で入力してください。 私は "コードファースト"アプローチを使い、NHibernate.Mapping.Attributes拡張機能を使ってJavaベースのHibernateのような属性を持つスキーマを定義します。NHibernateコンポジットidマッピングの問題、双方向/単方向OneToMany、ManyToOne、ManyToMany
すべてのエンティティが共有特性および機能を提供する抽象基本タイプがあります。私はdefinied
[Serializable]
[Component]
public class EntityId
{
[Property(Column = "restId", NotNull = true)]
private long systemId = 0;
[Property(NotNull = true)]
private long deviceId = 0;
[Property(NotNull = true)]
private long id = 0;
public long SystemId
{
get { return systemId; }
set { systemId = value; }
}
public long DeviceId
{
get { return deviceId; }
set { deviceId = value; }
}
public long Id
{
get { return id; }
set { id = value; }
}
}
：複合IDの後ろ
[Serializable]
public abstract class EntityBase
{
[CompositeId(0, Name = "id", ClassType = typeof(EntityId))]
[KeyProperty(1, Name = "systemId", Column = "restId")]
[KeyProperty(2, Name = "deviceId", Column = "deviceId")]
[KeyProperty(3, Name = "id", Column = "id")]
private EntityId id = new EntityId(); // this is a component, see below
[Property(Column = "isDeleted", NotNull = true)]
private bool deleted = false;
public EntityId Id
{
get { return id; }
set { id = value; }
}
public bool Deleted
{
get { return deleted; }
set { deleted = value; }
}
}
を複合主キーを表す成分は、存在しますOTMListとOTMItemと呼ばれる2つのエンティティは、相互に双方向のOneToManyとManyToOneの関連付けを持っています。
[Serializable]
[Class]
public class OTMList : EntityBase
{
[List(0, Cascade = "none", Generic = true, Lazy = CollectionLazy.True)]
[Key(1, Column = "id")]
[Index(2, Column = "id")]
[OneToMany(3, NotFound = NotFoundMode.Exception, ClassType = typeof(OTMItem))]
private IList<OTMItem> otmItems = new List<OTMItem>();
public IList<OTMItem> OTMItems
{
get { return otmItems; }
set { otmItems = value; }
}
}
[Serializable]
[Class]
public class OTMItem : EntityBase
{
[ManyToOne(0, Name = "otmList", ClassType = typeof(OTMList), Column = "OTMListId", Cascade = "none", Lazy = Laziness.Proxy)]
private OTMList otmList = null;
public OTMList OTMList
{
get { return otmList; }
set { otmList = value; }
}
}
Hibernateマッピングxmlファイルには、次の情報が含まれています。私はNHibernateはのSchemaValidatorでスキーマを検証するとき
<?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping default-access="field" auto-import="true" assembly="NHibernateTest, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" xmlns="urn:nhibernate-mapping-2.2">
<class name="NHibernateTest.ListTest.OTM.OTMList, NHibernateTest">
<composite-id class="NHibernateTest.Domain.EntityId, NHibernateTest" name="id">
<key-property name="systemId" column="restId" />
<key-property name="deviceId" column="deviceId" />
<key-property name="id" column="id" />
</composite-id>
<property name="deleted" column="isDeleted" not-null="true" />
<list name="otmItems" lazy="true" cascade="none" generic="true">
<key column="id" />
<index column="id" />
<one-to-many class="NHibernateTest.ListTest.OTM.OTMItem, NHibernateTest" not-found="exception" />
</list>
</class>
<class name="NHibernateTest.ListTest.OTM.OTMItem, NHibernateTest">
<composite-id class="NHibernateTest.Domain.EntityId, NHibernateTest" name="id">
<key-property name="systemId" column="restId" />
<key-property name="deviceId" column="deviceId" />
<key-property name="id" column="id" />
</composite-id>
<property name="deleted" column="isDeleted" not-null="true" />
<many-to-one name="otmList" class="NHibernateTest.ListTest.OTM.OTMList, NHibernateTest" column="OTMListId" cascade="none" lazy="proxy" />
</class>
</hibernate-mapping>
は、私は次の例外を取得：
Foreign key (FKF208BF0B9A2FCB3:OTMItem [OTMListId])) must have same number of columns as the referenced primary key (OTMList [restId, deviceId, id])
問題があります単方向ManyToOneまたは双方向/片方向ManyToManyの関連付けを作成しようとするときも同じです。
誰かが私を助けることができますか？ここで利用できる完全なソースコード
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