NHibernate 尝试在删除操作中将 ID 更新为 null

Question

起初我有这些实体：Persona、Paciente、Alergia、Cita 和 Consulta。当我尝试删除 Persona 时，问题就来了。我的数据库看起来像这样：

我目前正在与 Persona 和 Paciente 合作。这些是它们的映射类:

    <?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping assembly="Odontologia General Admin" namespace="Odontologia_General_Admin.Persistence.Entidades" xmlns="urn:nhibernate-mapping-2.2">
  <class name="Persona" table="persona" lazy="true" >
    <id name="Cipersona" column="ciPersona" />
    <bag name="Cliente" cascade="all-delete-orphan">
      <key column="ciCliente"/>
      <one-to-many class="Cliente" />
    </bag>
    <bag name="Paciente" cascade="all-delete-orphan">
      <key column="ciPaciente"/>
      <one-to-many class="Paciente" />
    </bag>
  </class>
</hibernate-mapping>

    <?xml version="1.0" encoding="utf-8"?>
<hibernate-mapping assembly="Odontologia General Admin" namespace="Odontologia_General_Admin.Persistence.Entidades" xmlns="urn:nhibernate-mapping-2.2">
  <class name="Paciente" table="paciente" lazy="true" >
    <id name="Cipaciente" column="ciPaciente" />
    <bag name="CitasPaciente" table="cita" lazy="true" inverse="true" cascade="all-delete-orphan">
      <key column="ciPaciente" />
      <one-to-many class="Cita"/>
    </bag>
    <bag name="ConsultasPaciente" table="consulta" lazy="true" inverse="true" cascade="all-delete-orphan">
      <key column="ciPaciente" />
      <one-to-many class="Consulta" />
    </bag>
    <bag name="AlergiasPaciente" table="alergia_paciente" lazy="true" cascade="all-delete-orphan" inverse="true" >
      <key column="ciPaciente"></key>
      <many-to-many column="idAlergia" class="Alergia" />
    </bag>
  </class>
</hibernate-mapping>

他们的实体：

public class Persona : Entidad {
    public Persona() { Paciente = new List<Paciente>();
    Cliente = new List<Cliente>();
    public virtual int Cipersona { get; set; }
    [Browsable(false)]
    public virtual IList<Cliente> Cliente { get; set; }
    [Browsable(false)]
    public virtual IList<Paciente> Paciente { get; set; }
}

    public class Paciente : Entidad
{
    public Paciente() { CitasPaciente = new List<Cita>();}
    public virtual int Cipaciente { get; set; }
    public virtual IList<Alergia> AlergiasPaciente { get; set; }
    public virtual IList<Cita> CitasPaciente{ get; set; }
    public virtual IList<Consulta> ConsultasPaciente { get; set; }
}

当我尝试删除 Persona 并且级联以某种方式尝试更新 paciente 并将其 ID 设置为 null 时出现问题

UPDATE paciente SET ciPaciente = null WHERE ciPaciente = ?p0

并且 SQL 抛出异常，因为该列不能为空。

Answer 1

在包映射中，您需要更新="false"

Answer 2

将 not-null="true" 和 update="false" 添加到 Paciente 集合映射：

<bag name="Paciente" cascade="all-delete-orphan">
  <key column="ciPaciente" not-null="true" update="false"/>
  <one-to-many class="Paciente" />
</bag>

此外，您可能希望将集合映射为逆向。

NHibernate 尝试在删除操作中将 ID 更新为 null

NHibernate trying to update ID to null on a delete operation

c#

xml

nhibernate

visual-studio-2010