c# - NHibernate 不保存对象，也没有显示错误

Question

我在使用 NHibernate 将对象保存到数据库时遇到问题。程序没有抛出错误，但记录仍然不在数据库中。我也输出sql查询，但查询没有执行。

我在表“order_product”中使用复合键。表是“order”的子级。

数据库表:order_product

order_id (PK)
product_id (PK)
count
price

映射:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true">
  <class name="Service.OrderProduct, Service" lazy="true" table="order_product">
    <composite-id>
      <key-property name="productId" column="product_id" type="string"/>
      <key-property name="orderId" column="order_id" />
    </composite-id>
    <property name="count" type="int" column="count" not-null="true" />
    <property name="price" type="double" not-null="true" />
    <many-to-one name="Order"   column="order_id"   fetch="join" cascade="all"/>
  </class>
</hibernate-mapping>

C# 对象:

public class OrderProduct
{
    virtual public OrderProductPK orderProductPK { get; set; }
    virtual public int count { get; set; }
    virtual public string productId { get; set; }
    virtual public int orderId { get; set; }
    virtual public double price { get; set; }
    virtual public Order Order { get; set; }

    public override bool Equals(Object o)
    {

        OrderProduct a = o as OrderProduct;
        if (a.productId.Equals(this.productId) && a.orderId==this.orderId)
        {
            return true;
        }
        return false;
    }
    public override int GetHashCode()
    {
        int hashCode = 0;
        hashCode = hashCode ^ productId.GetHashCode() ^ orderId.GetHashCode();
        return hashCode;
    }
}
public class OrderProductPK
{
    virtual public string productId { get; set; }
    virtual public int orderId { get; set; }

}

保存代码:

OrderProduct op = new OrderProduct();
op.order_id= 133;
op.product_id = "product_key_id";
op.price = 20.4;
op.count = 10;
OpenSession().Save(op);

Answer 1

您可能需要关闭(Dispose) session 或刷新它，以使 NHibernate 将更改写入数据库。