INSERT语句使用HiLO与FOREIGN KEY约束冲突

Question

尝试保存对象GridView和GridColumns时出现以下错误

INSERT语句与FOREIGN KEY约束“FK_GridColumn_GridView”冲突。冲突发生在数据库“HighCore”，表“UserProfile.GridView”，列'Id'。

Id列未使用身份规范，而是使用hilo生成

我使用以下映射

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
                   assembly="HighCore.Portal.Domain"
                   namespace="HighCore.Portal.Domain.Entities" >
  <class name="GridView"  table="GridView" schema="UserProfile" >
    <id name="Id" unsaved-value="0">
      <generator class="hilo">
        <param name="table">Core.nHibernateUniqueKey</param>
        <param name="column">NextHi</param>
        <param name="max_lo">10</param>
        <param name="where">[Table] = 'GridView' and [Schema]='UserProfile'</param>
      </generator>
    </id> 
    <property name="EntityTypeName"/>
    <property name="ViewName"/>
    <set name="Columns" table="GridColumn" schema="UserProfile" lazy="false" cascade="all-delete-orphan">
      <key column="GridViewId" not-null="true"  />
      <one-to-many class="GridColumn"/>
    </set>
  </class>
</hibernate-mapping>

和

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
                   assembly="HighCore.Portal.Domain"
                   namespace="HighCore.Portal.Domain.Entities" >
  <class name="GridColumn"  table="GridColumn" schema="UserProfile" >
    <id name="Id" unsaved-value="0">
      <generator class="hilo">
        <param name="table">Core.nHibernateUniqueKey</param>
        <param name="column">NextHi</param>
        <param name="max_lo">10</param>
        <param name="where">[Table] = 'GridColumn' and [Schema]='UserProfile'</param>
      </generator>
    </id>

    <component name="Group" class="GroupGridColumn" lazy="false">
      <property name="Index" column="GroupIndex"/>
      <property name="IsDescendingOrder" column="IsGroupDescendingOrder"/>
    </component>

    <component name="InnerFilter" class="GridColumnFilter" lazy="false">
      <many-to-one name="CompositeFilterInfo" class="CompositeFilterInfo" cascade="all-delete-orphan">
        <column name="FilterInfoId"/>
      </many-to-one>
      <set name="DistinctFilterValues" table="DistinctFilterValue" schema="UserProfile" cascade="all-delete-orphan" inverse="true">
        <key column="GridColumnId" not-null="true" />
        <one-to-many class="DistinctFilterValue"/>
      </set>
    </component>

    <property name="Member"/>
    <property name="Index" column="ColumnIndex"/>
      <property name="IsDescendingOrder" />
    <property name="Hidden" />



  </class>
</hibernate-mapping>

保存gridview的代码

    Session.BeginTransaction();
    Session.SaveOrUpdate(entity);           
    Session.Transaction.Commit();