未映射Id时,按Id列表加载实体的正确方法

Question

我有以下代码

string idName = builder.IdentifierName;
Disjunction disjunction = Restrictions.Disjunction();
IList ids = new ArrayList(entityInfos.Length);
foreach (var entityInfo in entityInfos)
{
    ids.Add(entityInfo .Id);
}
disjunction.Add(Restrictions.In(idName, ids));
criteria.Add(disjunction);
criteria.List();

(我还没写过,它是来自NHibernate.Search的简化代码)

值idName是正确的("Id").

在我的映射中,我没有将Id映射到实体属性,它只是DB:

<id column="Id" type="int">
  <generator class="native" />
</id>

当我运行代码时,它会抛出异常:

[QueryException: could not resolve property: Id of: MyType]
   NHibernate.Persister.Entity.AbstractPropertyMapping.ToType(String propertyName) +326
   NHibernate.Loader.Criteria.CriteriaQueryTranslator.GetTypeUsingProjection(ICriteria subcriteria, String propertyName) +416
   NHibernate.Criterion.InExpression.AssertPropertyIsNotCollection(ICriteriaQuery criteriaQuery, ICriteria criteria) +41
   NHibernate.Criterion.InExpression.ToSqlString(ICriteria criteria, ICriteriaQuery criteriaQuery, IDictionary`2 enabledFilters) +49
   NHibernate.Criterion.Junction.ToSqlString(ICriteria criteria, ICriteriaQuery criteriaQuery, IDictionary`2 enabledFilters) +448
   NHibernate.Loader.Criteria.CriteriaQueryTranslator.GetWhereCondition(IDictionary`2 enabledFilters) +354
   NHibernate.Loader.Criteria.CriteriaJoinWalker..ctor(IOuterJoinLoadable persister, CriteriaQueryTranslator translator, ISessionFactoryImplementor factory, ICriteria criteria, String rootEntityName, IDictionary`2 enabledFilters) +516
   NHibernate.Loader.Criteria.CriteriaLoader..ctor(IOuterJoinLoadable persister, ISessionFactoryImplementor factory, CriteriaImpl rootCriteria, String rootEntityName, IDictionary`2 enabledFilters) +220
   NHibernate.Impl.SessionImpl.List(CriteriaImpl criteria, IList results) +364
   NHibernate.Impl.CriteriaImpl.List(IList results) +63
   NHibernate.Impl.CriteriaImpl.List() +46

创建限制和条件的正确方法是什么,以便Id即使未映射也可以进行搜索？

Answer 1

试试吧IdEq.它需要另一个分离.

Disjunction idsRestriction = Restrictions.Disjunction();
entityInfo
  .Select(x => x.Id)
  .ToList()
  .ForEach(id => idsRestriction.Add(Restriction.IdEq(id)));
disjunction.Add(idsRestriction);

注意:这会产生类似的东西(id = 1 OR id = 2 OR id = 3 ...)而不是(id IN (1, 2, 3).

百分之百确定它是否有效,但应该如此.