如何改进linq查询和删除in子句

Question

我有一个linq查询

var query = from record in session.Query<Record>()
                           from brwSet in session.Query<BorrowerSet>()
                           from brw in session.Query<Borrower>()
                           where 
                           brw.PrintOrder == 1 && brwSet.PrintOrder == 0
                           && record.Package.BorrowerSet.Contains( brwSet ) 
                           && brwSet.Borrower.Contains( brw )
                           select new Summary()
                           {
                               BorrowerFirstName = brw.Contact.FirstName,
                               BorrowerLastName = brw.Contact.LastName,
                               LoanPackageID = record.Id
                           };

我怎么能重写这个以消除条款中的额外内容

from brwSet in session.Query<BorrowerSet>()
from brw in session.Query<Borrower>()

我怎样才能重写这个，所以我不需要这些集合上的contains函数？

record.Package.BorrowerSet.Contains( brwSet ) && brwSet.Borrower.Contains( brw )

Answer 1

此查询没有包含。

var query = 
  from record in session.Query<Record>()
  from brwSet in record.Package.BorrowerSet
  where brwSet.PrintOrder == 0
  from brw is brwSet.Borrowers
  where brw.PrintOrder == 1
  select new Summary()
  {
    BorrowerFirstName = brw.Contact.FirstName,
    BorrowerLastName = brw.Contact.LastName,
    LoanPackageID = record.Id
  };