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Linq to NHibernate wrapper issue using where statement


Linq to NHibernate wrapper issue using where statement

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Linq to NHibernate wrapper issue using where statement
Tag : chash , By : ChaseVoid
Date : January 10 2021, 01:47 PM


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Linq.NHibernate problem with OR statement


Tag : linq , By : Laques
Date : March 29 2020, 07:55 AM
this one helps. Ok, here's the solution!
I'm using PredicateBuilder from this website: PredicateBuilder
var expr = PredicateBuilder.False<Audit>();

foreach(CodedValue codedValue in auditEventIds)
{
  CodedValue cv = codedValue;
  expr = expr.Or(a => (a.EventId.Code == cv.Code) && (a.EventId.CodeSystemName == cv.CodeSystemName));
}

itemQuery = itemQuery.Where(expr);

How to check query statement in Linq to NHibernate?


Tag : .net , By : obijywk
Date : March 29 2020, 07:55 AM
like below fixes the issue You could either configure log4net or use an SQL Profiler to see what's actually sent to the database. Yet another option (if you are willing to spend a few bucks) is to checkout Ayende's excellent tool.

SQL IN statement in Linq for NHibernate


Tag : linq , By : Grace Jones
Date : March 29 2020, 07:55 AM
Any of those help The NHibernate LINQ provider is limited when it comes to the IN clause. It seems to only work with collections where T is a simple type, e.g. List or List.
This works in NHibernate 3.1 (not tested in earlier versions):
var asd = ResultIdsAndSymbols.ToLookup(x => x.Symbol, y => y.ResultID);

foreach (var qwe in asd)
{
    List<int> list = qwe.ToList();
    var Numbers = (from t in Session.Query<TableName>()
                 where list.Contains(t.ResultID)
                 select t.Number).ToList();
}

Case statement in NHibernate / EF Linq


Tag : sql , By : todor
Date : March 29 2020, 07:55 AM
I wish did fix the issue. What will be the equivalent of following SQL statement in Linq? I'm specifically looking on how to replace CASE statements in Linq expression. , This should help you out
var query = from l in context.info_log
            from a in context.application_info
            where l.app_id == a.app_id
            where l.level_nm == "ERROR" || l.level_nm == "FATAL"
            group l by new { a.app_id, a.app_nm } into lg
            select new
            {
              Id = lg.Key.app_id,
              Name = lg.Key.app_nm,
              Error = lg.Where(x => x.level_nm == "ERROR").Count(),
              Fatal = lg.Where(x => x.level_nm == "FATAL").Count(),
            };

How to set timeout for NHibernate LINQ statement


Tag : chash-4.0 , By : Chris Hubbard
Date : March 29 2020, 07:55 AM
To fix the issue you can do Nhibernate has extended the IQueryable and added a few methods https://github.com/nhibernate/nhibernate-core/blob/master/src/NHibernate/Linq/LinqExtensionMethods.cs
var query = (from c in Session.Query<Puppy>()).Timeout(12);
var query = (from c in Session.Query<Puppy>());

query.Timeout(456);
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