Invalid update expression exception in EntityFramework Extensions UpdateFromQuery - entity-framework-6

Question

I'm using EF 6 and Z.EntityFramework.Extensions.
The following code:
using (var context = contextFactory())
{
var modified = context.Receita.
Where(r => r.V_UID == receitaEletronica.VendaUid && r.numeroreceita == receitaEletronica.NumeroReceita).
Join(context.Tabela_Comparticipacao.
Where(t => entidades.Contains(t.ec_uid)).
Join(context.Tabela_Comparticipacao.Where(t => t.flag_elect == 1),
source => source.ec_uid,
dest => dest.ec_uid,
(source, dest) => new { Source = source, Dest = dest }),
r => r.TaCo_UID,
t => t.Source.TaCo_UID,
(r, t) => new { Receita = r, NovoTaCo = t.Dest.TaCo_UID }).
UpdateFromQuery(r => new Receita { TaCo_UID = r.NovoTaCo });
}
throws the following exception:
Message:
Test method winphar.services.receitas.ReceitasDAOTest.TestAtualizarReceitaElectronicaTaCoUidEntidadesCentralizadas threw exception:
System.Exception: Oops! Invalid update expression, the body is not a NewExpression. Please refer to the documentation to get examples about how to use this feature.
Stack Trace:
DbContextExtensions.[](IQueryable`1 , Expression`1 , Action`1 , Boolean )
DbContextExtensions.UpdateFromQuery[TEntity](IQueryable`1 query, Expression`1 updateExpression, Action`1 bulkOperationFactory)
DbContextExtensions.UpdateFromQuery[TEntity](IQueryable`1 query, Expression`1 updateExpression)
ReceitasDAO.AtualizarReceitaElectronicaTaCoUidEntidadesCentralizadas(ReceitaEletronica receitaEletronica, List`1 entidades) line 114
ReceitasDAOTest.TestAtualizarReceitaElectronicaTaCoUidEntidadesCentralizadas() line 267
What am I doing wrong?

Answer 1

I have received such error when context had different object then the one I was passing to UpdateFromQuery.
For example for context DbSet<A> I accidentally put new B()
context.A.
Where(x => x.Id == id).
UpdateFromQuery(x => new B
{
Example = exampleId
});
Hope it helps!