JonathanMagnan
commented
5 years ago Hello @Jaap-van-Hengstum ,
We tried on our side and everything works as expected.
However, the exception message gives us some hint. We have some idea to reproduce it but we want to make sure we will fix your case.
Do you think you could provide us the SQL generated by our library by using SQL Profiler?
Here is the code we tried:
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.Data.Entity;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
using Z.BulkOperations;
namespace Z.EntityFramework.Extensions.Lab
{
public partial class Form_Request_ManyToMany_ReadOnly : Form
{
public Form_Request_ManyToMany_ReadOnly()
{
InitializeComponent();
// CLEAR
{
using (var context = new CurrentContext())
{
context.DiscountRules.RemoveRange(context.DiscountRules);
context.CostTypes.RemoveRange(context.CostTypes);
context.SaveChanges();
}
}
// SEED
{
using (var context = new CurrentContext())
{
for (int i = 0; i < 11; i++)
{
context.CostTypes.Add(new CostType() {ColumnInt = i});
}
context.SaveChanges();
}
}
// TEST
{
using (var context = new CurrentContext())
{
var costTypes = context.CostTypes.ToList();
var discountRules = new List<DiscountRule>();
{
// Create 11 rules
for (int i = 0; i < 11; i++)
{
discountRules.Add(new DiscountRule() { ColumnInt = 1, CostTypes = new List<CostType>()});
}
}
// Populate many to many list
{
for (int i = 0; i < costTypes.Count; i++)
{
var costType = costTypes[i];
var discountRuleToAdd = discountRules.Take(i).ToList();
costType.DiscountRules = discountRuleToAdd;
discountRuleToAdd.ForEach(x => x.CostTypes.Add(costType));
}
}
//{
// // MUST throw unique index exception
// context.BulkInsert(discountRules, options =>
// {
// options.IncludeGraph = true;
// });
//}
{
// WORK with and without proxy
var task = context.BulkInsertAsync(discountRules, options =>
{
options.IncludeGraph = true;
options.UnsafeMode = true;
options.IncludeGraphOperationBuilder = operation =>
{
if (operation is BulkOperation<CostType>)
{
var bulk = (BulkOperation<CostType>)operation;
bulk.IsReadOnly = true;
}
};
});
Task.WaitAll(task);
}
}
}
}
public class CurrentContext : DbContext
{
public CurrentContext()
: base("CodeFirstEntities")
{
}
public virtual DbSet<DiscountRule> DiscountRules { get; set; }
public virtual DbSet<CostType> CostTypes { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<DiscountRule>()
.HasMany(x => x.CostTypes)
.WithMany(x => x.DiscountRules)
.Map(c =>
{
c.MapLeftKey("DiscountRule");
c.MapRightKey("CostType");
c.ToTable("ImplicitLinkTable");
});
base.OnModelCreating(modelBuilder);
}
}
public class DiscountRule
{
public int Id { get; set; }
public int ColumnInt { get; set; }
public virtual List<CostType> CostTypes { get; set; }
}
public class CostType
{
public int Id { get; set; }
[Index(IsUnique = true)]
public int ColumnInt { get; set; }
public virtual List<DiscountRule> DiscountRules { get; set; }
}
}
}
riley-van-hengstum
I have this entity class which has a many-to-many relation with an implicit link table:
I want to bulk insert a set of
DiscountRulesand include the implicit link table but not theCostTypetarget table.If I don't specifiy a
IncludeGraphOperationBuilderoption, like this:I get the error
"Cannot insert duplicate key row in object 'dbo.CostTypes' with unique index 'IX_CostType_Value'. The duplicate key value is (0)."So I try to add a
IncludeGraphOperationBuilderoption to exclude theCostTypetable:But then I get the exception:
Which I don't know what to do with.
Can
BulkInserthandle a many-to-many relation and include the implicit link table but not the target table?