MapsterMapper
ConstructUsing for generic types doesn't work
TypeAdapterConfig<PagedList<ExampleEntity>, PagedList<ExampleDto>>.ForType().ConstructUsing(dest => new PagedList<ExampleDto>(new List<ExampleDto>(), 1, 1)); = > its work
TypeAdapterConfig<PagedList<Type>, PagedList<Type>>.ForType().ConstructUsing(dest => new PagedList<Type>(new List<Type>(), 1, 1)); it doesn't work and throw Exception
Exception => System.InvalidOperationException : No default constructor for type 'PagedList`1', please use 'ConstructUsing' or 'MapWith'
pagedlist constructors;
`public PagedList(IEnumerable<T> items, int page, int size)
: this(items.AsQueryable(), page, size)
{
}
public PagedList(IEnumerable<T> items, int page, int size, int itemCount)
{
BindItems(page, size, itemCount);
Items = items;
}
public PagedList(IQueryable<T> items, int page, int size)
{
var itemCount = items.Count();
BindItems(page, size, itemCount);
Items = items.PagedBy(page, size).ToList();
} `
@omerercelik You can set Full sample of this case. propably i found the source of this problem )
@andrerav This seems to be related to the reason why the tests I commented out in this do not work #646 . the same error is generated there. I made a simplified version of the bypass previously installed in the class adapter and then there was no error.
TypeAdapterConfig<PagedList<Type>, PagedList<Type>>.ForType().ConstructUsing(dest => new PagedList<Type>(new List<Type>(), 1, 1));it doesn't work and throw Exception
If Type is System.Type? then as far as I understand it cannot be created. This can only be obtained. typeof(), .Gettype()
valid Generic definition possible must look like as typeof(PagedList<>), and mapping from this and mapping for this should be supported endofpage
TypeAdapterConfig.GlobalSettings.ForType(typeof(GenericPoco<>), typeof(GenericDto<>))
.Map("value", "Value");
TypeAdapterConfig.GlobalSettings.ForType(typeof(GenericPoco<>), typeof(GenericDto<>)) Does not have ConstructUsing definition.
@DocSvartz When I use this syntax i can not use ConstructUsing method.
How can I use contructusing method in generic classes? Or How can i skip this error when generic class have one more constructor?
Exception => System.InvalidOperationException : No default constructor for type 'PagedList`1', please use 'ConstructUsing' or 'MapWith'
Even if you bring it to a case that in theory should work.
You get IQueryable from the conversion function and there will always be an error Instead of the data you need
[TestClass]
public class WhenGenericMapping
{
[TestMethod]
public void TestMappingGeneric()
{
TypeAdapterConfig
.GlobalSettings
.ForDestinationType(typeof(SamplePageList<>))
.MapToConstructor(true);
SamplePageList<string> _SourcePageList = new(new[] { "1234", "222" }.ToList(), 2, 2);
var _DeconstructPageList = _SourcePageList.Adapt<PocoActivatorPageList<string>>();
var _result = _DeconstructPageList.Adapt<SamplePageList<string>>();
_DeconstructPageList.Items.ToArray()[0].ShouldBe("1234");
_DeconstructPageList.Items.ToArray()[1].ShouldBe("222");
_result.Items.ToArray()[0].ShouldBe("1234"); // Error
_result.Items.ToArray()[1].ShouldBe("222"); // Error
}
}
class PocoActivatorPageList<T>
{
public IEnumerable<T> Items { get; set; }
public int Size { get; set; }
public int Page { get; set; }
}
class SamplePageList<T>
{
public IQueryable<T> Items { get; private set; }
public int Size { get; private set; }
public int Page { get; private set; }
public int ItemCount { get; private set; }
public SamplePageList(IEnumerable<T> items, int page, int size)
: this(items.AsQueryable(), page, size)
{
// this target
}
public SamplePageList(IEnumerable<T> items, int page, int size, int itemCount)
{
/// Not used
}
public SamplePageList(IQueryable<T> items, int page, int size)
{
Items = items;
ItemCount = items.Count();
Page = page;
Size = size;
}
}
Error Message:
System.NotImplementedException: The method or operation is not implemented.
Trace Stack:
GeneratedType_1.GetEnumerator()
LargeArrayBuilder`1.AddRange(IEnumerable`1 items)
EnumerableHelpers.ToArray[T](IEnumerable`1 source)
Enumerable.ToArray[TSource](IEnumerable`1 source)
WhenGenericMapping.TestMappingGeneric()
From this File Mapster.Utils.DynamicTypeGenerator
@andrerav For some reason, RecordType is involved there again))) for interface IQueryable
@andrerav Apparently it is necessary to allocate a separate InterfaceAdapter (Base logic work from all Interface) handler with private setters (uses from RecordTypeAdapter). I'll try this as step 3 of fix #537. In continuation of this PR #646.
@omerercelik This working From This
@andrerav I managed to separate the processing of interfaces without public setters from the processing of RecordTypes)
But IQueryable now not supported
[TestClass]
public class WhenGenericMapping
{
[TestMethod]
public void TestMappingGeneric()
{
TypeAdapterConfig
.GlobalSettings
.ForType(typeof(SamplePageList<>), typeof(SamplePageList<>))
.ShallowCopyForSameType(true);
SamplePageList<string> _SourcePageList = new(new[] { "1234", "222" }.ToList(), 2, 2);
SamplePageList<int> _SourcePageList2 = new(new[] { 555, 333 }.ToList(), 2, 2);
var c = _SourcePageList.Adapt(_SourcePageList2);
c.Items.ToArray()[0].ShouldBe(1234);
c.Items.ToArray()[1].ShouldBe(222);
}
}
class PocoActivatorPageList<T>
{
public IEnumerable<T> Items { get; set; }
public int Size { get; set; }
public int Page { get; set; }
}
class SamplePageList<T>
{
public IEnumerable<T> Items { get; private set; }
public int Size { get; private set; }
public int Page { get; private set; }
public int ItemCount { get; private set; }
public SamplePageList(IEnumerable<T> items, int page, int size)
{
Items = items;
ItemCount = items.Count();
Page = page;
Size = size;
}
public SamplePageList(IEnumerable<T> items, int page, int size, int itemCount)
{
/// Not used
}
public SamplePageList(IQueryable<T> items, int page, int size)
{
Items = items;
ItemCount = items.Count();
Page = page;
Size = size;
}
}