[英]How do I use automapper for objects with multiple XmlElementAttributes?
我在從.xsd為.cs文件中生成的對象設置automapper時遇到問題。
當對象具有多個屬性時,不確定如何解決問題,如下所示:
一直在看TypeConverters等,但不確定如何正確設置它。 一直在使用automapper並且沒有任何問題,只要沒有多個屬性連接到一個成員。
public partial class customerInfo {
private object itemField;
/// <remarks/>
[System.Xml.Serialization.XmlElementAttribute("customerInfoBasic", typeof(customerInfoBasic))]
[System.Xml.Serialization.XmlElementAttribute("customerInfoSimple", typeof(customerInfoSimple))]
[System.Xml.Serialization.XmlElementAttribute("customerInfoEnhanced", typeof(customerInfoEnhanced))]
public object Item {
get {
return this.itemField;
}
set {
this.itemField = value;
}
}
}
public partial class customerInfoBasic{
private string nameField;
/// <remarks/>
public string name {
get {
return this.nameField;
}
set {
this.nameField= value;
}
}
}
public partial class customerInfoSimple{
private string nameField;
private string idField;
/// <remarks/>
public string name {
get {
return this.nameField;
}
set {
this.nameField= value;
}
}
public string id {
get {
return this.idField;
}
set {
this.idField= value;
}
}
}
public partial class customerInfoEnhanced{
private string nameField;
private string idField;
private string ageField;
/// <remarks/>
public string name {
get {
return this.nameField;
}
set {
this.nameField= value;
}
}
public string id {
get {
return this.idField;
}
set {
this.idField= value;
}
}
public string age {
get {
return this.ageField;
}
set {
this.ageField= value;
}
}
}
我遇到的問題是我不知道如何設置它,以便根據“信息”中的某些值正確映射customerInfo。
例如,如果“Info”包含“age”和“id”,則應將其映射到customerInfoEnhanced等。
public static void AddSessionTransformationMappings(IMapperConfiguration cfg)
{
cfg.AllowNullCollections = true;
cfg.CreateMap<IEnumerable<Info>, customerInfoList>()
.ForMember(x => x.customerInfo, x => x.MapFrom(y => y));
cfg.CreateMap<Info, customerInfo>()
.ForMember(x => x.Item, x => x.MapFrom(y => y));
cfg.CreateMap<Info, customerInfoBasic>()
.ForMember(x => x.Name, x => x.MapFrom(y => y.name));
cfg.CreateMap<Info, customerInfoSimple>()
.ForMember(x => x.Name, x => x.MapFrom(y => y.name))
.ForMember(x => x.Id, x => x.MapFrom(y => y.id));
cfg.CreateMap<Info, customerInfoEnhanced>()
.ForMember(x => x.Name, x => x.MapFrom(y => y))
.ForMember(x => x.Id, x => x.MapFrom(y => y.id))
.ForMember(x => x.Age, x => x.MapFrom(y => y.age));
}
這是序列化器的代碼:
var output = provider.Transform(new List<Info> { input });
customerInfoList actual = null;
XmlSerializer serializer = new XmlSerializer(typeof(customerInfoList));
using (MemoryStream ms = new MemoryStream())
{
serializer.Serialize(ms, output);
ms.Position = 0;
actual = (customerInfoList)serializer.Deserialize(ms);
}
如果我設置.ForMember(x => x.customerInfo, x => x.MapFrom(y => (Object)null));
代碼工作,“實際”給我一個item = null的列表,所以我知道問題是在customerInfo中映射“Item”。
我希望映射器映射到正確的類,現在我得到Missing類型映射或“Info is not expected。使用XmlInclude或SoapInclude屬性指定靜態未知的類型。
真的很感激如何解決這個問題的一些指示!
解決它是為了我自己的需要,如果其他人遇到同樣的問題解決方案。
對我來說,解決方案是使用ResolveUsing而不是MapFrom來獲取具有多個標記名稱的特定屬性,並使用Mapper.Map以及針對不同情況的正確類。
完整代碼如下所示:
public static void AddSessionTransformationMappings(IMapperConfiguration cfg)
{
cfg.AllowNullCollections = true;
cfg.CreateMap<IEnumerable<Info>, customerInfoList>()
.ForMember(x => x.customerInfo, x => x.MapFrom(y => y));
cfg.CreateMap<Info, customerInfo>()
.ForMember(x => x.Item, x => x.ResolveUsing(y => CustomerInfoLevel(y)));
cfg.CreateMap<Info, customerInfoBasic>()
.ForMember(x => x.Name, x => x.MapFrom(y => y.name));
cfg.CreateMap<Info, customerInfoSimple>()
.ForMember(x => x.Name, x => x.MapFrom(y => y.name))
.ForMember(x => x.Id, x => x.MapFrom(y => y.id));
cfg.CreateMap<Info, customerInfoEnhanced>()
.ForMember(x => x.Name, x => x.MapFrom(y => y.name))
.ForMember(x => x.Id, x => x.MapFrom(y => y.id))
.ForMember(x => x.Age, x => x.MapFrom(y => y.age));
}
private static Object CustomerInfoLevel(Info info)
{
if (info.age != null)
{
return Mapper.Map<customerInfoEnhanced>(info);
}
else if (info.id != null)
{
return Mapper.Map<customerInfoSimple>(info);
}
else
{
return Mapper.Map<customerInfoBasic>(info);
}
}
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