我遇到以下情况,我无法正确映射:
我通过调用camunda api收到以下对象的列表。
public class CamundaTask
{
public string FormKey { get; set; }
public string Id { get; set; }
public string Name { get; set; }
...
}
我想将其映射到我的代码(ContactUpdateTask
或OrganisationAquisitionTask
)中的特定任务,具体取决于formkey。
以下是我的架构:
public class BaseTask
{
public virtual string TaskType { get; set; }
public string Id { get; set; }
public int Priority { get; set; }
public string Key { get; set; }
...
}
public abstract class ProcessTask<TContext> : BaseTask
{
public TContext TaskContext { get; set; }
}
public class ContactUpdateContext
{
public Guid PersonId { get; set; }
public string FullName { get; set; }
}
public class OrganisationAquisitionContext
{
public Guid OrganisationId { get; set; }
public string Name { get; set; }
}
public class ContactUpdateTask : ProcessTask<ContactUpdateContext>
{
public override string TaskType { get => "UpdateContact"; }
}
public class OrganisationAquisitionTask : ProcessTask<OrganisationAquisitionContext>
{
public override string TaskType { get => "OrganisationAquisition"; }
}
我知道如何处理简单的继承和自动化,但是整个TContext让我失望了。 这是我到目前为止,但它产生以下错误:&#34;映射器未初始化。使用适当的配置调用Initialize。&#34;
CreateMap<ContactUpdateTask, ProcessTask<ContactUpdateContext>>().ReverseMap();
CreateMap<ContactValidationTask, ProcessTask<OrganisationAquisitionTask>>().ReverseMap();
CreateMap<OrganisationAquisitionTask, ProcessTask<ContactValidationTask>>().ReverseMap();
CreateMap<BaseTask, CamundaTask>()
.ForMember(t => t.FormKey, opt => opt.MapFrom(p => p.TaskType))
.ForMember(t => t.Assignee, opt => opt.MapFrom(p => p.Owner))
.ForMember(t => t.Id, opt => opt.MapFrom(p => p.Key))
.ForAllOtherMembers(opt => opt.Ignore());
CreateMap<CamundaTask, ContactUpdateTask>()
.ForMember(t => t.TaskType, opt => opt.MapFrom(p => p.FormKey))
.ForMember(t => t.Owner, opt => opt.MapFrom(p => p.Assignee))
.ForMember(t => t.Key, opt => opt.MapFrom(p => p.Id))
.ForAllOtherMembers(opt => opt.Ignore());
CreateMap<CamundaTask, ContactValidationTask>()
.ForMember(t => t.TaskType, opt => opt.MapFrom(p => p.FormKey))
.ForMember(t => t.Owner, opt => opt.MapFrom(p => p.Assignee))
.ForMember(t => t.Key, opt => opt.MapFrom(p => p.Id))
.ForAllOtherMembers(opt => opt.Ignore());
CreateMap<CamundaTask, OrganisationAquisitionTask>()
.ForMember(t => t.TaskType, opt => opt.MapFrom(p => p.FormKey))
.ForMember(t => t.Owner, opt => opt.MapFrom(p => p.Assignee))
.ForMember(t => t.Key, opt => opt.MapFrom(p => p.Id))
.ForAllOtherMembers(opt => opt.Ignore());
CreateMap<CamundaTask, BaseTask>()
.ConstructUsing((CamundaTask task) =>
{
switch (task.FormKey.ToLower())
{
case "updateorganization":
return Mapper.Map<ContactUpdateTask>(task);
case "contactValidation":
return Mapper.Map<ContactValidationTask>(task);
case "organizationacquisition":
return Mapper.Map<OrganisationAquisitionTask>(task);
}
return Mapper.Map<BaseTask>(task);
})
.ForMember(t => t.TaskType, opt => opt.MapFrom(p => p.FormKey))
.ForMember(t => t.Owner, opt => opt.MapFrom(p => p.Assignee))
.ForMember(t => t.Key, opt => opt.MapFrom(p => p.Id))
.ForAllOtherMembers(opt => opt.Ignore());
我用以下代码行映射:
var tasks = _mapper.Map<IEnumerable<BaseTask>>(camundaTasks)
camundaTasks
的类型为IEnumerable<CamundaTask>
执行映射的正确方法是什么,以便我的任务列表包含ContactUpdateTask
或OrganisationAquisitionTask
的对象,具体取决于CamundaTask
的formkey?
答案 0 :(得分:2)
所以这里发生的是你以非静态的方式初始化Automapper(原帖不明确,但我可以扣除,因为我的评论似乎已经解决了你的问题),但是你静态地使用Automapper在ConstructUsing方法中。
有两个解决方案:
1)静态使用Automapper
Mapper.Initialize(cfg=> cfg.CreateMap<CamundaTask, BaseTask>());
2)使用ResolutionContext
.ConstructUsing((CamundaTask task, ResolutionContext context) =>
{
switch (task.FormKey.ToLower())
{
case "updateorganization":
return context.Mapper.Map<ContactUpdateTask>(task);
case "contactValidation":
return context.Mapper.Map<ContactValidationTask>(task);
case "organizationacquisition":
return context.Mapper.Map<OrganisationAquisitionTask>(task);
}
return context.Mapper.Map<BaseTask>(task);
})