如何使用Fluent NHibernate自动映射组件集合?
所有我的实体和值对象都实现了标记接口如何使用Fluent NHibernate自动映射组件集合?,nhibernate,fluent-nhibernate,components,automapping,value-objects,Nhibernate,Fluent Nhibernate,Components,Automapping,Value Objects,所有我的实体和值对象都实现了标记接口IEntity和IValueObject。我已将它们设置为组件,如下所示: public override bool IsComponent(Type type) { return typeof(IValueObject).IsAssignableFrom(type); } public override bool ShouldMap(Type type) { return typeof(IEntity).IsAssignableFrom(t
IEntity
和IValueObject
。我已将它们设置为组件,如下所示:
public override bool IsComponent(Type type)
{
return typeof(IValueObject).IsAssignableFrom(type);
}
public override bool ShouldMap(Type type)
{
return typeof(IEntity).IsAssignableFrom(type) || typeof(IValueObject).IsAssignableFrom(type);
}
不幸的是,这似乎不允许将具有值对象集合的实体自动映射为组件集合。例如:
public class MyEntity : IEntity
{
public IList<MyValueObject> Objects { get; set; }
}
public class MyValueObject : IValueObject
{
public string Name { get; set; }
public string Value { get; set; }
}
我不想做的是对每个类手动执行这些重写,并一次又一次地写出value对象的每个属性
return base.ShouldMap(member) && IsCollectionOfComponents(member)
public void Map(ClassMappingBase classMap, Member member)
{ ... }
public class MyMappingConfiguration : DefaultAutomappingConfiguration
{
public override IEnumerable<IAutomappingStep> GetMappingSteps(AutoMapper mapper, IConventionFinder conventionFinder)
{
var steps = base.GetMappingSteps(mapper, conventionFinder);
var finalSteps = steps.Where(c => c.GetType() != typeof(FluentNHibernate.Automapping.Steps.HasManyToManyStep)).ToList();
var idx = finalSteps.IndexOf(steps.Where(c => c.GetType() == typeof(PropertyStep)).First());
finalSteps.Insert(idx + 1, new MyCustomHasManyStep(this));
return finalSteps;
}
}
公共类MyMappingConfiguration:DefaultAutomappingConfiguration
{
公共覆盖IEnumerable GetMappingSteps(自动映射映射器、IConventionFinder conventionFinder)
{
var steps=base.GetMappingSteps(映射器、conventionFinder);
var finalSteps=steps.Where(c=>c.GetType()!=typeof(FluentNHibernate.Automapping.steps.HasManyToManyStep)).ToList();
var idx=finalSteps.IndexOf(steps.Where(c=>c.GetType()==typeof(PropertyStep)).First());
最后一步插入(idx+1,新的MyCustomHasManyStep(this));
返回最后一步;
}
}
注意:您还可以获取HasManyStep.cs的原始源代码,并将其复制到您的项目中,以介绍您的自定义逻辑。这是一个极好的答案,它让我对nhibernate自动映射有了很好的了解。
public class MyMappingConfiguration : DefaultAutomappingConfiguration
{
public override IEnumerable<IAutomappingStep> GetMappingSteps(AutoMapper mapper, IConventionFinder conventionFinder)
{
var steps = base.GetMappingSteps(mapper, conventionFinder);
var finalSteps = steps.Where(c => c.GetType() != typeof(FluentNHibernate.Automapping.Steps.HasManyToManyStep)).ToList();
var idx = finalSteps.IndexOf(steps.Where(c => c.GetType() == typeof(PropertyStep)).First());
finalSteps.Insert(idx + 1, new MyCustomHasManyStep(this));
return finalSteps;
}
}