/// <summary>
/// 根据Assembly扫描所有继承IEntityTypeConfiguration<T>的配置类
/// </summary>
/// <param name="codeFirst"></param>
/// <param name="assembly"></param>
/// <param name="predicate"></param>
/// <returns></returns>
public static ICodeFirst ApplyConfigurationsFromAssembly(this ICodeFirst codeFirst, Assembly assembly, Func <Type, bool> predicate = null)
{
IEnumerable <TypeInfo> typeInfos = assembly.DefinedTypes.Where(t => !t.IsAbstract && !t.IsGenericTypeDefinition);
MethodInfo methodInfo = typeof(FreeSqlDbContextExtensions).Assembly.GetExtensionMethods(typeof(ICodeFirst))
.Single((e) => e.Name == "Entity" && e.ContainsGenericParameters);
if (methodInfo == null)
{
return(codeFirst);
}
foreach (TypeInfo constructibleType in typeInfos)
{
if (constructibleType.GetConstructor(Type.EmptyTypes) == null || predicate != null && !predicate(constructibleType))
{
continue;
}
foreach (var @interface in constructibleType.GetInterfaces())
{
if (@interface.IsGenericType && @interface.GetGenericTypeDefinition() == typeof(IEntityTypeConfiguration <>))
{
var type = @interface.GetGenericArguments().First();
var efFluentType = typeof(EfCoreTableFluent <>).MakeGenericType(type);
var actionType = typeof(Action <>).MakeGenericType(efFluentType);
//1.需要实体和Configuration配置
//codeFirst.Entity<ToDoItem>(eb =>
//{
// new ToDoItemConfiguration().Configure(eb);
//});
//2.需要实体
//Action<EfCoreTableFluent<ToDoItem>> x = new Action<EfCoreTableFluent<ToDoItem>>(e =>
//{
// object o = Activator.CreateInstance(constructibleType);
// constructibleType.GetMethod("ApplyConfiguration")?.Invoke(o, new object[1] { e });
//});
//codeFirst.Entity<ToDoItem>(x);
//3.实现动态调用泛型委托
DelegateBuilder delegateBuilder = new DelegateBuilder(constructibleType);
MethodInfo applyconfigureMethod = delegateBuilder.GetType().GetMethod("ApplyConfiguration")?.MakeGenericMethod(type);
if (applyconfigureMethod == null)
{
continue;
}
Delegate @delegate = Delegate.CreateDelegate(actionType, delegateBuilder, applyconfigureMethod);
methodInfo.MakeGenericMethod(type).Invoke(null, new object[2]
{
codeFirst,
@delegate
});
}
}
}
return(codeFirst);
}
