/// <summary>
/// 获取 DbContext 构造函数
/// </summary>
/// <param name="dbContextProvider"></param>
/// <param name="dbContextConfiguration"></param>
/// <returns></returns>
private ConstructorInfo GetDbContextConstructor(IDbContextProvider dbContextProvider, DbContextConfiguration dbContextConfiguration)
{
if (_dbContextConstructorDict.TryGetValue(dbContextProvider.DbContextType, out ConstructorInfo constructor))
{
return(constructor);
}
var constructors = dbContextProvider.DbContextType.GetConstructors();
constructor = constructors.Where(o =>
{
var parameterInfos = o.GetParameters();
var dbContextOptionsParameter = parameterInfos
.FirstOrDefault(parameter => parameter.ParameterType == dbContextConfiguration.DbContextOptions.Options.GetType().BaseType);
return(dbContextOptionsParameter != null);
}).FirstOrDefault();
if (constructor == null)
{
throw new ArgumentException($"The DbContextType {dbContextProvider.DbContextType.FullName} does not have a constructor with a DbContextOptions argument");
}
_dbContextConstructorDict[dbContextProvider.DbContextType] = constructor;
return(constructor);
}