/// <summary>
/// This method will invoke the Breezer.WebApi.EFContextProvider extract the csdl fot the type
/// </summary>
/// <param name="type">The type to extract the csdl for</param>
/// <returns>The metadata, or an empty string</returns>
/// <remarks>
/// When using a DbFirst approach EF thwros two kind of exceptions:
/// 1. InvalidOperationException is there is no connection string for the DbContext we are working on.
/// 2. UnintentionalCodeFirstException if it finds the connection string for the DbContext.
/// UnintentionalCodeFirstException inherits from InvalidOperationException
/// </remarks>
private static string GetMetadataFromType(Type type)
{
try
{
if (type.BaseType == typeof(System.Data.Entity.DbContext) || type == typeof(ObjectContext)) //project is using EF6
{
var providerType = typeof(EFContextProvider <>).MakeGenericType(type);
var provider = (ContextProvider)Activator.CreateInstance(providerType);
var metadata = provider.Metadata();
return(metadata);
}
else if (type.BaseType == typeof(Microsoft.EntityFrameworkCore.DbContext)) //project is using EF Core
{
var provider = (Microsoft.EntityFrameworkCore.DbContext)Activator.CreateInstance(type);
var pm = new EFPersistenceManager <Microsoft.EntityFrameworkCore.DbContext>(provider);
var metadata = pm.Metadata();
return(metadata);
}
else
{
Console.WriteLine("Could not interpret database context");
return(null);
}
}
//catch (InvalidOperationException iex) // This is might be because we have a DbFirst DbContext, so let's try it out.
//{
// try {
// return EFContextProvider<object>.GetMetadataFromDbFirstAssembly(type.Assembly, Options.ResourcePrefix);
// }
// catch (Exception ex) {
// Console.WriteLine("An exception was thrown while processing the dbfirst assembly {0}. {1}", type.Assembly.FullName, ex);
// }
//}
catch (Exception ex)
{
Console.WriteLine("An exception was thrown while processing {0}. {1}", type.FullName, ex);
}
return(string.Empty);
}
//breeze specific methods
public string Metadata()
{
return(_persistenceManager.Metadata());
}