how to access a list with External content Type. I have permission problems if I try to do it with SP.RequestExecutor like explained in this article. The author suggests "package your External Content Type in the SPAPP as well"
But how? Have you got any advice?
One of the new things about the External List in SharePoint 2013 is the ability to create external content types that are scoped at the app level in SharePoint 2013. In other words Business Connectivity Data models can be scoped to apps for SharePoint so you don’t have to deploy External Content Type to the Farm and you don’t have to involve an administrator in order to access Business Connectivity Service in the Farm. Farm level External Content Types work great for farm solutions but this approach is not applicable for apps in SharePoint 2013 as app is an isolated. So another reason for adding an app-scoped external content type is to provide access to external data from an individual app. For Apps, BDC model is stored in a file in a document library rather than in BDC metadata store. When the app is run SharePoint uses FileBackedMetdataCataog to read metadata from this file into in-memory BDC runtime which can be read by an external list then. This BDC runtime can work with ECTs based on MS SQL, WCF/Web services and OData . Custom connectors and .net assembly connectors cannot be used along with this runtime BDC and hence with App level ECTs.
See these links for more info: http://blogs.msdn.com/b/officeapps/archive/2012/10/24/using-an-odata-service-in-apps-for-sharepoint.aspx
