BDC models of SP 2007 to SP 2010 Conversion
Here you can download the archive comprising an application and its source code inside. The application allows to convert simple Business Data Catalog Application Definitions to Business Data Connectivity Models. In other words, it makes BDC models of SharePoint 2007 be compatible with SharePoint 2010. For details, please read the article – SharePoint: Manually Upgrade Business Data Catalog Application Definitions to Business Data Connectivity Models.
The source code is the Visual Studio 2010 solution not using any SharePoint-related libraries.