LINQ to SQL DBML Semantic Model

Question

I'm planning to write an tool which would import dbml file and spit out an MDL file for migration purposes and such. To do this, I obviously have to read this dbml file into some kind of semantic model to do transformations.

I tried to use XmlMappingSource, but first it failed because it expects the XML namespace of a file to be http://schemas.microsoft.com/linqtosql/mapping/2007, whereas I had http://schemas.microsoft.com/linqtosql/dbml/2007. After I changed the namespace to read .../mapping/2007, XmlMappingSource started to complain about all kinds of unrecognized attributes.

Is there any object model to represent the structure of a dbml file?

Answer 1

Being no expert, but having had somewhat of the same problem...

When validating dbml files, XmlMappingSource uses (I think...at least close ;-)
DbmlSchema.xsd, so perhaps either tamper with the existing one, or make you own mappingsource?

This article may help (or may not...not quite sure I get your question)