// public IEdmModel Transform(RdmDataModel model, IDictionary<string, RdmDataModel> referencedModels)
// {
// return TryTransform(model, referencedModels, out var result) ? result : default;
// }
public bool TryTransform(RdmDataModel model, IDictionary <string, RdmDataModel> referencedModels, out IEdmModel edmModel)
{
// The transformation essentially happens in the phases
// 1) create the type environment with all external and pre-defined types
// 2) add "stubs" for each defined type. these "stubs" have no properties or base types yet.
// the EDM model elements are added to the environment and the resulting RDM model
// 3) add the properties, base types etc. to the stubs
// The three phases are necessary since the graph of types is potentially a circular graph.
try
{
var sw = Stopwatch.StartNew();
// create the environment based on the RDM model's types
var env = new TypeEnvironment(logger);
// adds the dependencies to allow to resolve the imported types.
env.AddReferences(model, referencedModels ?? new Dictionary <string, RdmDataModel>());
// create the model that is going to be filled on by the builder;
var result = new EdmModel();
// build out the model types
var builder = new ModelBuilder(logger, env);
builder.Build(model, result);
edmModel = result;
logger.LogInfo("transformation time: {0}", sw.Elapsed);
return(true);
}
catch (TransformationException ex)
{
logger.LogError(ex, "error transforming rsdl model {0}", model.Namespace.NamespaceName);
edmModel = default;
return(false);
}
}
public ModelBuilder(ILogger logger, TypeEnvironment env)
{
this.logger = logger;
this.env = env;
this.annotationBuilder = new AnnotationBuilder(logger);
}