/// <summary>
/// Gets vocabulary annotation that binds to a term and a qualifier from the metadata annotation dictionary in current data service context for a specified methodInfo.
/// </summary>
/// <param name="context">The data service context.</param>
/// <param name="methodInfo">The specified annotated methodInfo.</param>
/// <param name="term">The term name.</param>
/// <param name="qualifier">The qualifier name.</param>
/// <returns>The vocabulary annotation that binds to a term and a qualifier for the specified annotated methodInfo.</returns>
private static IEdmVocabularyAnnotation GetOrInsertCachedMetadataAnnotationForMethodInfo(DataServiceContext context, MethodInfo methodInfo, string term, string qualifier)
{
IEdmModel serviceModel = context.Format.ServiceModel;
if (serviceModel == null)
{
return(null);
}
IEdmVocabularyAnnotation edmValueAnnotation = GetCachedMetadataAnnotation(context, methodInfo, term, qualifier);
if (edmValueAnnotation != null)
{
return(edmValueAnnotation);
}
IEdmVocabularyAnnotatable edmVocabularyAnnotatable = context.GetEdmOperationOrOperationImport(methodInfo);
if (edmVocabularyAnnotatable == null)
{
return(null);
}
var edmOperationImport = edmVocabularyAnnotatable as IEdmOperationImport;
IEnumerable <IEdmVocabularyAnnotation> edmValueAnnotations = null;
if (edmOperationImport != null)
{
edmValueAnnotations = serviceModel.FindVocabularyAnnotations <IEdmVocabularyAnnotation>(edmOperationImport, term, qualifier)
.Where(a => a.Qualifier == qualifier);
if (!edmValueAnnotations.Any())
{
edmVocabularyAnnotatable = edmOperationImport.Operation;
}
}
if (edmValueAnnotations == null || !edmValueAnnotations.Any())
{
edmValueAnnotations = serviceModel.FindVocabularyAnnotations <IEdmVocabularyAnnotation>(edmVocabularyAnnotatable, term, qualifier)
.Where(a => a.Qualifier == qualifier);
}
if (edmValueAnnotations != null && edmValueAnnotations.Count() == 1)
{
edmValueAnnotation = edmValueAnnotations.Single();
InsertMetadataAnnotation(context, methodInfo, edmValueAnnotation);
return(edmValueAnnotation);
}
return(null);
}
