public StructuralType()
{
dataProperties = new List<DataProperty>();
custom = new CustomEntityMetaData();
}
public string GetCustomMetaData(DbContext dbContext)
{
var customMetaData = new CustomMetaData();
Type type = dbContext.GetType();
// Get all DbSets from DbContext.
List<PropertyInfo> propertyInfos = type.GetProperties().Where(p => p.PropertyType.Name.Equals("DbSet`1")).ToList();
// Proces DbSets.
foreach (PropertyInfo propertyInfo in propertyInfos)
{
var structuralType = new StructuralType();
// Proces Entity.
Type entityType = propertyInfo.PropertyType.GenericTypeArguments[0];
structuralType.@namespace = entityType.Namespace;
structuralType.shortName = entityType.Name;
// Get all entity validation attributes (Attribute must implement IEntityValidator).
IEnumerable<Attribute> entityAttributes = entityType.GetCustomAttributes().Where(x => x is IEntityValidator);
// Proces entity validation attributes.
foreach (Attribute entityAttribute in entityAttributes)
{
// Add entity validation attributes to custom metadata.
var metaData = new CustomEntityMetaData();
structuralType.custom.validators.Add(entityAttribute as IEntityValidator);
}
// Get all fields (SQL Server columns) per Entity (SQL Server Table).
PropertyInfo[] epis = entityType.GetProperties();
// Proces entity properties.
foreach (PropertyInfo epi in epis)
{
var dataProperty = new DataProperty
{
nameOnServer = epi.Name
};
if (epi.Name.Equals("Id", StringComparison.InvariantCultureIgnoreCase))
{
dataProperty.isPartOfKey = true;
}
// Get all field validation attributes.
IEnumerable<Attribute> epiAttributes = epi.GetCustomAttributes();
// Proces field validation attributes.
foreach (Attribute epiAttribute in epiAttributes)
{
dataProperty.custom.validators.Add(epiAttribute);
}
structuralType.dataProperties.Add(dataProperty);
}
customMetaData.structuralTypes.Add(structuralType);
}
return JsonConvert.SerializeObject(customMetaData);
}