/// <param name="allowSystemProperties">Allows path to end with a C# property that does not have a representation in the DSL model (ID property or the Guid property used for a Reference).</param>
public static ValueOrError <PropertyInfo> GetPropertyByPath(DataStructureInfo source, string path, IDslModel existingConcepts, bool allowSystemProperties = true)
{
if (path.Contains(" "))
{
return(ValueOrError.CreateError("The path contains a space character."));
}
if (string.IsNullOrEmpty(path))
{
return(ValueOrError.CreateError("The path is empty."));
}
var propertyNames = path.Split('.');
var referenceNames = propertyNames.Take(propertyNames.Count() - 1).ToArray();
var lastPropertyName = propertyNames[propertyNames.Count() - 1];
ValueOrError <DataStructureInfo> selectedDataStructure = source;
foreach (var referenceName in referenceNames)
{
selectedDataStructure = NavigateToNextDataStructure(selectedDataStructure.Value, referenceName, existingConcepts);
if (selectedDataStructure.IsError)
{
return(ValueOrError.CreateError(selectedDataStructure.Error));
}
}
PropertyInfo selectedProperty = FindProperty(existingConcepts, selectedDataStructure.Value, lastPropertyName);
if (allowSystemProperties && selectedProperty == null && lastPropertyName == "ID")
{
return new GuidPropertyInfo {
DataStructure = selectedDataStructure.Value, Name = "ID"
}
}
;
if (allowSystemProperties && selectedProperty == null && lastPropertyName.EndsWith("ID"))
{
string referenceName = lastPropertyName.Substring(0, lastPropertyName.Length - 2);
var referencePrototype = new PropertyInfo {
DataStructure = selectedDataStructure.Value, Name = referenceName
};
if (existingConcepts.FindByKey(referencePrototype.GetKey()) != null)
{
return new GuidPropertyInfo {
DataStructure = selectedDataStructure.Value, Name = lastPropertyName
}
}
;
}
if (selectedProperty == null)
{
return(ValueOrError.CreateError("There is no property '" + lastPropertyName + "' on " + selectedDataStructure.Value.GetUserDescription() + "."));
}
return(selectedProperty);
}
