private void BuildDTOObjectCollections(RESTModel.PersistentObject dto, ERModel.PersistentObject real)
{
Type dtoType = dto.GetType();
var collectionProps = from x in dtoType.GetProperties()
where x.IsDefined(typeof(ObjectCollectionAttribute), false)
select x;
foreach (var collectionProp in collectionProps)
{
PropertyInfo realCollectionProp = real.GetType().GetProperty(collectionProp.Name);
var realItems = realCollectionProp.GetValue(real, null) as IList;
if (realItems == null)
{
throw new InvalidOperationException(String.Format("Real object's object collection property {0} is not IList", realCollectionProp.GetType()));
}
var items = collectionProp.GetValue(dto, null) as IList;
if (items == null)
{
throw new InvalidOperationException(String.Format("DTO's object collection property {0} is not IList", collectionProp.GetType()));
}
foreach (ERModel.PersistentObject itemReal in realItems)
{
var itemDTO = GetDTO(itemReal);
items.Add(itemDTO);
}
}
}
private void BuildRealObjectProperties(ERModel.PersistentObject real, RESTModel.PersistentObject dto, ISession session)
{
// TODO: Consider scenario when real object does not exists but should be created from dto,
// which is sent with the current dto, and can be found somewhere in the hierarchy.
Type dtoType = dto.GetType();
var objectProps = from x in dtoType.GetProperties()
where x.IsDefined(typeof(ObjectPropertyAttribute), false)
select x;
foreach (var propDTO in objectProps)
{
// No checks, since it's guaranteed that it is defined, and only once.
var attr = propDTO.GetCustomAttributes(typeof(ObjectPropertyAttribute), false)[0] as ObjectPropertyAttribute;
// TODO: this just cuts an Id at the end.
// In case more sophisticated logic is required, it should be possible to set name as a property of ObjectPropertyAttribute.
var realPropName = propDTO.Name.Substring(0, propDTO.Name.Length - 2);
var propReal = real.GetType().GetProperty(realPropName);
// If object does not exist, assign null. If property is not nullable, we'll get a database error.
var obj = session.Get(attr.ObjectType, propDTO.GetValue(dto, null));
propReal.SetValue(real, obj, null);
}
}
private void BuildDTOCalculatedProperties(RESTModel.PersistentObject dto, ERModel.PersistentObject real)
{
Type dtoType = dto.GetType();
var calcProps = from x in dtoType.GetProperties()
where x.IsDefined(typeof(CalculatedPropertyAttribute), false)
select x;
foreach (var propDTO in calcProps)
{
// No checks, since it's guaranteed that it is defined, and only once.
var attr = propDTO.GetCustomAttributes(typeof(CalculatedPropertyAttribute), false)[0] as CalculatedPropertyAttribute;
object currentObject = real;
var propChain = attr.PropertyChain.Split('.');
foreach (string propName in propChain)
{
var propReal = currentObject.GetType().GetProperty(propName);
if (propReal == null)
{
throw new InvalidOperationException(String.Format("Object {0} does not have property {1}.", currentObject.GetType().ToString(), propName));
}
currentObject = propReal.GetValue(currentObject, null);
if (currentObject == null)
{
break;
}
}
propDTO.SetValue(dto, currentObject, null);
}
}
private void AssembleDTOFromRealObject(RESTModel.PersistentObject dto, ERModel.PersistentObject real)
{
BuildDTOSimpleProperties(dto, real);
BuildDTOCalculatedProperties(dto, real);
BuildDTOObjectProperties(dto, real);
BuildDTOObjectViewProperties(dto, real);
BuildDTOParentObjectProperties(dto, real);
BuildDTOObjectCollections(dto, real);
}
private void BuildRealSimpleProperties(ERModel.PersistentObject real, RESTModel.PersistentObject dto, ISession session)
{
Type dtoType = dto.GetType();
var simpleProps = from x in dtoType.GetProperties()
where x.IsDefined(typeof(SimplePropertyAttribute), false)
select x;
foreach (var propDTO in simpleProps)
{
var propReal = real.GetType().GetProperty(propDTO.Name);
propReal.SetValue(real, propDTO.GetValue(dto, null), null);
}
}
private void BuildDTOObjectViewProperties(RESTModel.PersistentObject dto, ERModel.PersistentObject real)
{
Type dtoType = dto.GetType();
var objectViewProps = from x in dtoType.GetProperties()
where x.IsDefined(typeof(ObjectViewPropertyAttribute), false)
select x;
foreach (var propDTO in objectViewProps)
{
var propReal = real.GetType().GetProperty(propDTO.Name);
var obj = propReal.GetValue(real, null) as ERModel.PersistentObject;
propDTO.SetValue(dto, GetDTO(obj), null);
}
}
/// <summary>
/// Returns DTO assembled from the real object.
/// </summary>
/// <param name="real">The real object.</param>
/// <returns>DTO.</returns>
public RESTModel.PersistentObject GetDTO(ERModel.PersistentObject real)
{
if (real == null)
{
return(null);
}
var handle = Activator.CreateInstance(
typeof(RESTModel.PersistentObject).Assembly.FullName,
typeof(RESTModel.PersistentObject).Namespace + "." + real.GetType().Name.Replace("Proxy", String.Empty)); // TODO: is there any better way to get the name?
var dto = handle.Unwrap() as RESTModel.PersistentObject;
dto.Id = real.Id;
AssembleDTOFromRealObject(dto, real);
return(dto);
}
private void AssembleRealObjectFromDTO(ERModel.PersistentObject real, RESTModel.PersistentObject dto, ISession session, bool isNew)
{
if (!BypassValidation)
{
var error = new Validator().Validate(dto);
if (error != null)
{
throw new ValidationException(error.ToString());
}
}
BuildRealSimpleProperties(real, dto, session);
BuildRealObjectProperties(real, dto, session);
if (isNew)
{
session.Save(real);
}
BuildRealObjectCollections(real, dto, session);
}
private void BuildDTOAnyObjectProperties(RESTModel.PersistentObject dto, ERModel.PersistentObject real, Type AttributeType)
{
Type dtoType = dto.GetType();
var objectProps = from x in dtoType.GetProperties()
where x.IsDefined(AttributeType, false)
select x;
foreach (var propDTO in objectProps)
{
// TODO: this just cuts an Id at the end.
// In case more sophisticated logic is required, it should be possible to set name as a property of ObjectPropertyAttribute.
var realPropName = propDTO.Name.Substring(0, propDTO.Name.Length - 2);
var propReal = real.GetType().GetProperty(realPropName);
var obj = propReal.GetValue(real, null) as ERModel.PersistentObject;
if (obj == null)
{
propDTO.SetValue(dto, Guid.Empty, null);
}
else
{
propDTO.SetValue(dto, obj.Id, null);
}
}
}
private void BuildRealObjectCollections(ERModel.PersistentObject real, RESTModel.PersistentObject dto, ISession session)
{
Type dtoType = dto.GetType();
var collectionProps = from x in dtoType.GetProperties()
where x.IsDefined(typeof(ObjectCollectionAttribute), false)
select x;
foreach (var collectionProp in collectionProps)
{
// No checks, since it's guaranteed that it is defined, and only once.
var attr = collectionProp.GetCustomAttributes(typeof(ObjectCollectionAttribute), false)[0] as ObjectCollectionAttribute;
PropertyInfo realCollectionProp = real.GetType().GetProperty(collectionProp.Name);
var realItems = realCollectionProp.GetValue(real, null) as IList;
if (realItems == null)
{
throw new InvalidOperationException(String.Format("Real object's object collection property {0} is not IList", realCollectionProp.GetType()));
}
var items = collectionProp.GetValue(dto, null) as IList;
if (items == null)
{
throw new InvalidOperationException(String.Format("DTO's object collection property {0} is not IList", collectionProp.GetType()));
}
var realItemsDictionary = new Dictionary <Guid, ERModel.PersistentObject>();
foreach (ERModel.PersistentObject itemReal in realItems)
{
realItemsDictionary.Add(itemReal.Id, itemReal);
}
foreach (RESTModel.PersistentObject itemDTO in items)
{
dynamic itemReal;
bool isNew = false;
if (realItemsDictionary.ContainsKey(itemDTO.Id))
{
// Update in the collection
itemReal = realItemsDictionary[itemDTO.Id];
realItemsDictionary.Remove(itemDTO.Id);
}
else
{
// Look if exists detached
itemReal = session.Get(itemDTO.PersistentType, itemDTO.Id);
if (itemReal == null)
{
// Insert
itemReal = Activator.CreateInstance(itemDTO.PersistentType);
itemReal.Id = itemDTO.Id;
isNew = true;
}
// Attach
realItems.Add(itemReal);
}
// Update link to parent
if (!String.IsNullOrWhiteSpace(attr.ParentProperty))
{
var parentProp = itemDTO.PersistentType.GetProperty(attr.ParentProperty);
if (parentProp == null)
{
throw new InvalidOperationException(
String.Format("Object collection mapping error. Type {0} does not have property {1}",
itemDTO.PersistentType.ToString(),
attr.ParentProperty));
}
parentProp.SetValue(itemReal, real, null);
}
AssembleRealObjectFromDTO(itemReal, itemDTO, session, isNew);
}
foreach (var objectReal in realItemsDictionary.Values)
{
// Detach
realItems.Remove(objectReal);
if (attr.DeletionBehavior == ObjectCollectionDeletionBehavior.Delete)
{
// Delete
session.Delete(objectReal);
}
}
}
}
private void BuildDTOParentObjectProperties(RESTModel.PersistentObject dto, ERModel.PersistentObject real)
{
BuildDTOAnyObjectProperties(dto, real, typeof(ParentObjectAttribute));
}
