private static BinderResult GetEntityGeneric <T>(IDbEntity entity, IEnumerable entities, string path, string collectionPath, string indexers)
where T : class, IDbEntity
{
BinderResult result = null;
IEnumerable <T> typedEntities = entities as IEnumerable <T>;
string[] collectionEntityIndexers = indexers.Split(',');
List <Tuple <string, object> > collectionEntityKeys = new List <Tuple <string, object> >();
Type type = typeof(T);
foreach (string indexer in collectionEntityIndexers)
{
string[] keyAndValue = indexer.Split('=');
collectionEntityKeys.Add(new Tuple <string, object>(keyAndValue[0], Convert.ChangeType(keyAndValue[1], type.GetProperty(keyAndValue[0]).GetGetMethod().ReturnType, null)));
}
IDbEntity collectionEntity = typedEntities.AsQueryable().WherePrimaryKeysEqual(collectionEntityKeys.ToArray()).SingleOrDefault() as IDbEntity;
string actualPath = path;
if (collectionEntity != null)
{
actualPath = DbEntityUtilities.GenerateCollectionItemPath(collectionPath, collectionEntity.PrimaryKeys, collectionEntity.Guid);
}
result = new BinderResult(collectionEntity, path, actualPath);
return(result);
}
public static void DepthFirst(IDbEntity entity,
Type projectionType,
string path,
IDictionary <Type, ISet <string> > processedEntities,
Action <IDbEntity, string> beforeRecursionAction,
Action <IDbEntity, string, string, PropertyInfo> beforePropertyRecursionAction,
Func <IDbEntity, IEnumerable <IDbEntity>, string, string, PropertyInfo, IEnumerable <IDbEntity> > beforeCollectionRecursionAction,
Action <IDbEntity, IEnumerable <IDbEntity>, string, string, PropertyInfo> afterCollectionRecursionAction,
Action <IDbEntity, string> afterRecursionAction)
{
bool processed = !processedEntities.Add(entity.GetType(), entity.Guid);
if (processed)
{
// Prevents self-referencing entities from causing infinite loops
return;
}
beforeRecursionAction(entity, path);
IEnumerable <PropertyInfo> virtualProperties = entity.GetType().GetVirtualProperties(true, true);
virtualProperties = virtualProperties.Where(ep => projectionType.GetProperties().Any(pp => ep.Name.Equals(pp.Name)));
foreach (PropertyInfo property in virtualProperties)
{
PropertyInfo projectionProperty = projectionType.GetProperty(property.Name);
//PropertyInfo projectionProperty = property;
string propertyPath = DbEntityUtilities.GeneratePropertyPath(path, property.Name);
beforePropertyRecursionAction(entity, path, propertyPath, property);
object value = property.GetGetMethod().Invoke(entity, _emptyObjectArray);
if (value != null)
{
if (property.GetGetMethod().ReturnType.IsIEnumerable() &&
DbEntityUtilities.IsIDbEntity(property.GetGetMethod().ReturnType.GetGenericArguments()[0]))
{
IEnumerable <IDbEntity> entities = value as IEnumerable <IDbEntity>;
entities = beforeCollectionRecursionAction(entity, entities, path, propertyPath, property);
for (int i = 0; i < entities.Count(); i++)
{
DepthFirst(entities.ElementAt(i), projectionProperty.GetGetMethod().ReturnType.GetGenericArguments()[0], DbEntityUtilities.GenerateCollectionItemPath(propertyPath, entities.ElementAt(i).Guid), processedEntities, beforeRecursionAction, beforePropertyRecursionAction, beforeCollectionRecursionAction, afterCollectionRecursionAction, afterRecursionAction);
}
afterCollectionRecursionAction(entity, entities, path, propertyPath, property);
}
else if (DbEntityUtilities.IsIDbEntity(property.GetGetMethod().ReturnType))
{
DepthFirst(value as IDbEntity, projectionProperty.GetGetMethod().ReturnType, propertyPath, processedEntities, beforeRecursionAction, beforePropertyRecursionAction, beforeCollectionRecursionAction, afterCollectionRecursionAction, afterRecursionAction);
}
}
}
afterRecursionAction(entity, path);
}
