public static Dictionary <ID, ID> GetRecommendedCategories([NotNull] Item item)
{
Assert.ArgumentNotNull(item, "item");
var field = item.Fields[TaxonomyFields.RecommendedCategories];
if (field.HasValue)
{
return(ClassificationField.Parse(field.Value));
}
Dictionary <ID, ID> weights = ClassificationField.Parse(StringUtil.GetString(field.GetStandardValue()));
foreach (var pair in ClassificationField.Parse(GetInheritedRecommendedCategories(item)))
{
weights[pair.Key] = pair.Value;
}
return(weights);
}
public static Dictionary <ID, RelationInfo> GetAllCategories([NotNull] Item item, [NotNull] string value)
{
Assert.ArgumentNotNull(item, "item");
Assert.ArgumentNotNull(value, "value");
Dictionary <ID, RelationInfo> result;
if (string.IsNullOrEmpty(value))
{
result = GetRecommendedCategories(item).ToDictionary(
pair => pair.Key, pair => new RelationInfo
{
Category = pair.Key,
RelatedCategory = new List <ID> {
ID.Null
},
Calculated = true,
Weight = Convert.ToSingle(item.Database.GetItem(pair.Value)["Weight"]),
ConflictCategory = GetConflictIDs(item.Database.GetItem(pair.Value)["ConflictTags"]).ToList()
});
}
else
{
result = ClassificationField.Parse(value).ToDictionary(
pair => pair.Key,
pair =>
{
return(new RelationInfo
{
Category = pair.Key,
RelatedCategory = new List <ID> {
ID.Null
},
Calculated = false,
Weight = Convert.ToSingle(item.Database.GetItem(pair.Value)["Weight"]),
ConflictCategory = GetConflictIDs(item.Database.GetItem(pair.Value)["ConflictTags"]).ToList()
});
});
}
var queue = new Queue <RelationInfo>(result.Values);
while (queue.Count > 0)
{
RelationInfo info = queue.Dequeue();
var innerItem = item.Database.GetItem(info.Category);
if (innerItem == null)
{
continue;
}
var category = new CategoryItem(innerItem);
var parentCategory = category.Parent;
if (parentCategory == null)
{
continue;
}
RelationInfo parentInfo;
if (result.TryGetValue(parentCategory.ID, out parentInfo))
{
int entry = parentInfo.RelatedCategory.Count;
float nWeight = (float)Math.Sqrt(parentCategory.RelatedWithChildren * category.RelatedToParent) *
info.Weight;
parentInfo.Weight = (float)Math.Pow(parentInfo.Weight, entry);
parentInfo.Weight = (float)Math.Pow(parentInfo.Weight * nWeight, 1.0 / (entry + 1));
parentInfo.RelatedCategory.Add(category.ID);
}
else
{
parentInfo = new RelationInfo
{
Category = parentCategory.ID,
RelatedCategory = new List <ID> {
category.ID
},
Calculated = true,
Weight =
(float)Math.Sqrt(parentCategory.RelatedWithChildren * category.RelatedToParent) * info.Weight
};
result[parentInfo.Category] = parentInfo;
}
queue.Enqueue(parentInfo);
}
return(result);
}
