/// <summary>
/// Converts a <see cref="T:Tridion.ContentDelivery.Taxonomies.Keyword" /> to a <see cref="T:TcmCDService.Contracts.Keyword" /> data contract.
/// </summary>
/// <param name="keyword"><see cref="T:Tridion.ContentDelivery.Taxonomies.Keyword" /></param>
/// <param name="linkingKeyword"><see cref="T:TcmCDService.Contracts.Keyword" /> from where the conversion is called.</param>
/// <returns>
/// <see cref="T:TcmCDService.Contracts.Keyword" />
/// </returns>
internal static Contracts.Keyword ToContract(this Keyword keyword, Contracts.Keyword linkingKeyword)
{
if (keyword != null)
{
Contracts.Keyword result = new Contracts.Keyword()
{
HasChildren = keyword.HasChildren,
IsAbstract = keyword.IsAbstract,
IsNavigable = keyword.IsNavigable,
IsUsedForNavigation = keyword.IsUsedForIdentification,
Depth = keyword.KeywordDepth,
Description = keyword.KeywordDescription,
Key = keyword.KeywordKey,
Left = keyword.KeywordLeft,
Meta = ToContract(keyword.KeywordMeta),
Name = keyword.KeywordName,
Right = keyword.KeywordRight,
Uri = keyword.KeywordUri,
ReferencedContentCount = keyword.ReferencedContentCount,
TaxonomyUri = keyword.TaxonomyUri,
RelatedKeywordUris = keyword.GetRelatedKeywordUris()
};
// If the parent keyword is equal to the linkingKeyword, do not recursive, but assign it manually
result.ParentKeyword = keyword
.ParentKeyword
.IsEqual(linkingKeyword) ? linkingKeyword : ToContract(keyword.ParentKeyword, result);
// Retrieve all children which are not the same as the "linking keyword"
IEnumerable <Keyword> children = keyword.KeywordChildren.OfType <Keyword>();
result.Children = children.Where(k => !k.IsEqual(linkingKeyword)).Select(k => ToContract(k, result));
// If the linking keyword is part of the children, add it manually to the children collection (To prevent recursing endlessly)
if (children.Any(k => k.IsEqual(linkingKeyword)))
{
result.Children = result.Children.Concat(new Contracts.Keyword[] { linkingKeyword });
}
IEnumerable <Keyword> parents = keyword.ParentKeywords.OfType <Keyword>();
result.ParentKeywords = parents.Where(k => !k.IsEqual(linkingKeyword)).Select(k => ToContract(k, linkingKeyword));
// If the linking keyword is part of the parents, add it manually to the parents collection (To prevent recursing endlessly)
if (parents.Any(k => k.IsEqual(linkingKeyword)))
{
result.ParentKeywords = result.ParentKeywords.Concat(new Contracts.Keyword[] { linkingKeyword });
}
return(result);
}
return(null);
}