/// <summary>
/// Retrieves all objects of type U and their retrospective keys whence given the key for type T
/// </summary>
/// <typeparam name="T">The type of the sorce object</typeparam>
/// <typeparam name="U">The type of the related object</typeparam>
/// <param name="store">The underlying store</param>
/// <param name="keyT">The key of the source object</param>
/// <param name="transformer"></param>
/// <returns></returns>
public static IEnumerable <KeyValuePair <string, U> > GetRelatedFor <T, U>(this IKVStore store, Key keyT,
ITypeStringTransformer transformer = null)
{
var tr = transformer ?? new ForeignKeyTypeStringTransformer();
var keys = store.GetRelatedKeysFor <T, U>(keyT);
return(keys.Select(key => new KeyValuePair <string, U>(key, store.Get <U>(key))));
}
/// <summary>
/// Clears all relationships in both directtions between two types of objects connected to the source key.
/// </summary>
/// <typeparam name="T">The type of the sorce object</typeparam>
/// <typeparam name="U">The type of the related object</typeparam>
/// <param name="store">The underlying store</param>
/// <param name="keyT">The key of the source object</param>
/// <param name="transformer"></param>
public static void ClearRelationships <T, U>(this IKVStore store, Key keyT,
ITypeStringTransformer transformer = null)
{
var tr = transformer ?? new ForeignKeyTypeStringTransformer();
var keys = store.GetRelatedKeysFor <T, U>(keyT, tr);
foreach (var keyU in keys)
{
store.RemoveRelationship <T, U>(keyT, keyU, tr);
}
}