/// <summary>
/// Get collection of entries where the second key is equal 'name'
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public IEnumerable <KeyValuePair <KeyStruct, TValue> > this[TName name]
{
get
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
try
{
var isSuccess = _dNameId.TryGetValue(name, out var idList);
if (!isSuccess || idList.Count == 0)
{
throw new KeyNotExistsException($"Requested Key {name} - does not exist");
}
IEnumerable <KeyValuePair <KeyStruct, TValue> > resultEnumerable;
if (idList.Count == 1)
{
var strKey = new KeyStruct(idList[0], name);
resultEnumerable = _dictionary.Where(x => x.Key.Equals(strKey));
}
else // IdList contains more than 1 entries for uniq name. "A" - 1; "A" - 2; "A" - 3
{
var keyStructs = new KeyStruct[idList.Count];
for (int i = 0; i < idList.Count; i++)
{
keyStructs[i] = new KeyStruct(idList[i], name);
}
resultEnumerable = keyStructs.Select(x => new KeyValuePair <KeyStruct, TValue>(x, _dictionary[x]));
}
return(resultEnumerable);
}
catch (Exception e)
{
throw new KeyNotExistsException($"Requested Key {name} - does not exist", e);
}
}
}
/// <summary>
/// Get collection of entries where the first key is equal 'id'
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public IEnumerable <KeyValuePair <KeyStruct, TValue> > this[TId id]
{
get
{
if (id == null)
{
throw new ArgumentNullException(nameof(id));
}
try
{
var isSuccess = _dIdName.TryGetValue(id, out var namesList);
if (!isSuccess || namesList.Count == 0)
{
throw new KeyNotExistsException($"Requested Key {id} - does not exist");
}
IEnumerable <KeyValuePair <KeyStruct, TValue> > resultEnumerable;
if (namesList.Count == 1)
{
var strKey = new KeyStruct(id, namesList[0]);
resultEnumerable = _dictionary.Where(x => x.Key.Equals(strKey));
}
else // NamesList contains more than 1 entries for uniq id. 1-"A" 1-"B" 1-"C"
{
var keyStructs = new KeyStruct[namesList.Count];
for (int i = 0; i < namesList.Count; i++)
{
keyStructs[i] = new KeyStruct(id, namesList[i]);
}
resultEnumerable = keyStructs.Select(x => new KeyValuePair <KeyStruct, TValue>(x, _dictionary[x]));
}
return(resultEnumerable);
}
catch (Exception e)
{
throw new KeyNotExistsException($"Requested Key {id} - does not exist", e);
}
}
}
