/// <summary>
/// Returns a collection with items matching the specified identifier.
/// </summary>
/// <param name="identifier">The identifier.</param>
/// <returns>A collection containing the items that match the specified identifier.</returns>
/// <exception cref="System.ArgumentNullException">The identifier is null.</exception>
public IEnumerable <ReferenceType> WithIdentifier(String identifier)
{
if (identifier == null)
{
throw new ArgumentNullException(nameof(identifier));
}
this.EnsureAliases();
this.EnsureReferences();
// match exact code
String authority = IdentifiedObject.GetAuthority(identifier);
Int32 code = IdentifiedObject.GetCode(identifier);
if (authority == Authority && this.referenceDictionary.ContainsKey(code))
{
yield return(this.referenceDictionary[code]);
}
// match contained code
foreach (ReferenceType reference in this.referenceDictionary.Values.Where(reference => reference.Identifier.IndexOf(identifier, StringComparison.OrdinalIgnoreCase) >= 0))
{
yield return(reference);
}
}
/// <summary>
/// Gets the item with the specified identifier.
/// </summary>
/// <param name="identifier">The identifier.</param>
/// <returns>The item with the specified identifier.</returns>
public ReferenceType this[String identifier]
{
get
{
if (identifier == null)
{
return(null);
}
String authority = IdentifiedObject.GetAuthority(identifier);
Int32 code = IdentifiedObject.GetCode(identifier);
if (!String.IsNullOrEmpty(authority) && authority != Authority)
{
return(null);
}
return(this.GetReference(code));
}
}
