/// <summary>
/// Determines if at least one object with the given <paramref name="objectId"/> exists
/// in the container.
/// </summary>
/// <param name="objectId">The identifier to search for.</param>
/// <returns><see langword="true"/> if the key exists in the container; <see langword="false"/> otherwise.</returns>
/// <remarks>
/// Container-managed objects are always singletons by id and type. Therefore,
/// <paramref name="objectId"/> is not guaranteed to be unique in the container,
/// only within that pair id/type.
/// </remarks>
public bool Contains(string objectId)
{
IReadableLocator results = locator.FindBy(delegate(KeyValuePair <object, object> entry)
{
string stringKey = entry.Key as string;
if (stringKey != null && stringKey == objectId)
{
return(true);
}
DependencyResolutionLocatorKey key = entry.Key as DependencyResolutionLocatorKey;
if (key != null && key.ID == objectId)
{
return(true);
}
return(false);
});
return(results.Count > 0);
}
