/// <summary>
/// Extracts an item from a given instance by delegating the call to the wrapped mapping.
/// </summary>
/// <param name="instanceSource">The source of instances providing the <paramref name="instance"/>.</param>
/// <param name="instance">The instance to extract the item from.</param>
/// <returns>The extracted item.</returns>
public TItem GetItem(SplitInstanceSource <TInstanceSource> instanceSource, TInstance instance)
{
if (instanceSource == null)
{
throw new ArgumentNullException(nameof(instanceSource));
}
return(this.mapping.GetItem(instanceSource.InstanceSource, instance));
}
/// <summary>
/// Extracts a rating from a given instance by delegating the call to the wrapped mapping.
/// </summary>
/// <param name="instanceSource">The instance source providing the <paramref name="instance"/>.</param>
/// <param name="instance">The instance to extract the rating from.</param>
/// <returns>The extracted rating.</returns>
public TRating GetRating(SplitInstanceSource <TInstanceSource> instanceSource, TInstance instance)
{
if (instanceSource == null)
{
throw new ArgumentNullException("instanceSource");
}
return(this.mapping.GetRating(instanceSource.InstanceSource, instance));
}
/// <summary>
/// Retrieves a list of instances from a given instance source.
/// Dependent on <see cref="SplitInstanceSource{TInstanceSource}.IsTrainingSet"/>, the instances of
/// the training or test set are returned.
/// </summary>
/// <param name="instanceSource">The source to retrieve instances from.</param>
/// <returns>The list of retrieved instances.</returns>
public IEnumerable <TInstance> GetInstances(SplitInstanceSource <TInstanceSource> instanceSource)
{
if (instanceSource == null)
{
throw new ArgumentNullException(nameof(instanceSource));
}
this.UpdateCachedInstances(instanceSource.InstanceSource);
return(instanceSource.IsTrainingSet ? this.cachedTrainingSetInstances : this.cachedTestSetInstances);
}