/// <summary>
/// Traverses through the provided entity and returns the
/// value of the relationship on the other side of a join entity
/// (e.g. Articles.ArticleTags.Tag).
/// </summary>
public override object GetValue(object entity)
{
IEnumerable joinEntities = (IEnumerable)ThroughProperty.GetValue(entity) ?? Array.Empty <object>();
IEnumerable <object> rightEntities = joinEntities
.Cast <object>()
.Select(rightEntity => RightProperty.GetValue(rightEntity));
return(rightEntities.CopyToTypedCollection(PropertyInfo.PropertyType));
}
/// <summary>
/// Traverses through the provided resource and returns the value of the relationship on the other side of the through type. In the example described
/// above, this would be the value of "Articles.ArticleTags.Tag".
/// </summary>
public override object GetValue(object resource)
{
ArgumentGuard.NotNull(resource, nameof(resource));
object throughEntity = ThroughProperty.GetValue(resource);
if (throughEntity == null)
{
return(null);
}
IEnumerable <object> rightResources = ((IEnumerable)throughEntity).Cast <object>().Select(rightResource => RightProperty.GetValue(rightResource));
return(CollectionConverter.CopyToTypedCollection(rightResources, Property.PropertyType));
}
/// <summary>
/// Traverses through the provided resource and returns the value of the relationship on the other side of the through type.
/// In the example described above, this would be the value of "Articles.ArticleTags.Tag".
/// </summary>
public override object GetValue(object resource)
{
if (resource == null)
{
throw new ArgumentNullException(nameof(resource));
}
var throughEntity = ThroughProperty.GetValue(resource);
if (throughEntity == null)
{
return(null);
}
IEnumerable <object> rightResources = ((IEnumerable)throughEntity)
.Cast <object>()
.Select(rightResource => RightProperty.GetValue(rightResource));
return(TypeHelper.CopyToTypedCollection(rightResources, Property.PropertyType));
}