/// <summary>
/// Adds the specified <paramref name="keyValuePairs" /> to the <paramref name="cache"/>
/// with their expiry set to <see cref="TimeSpan.MaxValue" /> and <see cref="ObservableCacheExpirationType" /> to <see cref="ObservableCacheExpirationType.DoNothing" />.
/// </summary>
/// <param name="cache">The cache to use.</param>
/// <param name="keyValuePairs">The key/value pairs to add.</param>
/// <param name="scheduler">Scheduler to perform the addrange action on.</param>
/// <returns>
/// An observable stream that returns an <see cref="Unit" /> for every added element of the <paramref name="keyValuePairs"/>.
/// </returns>
public static IObservable <KeyValuePair <TKey, TValue> > AddRange <TKey, TValue>(this IObservableCache <TKey, TValue> cache, IEnumerable <KeyValuePair <TKey, TValue> > keyValuePairs, IScheduler scheduler = null)
{
if (cache == null)
{
throw new ArgumentNullException(nameof(cache));
}
if (keyValuePairs == null)
{
throw new ArgumentNullException(nameof(keyValuePairs));
}
return(cache.AddRange(keyValuePairs, TimeSpan.MaxValue, ObservableCacheExpirationType.DoNothing, scheduler));
}
/// <summary>
/// Adds the specified <paramref name="keyValuePairs" /> to the <see cref="IObservableCache{TKey,TValue}" />.
/// </summary>
/// <param name="cache">The cache to use.</param>
/// <param name="keyValuePairs">The key/value pairs to add.</param>
/// <param name="expiry">The expiry of the <paramref name="keyValuePairs" />.</param>
/// <param name="expirationType">Defines how the <paramref name="keyValuePairs" /> shall expire.</param>
/// <param name="scheduler">Scheduler to perform the addrange action on.</param>
/// <returns>
/// An observable stream that returns an <see cref="Unit" /> for every added element of the <paramref name="keyValuePairs"/>.
/// </returns>
public static IObservable <KeyValuePair <TKey, TValue> > AddRange <TKey, TValue>(this IObservableCache <TKey, TValue> cache, IEnumerable <KeyValuePair <TKey, TValue> > keyValuePairs, TimeSpan expiry, ObservableCacheExpirationType expirationType = ObservableCacheExpirationType.DoNothing, IScheduler scheduler = null)
{
if (cache == null)
{
throw new ArgumentNullException(nameof(cache));
}
if (keyValuePairs == null)
{
throw new ArgumentNullException(nameof(keyValuePairs));
}
var keyValuePairsAsList = keyValuePairs.ToList();
if (keyValuePairsAsList.Count == 0)
{
return(scheduler != null
? Observable.Empty <KeyValuePair <TKey, TValue> >(scheduler)
: Observable.Empty <KeyValuePair <TKey, TValue> >());
}
return(cache.AddRange(keyValuePairsAsList.AsObservable(scheduler), expiry, expirationType, scheduler));
}