/// <summary>
/// Joins together the results from several patterns.
/// </summary>
/// <typeparam name="TResult">The type of the elements in the result sequence, obtained from the specified patterns.</typeparam>
/// <param name="provider">Query provider used to construct the IQbservable<T> data source.</param>
/// <param name="plans">A series of plans created by use of the Then operator on patterns.</param>
/// <returns>An observable sequence with the results from matching several patterns.</returns>
/// <exception cref="ArgumentNullException"><paramref name="provider"/> or <paramref name="plans"/> is null.</exception>
public static IQbservable <TResult> When <TResult>(this IQbservableProvider provider, params QueryablePlan <TResult>[] plans)
{
if (provider == null)
{
throw new ArgumentNullException(nameof(provider));
}
if (plans == null)
{
throw new ArgumentNullException(nameof(plans));
}
return(provider.CreateQuery <TResult>(
Expression.Call(
null,
#if CRIPPLED_REFLECTION
InfoOf(() => Qbservable.When <TResult>(default(IQbservableProvider), default(QueryablePlan <TResult>[]))),
#else
((MethodInfo)MethodInfo.GetCurrentMethod()).MakeGenericMethod(typeof(TResult)),
#endif
Expression.Constant(provider, typeof(IQbservableProvider)),
Expression.NewArrayInit(
typeof(QueryablePlan <TResult>),
plans.Select(p => p.Expression)
)
)
));
}
/// <summary>
/// Joins together the results from several patterns.
/// </summary>
/// <typeparam name="TResult">The type of the elements in the result sequence, obtained from the specified patterns.</typeparam>
/// <param name="provider">Query provider used to construct the IQbservable<T> data source.</param>
/// <param name="plans">A series of plans created by use of the Then operator on patterns.</param>
/// <returns>An observable sequence with the results form matching several patterns.</returns>
/// <exception cref="ArgumentNullException"><paramref name="provider"/> or <paramref name="plans"/> is null.</exception>
public static IQbservable <TResult> When <TResult>(this IQbservableProvider provider, IEnumerable <QueryablePlan <TResult> > plans)
{
if (provider == null)
{
throw new ArgumentNullException("provider");
}
if (plans == null)
{
throw new ArgumentNullException("plans");
}
return(provider.CreateQuery <TResult>(
Expression.Call(
null,
#if CRIPPLED_REFLECTION
InfoOf(() => Qbservable.When <TResult>(default(IQbservableProvider), default(IEnumerable <QueryablePlan <TResult> >))),
#else
((MethodInfo)MethodInfo.GetCurrentMethod()).MakeGenericMethod(typeof(TResult)),
#endif
Expression.Constant(provider, typeof(IQbservableProvider)),
Expression.Constant(plans, typeof(IEnumerable <QueryablePlan <TResult> >))
)
));
}