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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if !NO_REMOTING
using System.Linq.Expressions;
using System.Reflection;
using System.Runtime.Remoting.Lifetime;
namespace System.Reactive.Linq
{
/// <summary>
/// Provides a set of static methods for exposing observable sequences through .NET Remoting.
/// </summary>
public static partial class RemotingObservable
{
#region Remotable
/// <summary>
/// Makes an observable sequence remotable, using an infinite lease for the <see cref="MarshalByRefObject"/> wrapping the source.
/// </summary>
/// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
/// <param name="source">Source sequence.</param>
/// <returns>The observable sequence that supports remote subscriptions.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Remotable", Justification = "In honor of the .NET Remoting heroes.")]
public static IObservable<TSource> Remotable<TSource>(this IObservable<TSource> source)
{
if (source == null)
throw new ArgumentNullException("source");
return Remotable_<TSource>(source);
}
/// <summary>
/// Makes an observable sequence remotable, using a controllable lease for the <see cref="MarshalByRefObject"/> wrapping the source.
/// </summary>
/// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
/// <param name="source">Source sequence.</param>
/// <param name="lease">Lease object to control lifetime of the remotable sequence. Notice null is a supported value.</param>
/// <returns>The observable sequence that supports remote subscriptions.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Remotable", Justification = "In honor of the .NET Remoting heroes.")]
public static IObservable<TSource> Remotable<TSource>(this IObservable<TSource> source, ILease lease)
{
if (source == null)
throw new ArgumentNullException("source");
return Remotable_<TSource>(source, lease);
}
/// <summary>
/// Makes an observable sequence remotable, using an infinite lease for the <see cref="MarshalByRefObject"/> wrapping the source.
/// </summary>
/// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
/// <param name="source">Source sequence.</param>
/// <returns>The observable sequence that supports remote subscriptions.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Remotable", Justification = "In honor of the .NET Remoting heroes.")]
public static IQbservable<TSource> Remotable<TSource>(this IQbservable<TSource> source)
{
if (source == null)
throw new ArgumentNullException("source");
return source.Provider.CreateQuery<TSource>(
Expression.Call(
null,
#if CRIPPLED_REFLECTION
InfoOf(() => RemotingObservable.Remotable<TSource>(default(IQbservable<TSource>))),
#else
((MethodInfo)MethodInfo.GetCurrentMethod()).MakeGenericMethod(typeof(TSource)),
#endif
source.Expression
)
);
}
/// <summary>
/// Makes an observable sequence remotable, using a controllable lease for the <see cref="MarshalByRefObject"/> wrapping the source.
/// </summary>
/// <typeparam name="TSource">The type of the elements in the source sequence.</typeparam>
/// <param name="source">Source sequence.</param>
/// <param name="lease">Lease object to control lifetime of the remotable sequence. Notice null is a supported value.</param>
/// <returns>The observable sequence that supports remote subscriptions.</returns>
/// <exception cref="ArgumentNullException"><paramref name="source"/> is null.</exception>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Remotable", Justification = "In honor of the .NET Remoting heroes.")]
public static IQbservable<TSource> Remotable<TSource>(this IQbservable<TSource> source, ILease lease)
{
if (source == null)
throw new ArgumentNullException("source");
return source.Provider.CreateQuery<TSource>(
Expression.Call(
null,
#if CRIPPLED_REFLECTION
InfoOf(() => RemotingObservable.Remotable<TSource>(default(IQbservable<TSource>), default(ILease))),
#else
((MethodInfo)MethodInfo.GetCurrentMethod()).MakeGenericMethod(typeof(TSource)),
#endif
source.Expression,
Expression.Constant(lease, typeof(ILease))
)
);
}
#if CRIPPLED_REFLECTION
internal static MethodInfo InfoOf<R>(Expression<Func<R>> f)
{
return ((MethodCallExpression)f.Body).Method;
}
#endif
#endregion
}
}
#endif
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