/// <summary>
/// Unregisters the news channel.
/// </summary>
/// <param name="channel">The channel.</param>
public void UnregisterNewsChannel(INewsChannel channel)
{
if (channel == null)
{
throw new ArgumentNullException("channel");
}
if (channel.ChannelProcessingType == ChannelProcessingType.NewsItem)
{
try {
_newsItemChannelsLock.AcquireWriterLock(0);
try {
if (_newsItemChannels.ContainsKey(channel))
{
_newsItemChannels.Remove(channel);
}
} finally {
_newsItemChannelsLock.ReleaseWriterLock();
}
} catch (ApplicationException) {
// lock timeout
}
}
else if (channel.ChannelProcessingType == ChannelProcessingType.Feed)
{
try {
_feedChannelsLock.AcquireWriterLock(0);
try {
if (_feedChannels.ContainsKey(channel))
{
_feedChannels.Remove(channel);
}
} finally {
_feedChannelsLock.ReleaseWriterLock();
}
} catch (ApplicationException) {
// lock timeout
}
}
else
{
throw new NotSupportedException("The channel processing type is not yet supported.");
}
}
public int Compare(object x, object y)
{
INewsChannel lhsX = x as INewsChannel;
INewsChannel rhsY = y as INewsChannel;
if (lhsX == null || rhsY == null) // We only know how to sort INewsChannel, so return equal
{
return(0);
}
if (Object.ReferenceEquals(lhsX, rhsY))
{
return(0);
}
if (lhsX.ChannelPriority == rhsY.ChannelPriority)
{
return(String.Compare(lhsX.ChannelName, rhsY.ChannelName));
}
return(lhsX.ChannelPriority < rhsY.ChannelPriority ? -1: 1);
}
