/// <summary>
/// Perform a commit or message acknowledgement, as appropriate
/// </summary>
/// <param name="session">The session to commit.</param>
/// <param name="message">The message to acknowledge.</param>
/// <exception cref="NMSException">In case of commit failure</exception>
protected virtual void CommitIfNecessary(ISession session, IMessage message)
{
// Commit session or acknowledge message
if (session.Transacted)
{
// Commit necessary - but avoid commit call is Session transaction is externally coordinated.
if (IsSessionLocallyTransacted(session))
{
NmsUtils.CommitIfNecessary(session);
}
}
else if (IsClientAcknowledge(session))
{
message.Acknowledge();
}
}
/// <summary>
/// Invoke the specified listener as Spring SessionAwareMessageListener,
/// exposing a new NMS Session (potentially with its own transaction)
/// to the listener if demanded.
/// </summary>
/// <param name="listener">The Spring ISessionAwareMessageListener to invoke.</param>
/// <param name="session">The session to operate on.</param>
/// <param name="message">The received message.</param>
/// <exception cref="NMSException">If thrown by NMS API methods.</exception>
/// <see cref="ISessionAwareMessageListener"/>
/// <see cref="ExposeListenerSession"/>
protected virtual void DoInvokeListener(ISessionAwareMessageListener listener, ISession session, IMessage message)
{
IConnection conToClose = null;
ISession sessionToClose = null;
try
{
ISession sessionToUse = session;
if (!ExposeListenerSession)
{
//We need to expose a separate Session.
conToClose = CreateConnection();
sessionToClose = CreateSession(conToClose);
sessionToUse = sessionToClose;
}
// Actually invoke the message listener
if (logger.IsDebugEnabled)
{
logger.Debug("Invoking listener with message of type [" + message.GetType() +
"] and session [" + sessionToUse + "]");
}
listener.OnMessage(message, sessionToUse);
// Clean up specially exposed Session, if any
if (sessionToUse != session)
{
if (sessionToUse.Transacted && SessionTransacted)
{
// Transacted session created by this container -> commit.
NmsUtils.CommitIfNecessary(sessionToUse);
}
}
} finally
{
NmsUtils.CloseSession(sessionToClose);
NmsUtils.CloseConnection(conToClose);
}
}
