private bool Exec(bool first)
{
if (first)
{
//If First step of iteration failed, stop & return false
if (!First())
{
return(false);
}
}
else
{
//If one of the subsequent steps of iteration failed, stop & return false
if (!Next())
{
return(false);
}
//Peek command has no way of knowing that it has reached end of queue until it tries to read next message
//therefore even though Next method returns true indicating that command was complete successfully,
//but no message was actually read, for this case need to check if command has changed its status to Complete
//and return true if it did, in order to avoid execution of child commands one extra time
if (_complete)
{
return(true); //TDB Use _comlpete or Complete()?
}
}
//Iterate over children and execute all for each iteration of the parent
foreach (CommandBaseEx command in _children)
{
//Pass Message object to each child, general case, some commands may not need that
command.Message = this.Message;
if (!CommandBaseEx.Run(command))
{
return(false);
}
}
return(true);
}
/// <summary>
///
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
public static bool Run(CommandBaseEx command)
{
//If First step of iteration failed return failure
if (!command.Exec(true))
{
return(false);
}
//Iterate while complete (one steps commands wont even enter the loop)
while (!command.Complete())
{
//Run Next, return false if failed
if (!command.Exec(false))
{
return(false);
}
}
//Return true if complete successfully
return(true);
}
public void AddChild(CommandBaseEx command)
{
_children.Add(command);
}