[Mulgara-dev] TqlSession changes

[Brian Sletten]

Hi, Alex, thanks for checking this out. I will look into the problems  
you are having, but I wanted to address a few points.

> 1. In production, I never use the default "server1" server name.  In  
> addition to
> specifying a hostname for querying graphs for auto-completion, it  
> would be nice
> to override the default server name and RMI registry port.

This is why I am going to be focusing on a new shell that allows you  
to connect to servers like:

connect <rmi://localhost/server1>;

At that point, we will query the models for that server. That should  
solve your problem more conveniently than having to override  
individual values.

You can connect to a different server at any time.

I will go ahead and add these to the TqlSession shell too so you can  
benefit from it sooner than later.

> 2. No messages are actually flushed to the console until a query is  
> successfully
> executed.  For instance, I start the shell and type "help;" and hit  
> enter -
> nothing happens.  I type in a query and hit enter, and then the help  
> message is
> displayed, followed by the query results.  The same thing happens  
> when there is
> an error parsing or executing a command - the error message is not  
> displayed
> until a query actually completes.

I'll see if I can fix this in the short-term, but I will certainly  
make the new shell work like this.

> 3. I can get into a weird state where I can't exit the shell with  
> the "quit"
> command.  The most reliable way to reproduce this is to open a new  
> shell, type
> in a query with a syntax error and hit enter.  Entering "quit;" at  
> the next
> command prompt does not do anything.  There seems to be something  
> screwy going
> on with the command splitting or something like that.

I think right now CTRL-D is the only thing that shuts it down, but I  
will make sure quit works as well.

> All in all though, the Swing-less command shell is a much-anticipated
> improvement.  Thanks!

Sure. I think people will like it. I've waited years for this  
capability!

I plan to add typical shell "!" commands (last select, last load, last  
connect, etc.), history management, etc.

If anyone else thinks of desired features, let me know.
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