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From Mitch Gitman <>
Subject Re: I think the answer to this question is no
Date Tue, 19 Jan 2010 16:49:32 GMT
Thanks, Dominique. You stated this quite clearly.

It seems that, since the project knows all its listeners to notify them of
an event, it wouldn't be so hard to add a method to query all the listeners
for their log level and then return the max of that. The build listeners
would also need a getter for their log level. I will allow that, by this
time, you're having to do a certain amount of work to spare yourself some
other work. And I'll also allow that the work you're being spared is
typically a negligible burden.

There's one other matter I want to investigate when it comes to logging. I
may want my Ant task to consume some component that wasn't written for Ant,
so it doesn't have a handle on the Project or a ProjectComponent to log
anything. Perhaps it uses log4j. I'd like to see to what extent Ant's
logging can coordinate with and control the Ant-agnostic logging.

Not a question so much as thinking out loud.

On Mon, Jan 18, 2010 at 2:05 PM, Dominique Devienne <>wrote:

> On Sun, Jan 17, 2010 at 11:30 PM, Mitch Gitman <> wrote:
> > Is there any programmatic mechanism within Ant to arbitrarily query what
> the
> > current log level is? [...]
> >
> > What I'd like to do is invoke getProject().log("Some message",
> > Project.MSG_VERBOSE) only if the current log level is verbose.
> No indeed. The reason being that Ant doesn't keep track of the
> "highest" log level for the Logger or the Listeners, because these
> guys don't declare whether the "max" level they are interested in. the
> -verbose or -debug you pass in the CLI is used by the one Logger, but
> there can be other Listener instances that want to get debug messages
> even though the Logger does not care about those. There is therefore
> no way to avoid generating those strings and sending out these logging
> events, despite potentially no one wanting them. Would be a valuable
> addition IMHO, but since for BC reasons you'd have to "default" the
> max_log_level arg added to Project.addListener(), code that doesn't
> use the new API would push the project's max log level to the debug
> anway. See what I mean? I'm not sure what I wrote is very clear I'm
> afraid. --DD
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