Ah. I see. Thanks for the infos. The isValid methods of Publisher and
Subscriber seem to call out to ros::ok already, so I guess we should
just keep it in to not break backwards compatibility.

Btw. I've just released client_rosjava-0.1.2. It contains the new
wrappers for the ok methods and a couple of bug-fixed to the message
generator.

Lorenz


> It was in publisher and subscriber, not nodehandle.
> 
> Previously I emulated ros::ok() with something like
> 
> while(pub.isValid()) {
>   pub.publish("Still awake");
> }
> 
> If there is now a proper ros::ok(), this behavior should probably be
> disabled for consistency.
> 
> --Nick
> 
> 2010/12/16 Lorenz Mösenlechner <moesenle@in.tum.de>
> 
> > As far as I can see, NodeHandle::isValid doesn't call out to roscpp
> > but tries to simulate the behavior of NodeHandle::ok by using a flag
> > that is set on initialization and cleared on shutdown. The roscpp ok
> > method also checks for ros::ok.
> >
> > I have added JNI wrappers for ros::ok and NodeHandle::ok now and
> > pushed them into master.
> >
> > Lorenz
> >
> > > At some point I wrapped ros::ok in isValid. The rosjava bindings are
> > pretty out of date.
> > >
> > > --Nick
> > >
> > >
> > > On Dec 15, 2010, at 3:29 AM, Lorenz Mösenlechner <moesenle@in.tum.de>
> > wrote:
> > >
> > > > Hi,
> > > >
> > > > it seems that the ok method is not wrapped yet. I will add that as
> > > > soon as I find some spare time.
> > > >
> > > > I filed a ticket here:
> > > > http://code.in.tum.de/indefero/index.php//p/client-rosjava/issues/1/
> > > >
> > > > Lorenz
> > > >
> > > >> Hi,
> > > >>
> > > >> is there an equivalent for ros::ok() available in rosjava? I have the
> > > >> problem that my Java nodes don't get notified about the SIGINT, so I
> > > >> don't really know how to stop a Java node (except for implementing a
> > > >> user command for that, which is not too elegant)
> > > >>
> > > >> thanks in advance
> > > >> cheers, Máté
> > > >>
> > > >> On 2010-12-09 17:13, Lorenz Mösenlechner wrote:
> > > >>> Hi,
> > > >>>
> > > >>> rosjava has finally been released. We moved the packages `rosjava'
> > and
> > > >>> `test_rosjava' to the new stack `client_rosjava'. It can be checked
> > > >>> out with
> > > >>>
> > > >>> git clone git://code.in.tum.de/git/client-rosjava.git client_rosjava
> > > >>>
> > > >>> Debian packages should be available soon.
> > > >>>
> > > >>> The release includes a new message generator that doesn't depend on
> > > >>> genmsg_cpp anymore. The message format got slightly changed:
> > > >>>
> > > >>>  * The `bool' data type is now `boolean' instead of int in the Java
> > > >>>    message file.
> > > >>>
> > > >>>  * Unsigned data types are now represented by the next bigger
> > (signed)
> > > >>>    Java data type where possible.
> > > >>>
> > > >>>  * Variable size arrays over complex types are now of type
> > > >>>    `ArrayList<type>'
> > > >>>
> > > >>>  * Variable size arrays over primitive types still are normal Java
> > > >>>    arrays
> > > >>>
> > > >>>  * Messages now provide the methods `equals' and `hashCode'
> > > >>>
> > > >>> Since Java message files cannot be included in the Debian packages,
> > > >>> the way messages are generated had to be changed, too: if a package
> > > >>> compiles java code, the message files of all dependencies are now
> > > >>> generated inside the package that depends on them. That means rosjava
> > > >>> can be used on shared installations now without requiring a pre-built
> > > >>> jar file that contains the missing messages.
> > > >>>
> > > >>> Lorenz
> > > >>>
> > > >>>
> > > >>
> > > >>
> > > >
> > > _______________________________________________
> > > ros-users mailing list
> > > ros-users@code.ros.org
> > > https://code.ros.org/mailman/listinfo/ros-users
> >
> >
> > _______________________________________________
> > ros-users mailing list
> > ros-users@code.ros.org
> > https://code.ros.org/mailman/listinfo/ros-users
> >
> >

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-- 
Lorenz Mösenlechner            | moesenle@in.tum.de
Technische Universität München | Boltzmannstr. 3
85748 Garching bei München     | Germany
http://ias.cs.tum.edu/         | Tel: +49 (89) 289-26910