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Posted to dev@avalon.apache.org by "Xin, Wayne" <wx...@creekpath.com> on 2001/10/09 23:07:51 UTC
Simple test failed to run.
I got a NullPointerException when trying to run the a simple test class on
DefaultTimeScheduler.start(). Since I don't have an example, I'm hoping
someone can tell me what went wrong.
------------------------- error output ---------------------------
C:\MySoftwares\jbuilder5\jdk1.3\bin\javaw -classpath
"C:\Personal\projects\Aim\Scheduler\AvalonSchedulerTest\classes;C:\Personal\
projects\Aim\Scheduler\jakarta-avalon-cornerstone\lib\avalon-framework.jar;C
:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\corne
rstone.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\bui
ld\lib\phoenix-client.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-
cornerstone\build\lib\avalon-excalibur-4.0.jar;C:\MySoftwares\jbuilder5\jdk1
.3\demo\jfc\Java2D\Java2Demo.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\i18
n.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\jaws.jar;C:\MySoftwares\jbuild
er5\jdk1.3\jre\lib\rt.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\sunrsasign
.jar;C:\MySoftwares\jbuilder5\jdk1.3\lib\dt.jar;C:\MySoftwares\jbuilder5\jdk
1.3\lib\tools.jar" AvalonSchedulerTest
java.lang.NullPointerException at
org.apache.avalon.cornerstone.blocks.scheduler.DefaultTimeScheduler.start(De
faultTimeScheduler.java:208) at
AvalonSchedulerTest.main(AvalonSchedulerTest.java:30)
--------------------------- end error output -----------------------
--------------------------- my simple test --------------------------
import org.apache.avalon.cornerstone.services.scheduler.Target;
import org.apache.avalon.cornerstone.services.scheduler.TimeTrigger;
import org.apache.avalon.cornerstone.services.scheduler.TimeScheduler;
import org.apache.avalon.cornerstone.services.scheduler.PeriodicTimeTrigger;
import org.apache.avalon.cornerstone.blocks.scheduler.DefaultTimeScheduler;
public class AvalonSchedulerTest
{
public static void main( String[] args )
{
// AvalonSchedulerTest ast = new AvalonSchedulerTest();
Target aTarget = new Target() {
public void targetTriggered(String triggerName)
{
System.out.println("Event happening - " + triggerName);
}
};
TimeTrigger aTrigger = new PeriodicTimeTrigger(1000, 1000);
DefaultTimeScheduler dts = new DefaultTimeScheduler();
dts.initialize();
dts.addTrigger("A Trigger", aTrigger, (Target) aTarget);
try
{
dts.start();
} catch (Exception ex)
{
ex.printStackTrace();
}
}
}
-Wayne Xin
-----Original Message-----
From: Uli Mayring [mailto:ulim@denic.de]
Sent: Monday, October 08, 2001 1:39 PM
To: Avalon Development
Subject: Re: Cornerstone & scheduler
On Mon, 8 Oct 2001, Xin, Wayne wrote:
> I'm wondering what timeframe the Avalon/Cornerstone is going to be ready.
> Actually, I only need a simple java based scheduler. If you know any other
> projects that contains this mechanism, please let me know. Thank you.
You can use Avalon if you only need the scheduler, it seems to work quite
well. However, there is no documentation for it, just an example program.
Ulrich
--
Ulrich Mayring
DENIC eG, Softwareentwicklung
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Re: Simple test failed to run.
Posted by Paul Hammant <Pa...@yahoo.com>.
Wayne,
With respect you should have the skills to chase the cause of a NPE
yourself. Please use traditional debuging techniques
(System.out.println(..)) until you know what is wrong. If then it turns
out that our code is wrong, you can supply a patch. This is not a forum
for free support for you developing the alpha stages of your own tool.
There are lots of people here who are very busy, and frankly you've
asked way more questions than provided considered observations or code.
Regards,
- Paul H
> I got a NullPointerException when trying to run the a simple test
> class on DefaultTimeScheduler.start(). Since I don't have an example,
> I'm hoping someone can tell me what went wrong.
>
> ------------------------- error output ---------------------------
> C:\MySoftwares\jbuilder5\jdk1.3\bin\javaw -classpath
> "C:\Personal\projects\Aim\Scheduler\AvalonSchedulerTest\classes;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\lib\avalon-framework.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\cornerstone.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\phoenix-client.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\avalon-excalibur-4.0.jar;C:\MySoftwares\jbuilder5\jdk1.3\demo\jfc\Java2D\Java2Demo.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\i18n.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\jaws.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\rt.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\sunrsasign.jar;C:\MySoftwares\jbuilder5\jdk1.3\lib\dt.jar;C:\MySoftwares\jbuilder5\jdk1.3\lib\tools.jar"
> AvalonSchedulerTest
>
> java.lang.NullPointerException at
> org.apache.avalon.cornerstone.blocks.scheduler.DefaultTimeScheduler.start(DefaultTimeScheduler.java:208)
> at AvalonSchedulerTest.main(AvalonSchedulerTest.java:30)
>
> --------------------------- end error output -----------------------
>
> --------------------------- my simple test --------------------------
> import org.apache.avalon.cornerstone.services.scheduler.Target;
> import org.apache.avalon.cornerstone.services.scheduler.TimeTrigger;
> import org.apache.avalon.cornerstone.services.scheduler.TimeScheduler;
> import
> org.apache.avalon.cornerstone.services.scheduler.PeriodicTimeTrigger;
> import
> org.apache.avalon.cornerstone.blocks.scheduler.DefaultTimeScheduler;
>
> public class AvalonSchedulerTest
> {
> public static void main( String[] args )
> {
> // AvalonSchedulerTest ast = new AvalonSchedulerTest();
> Target aTarget = new Target() {
> public void targetTriggered(String triggerName)
> {
> System.out.println("Event happening - " + triggerName);
> }
> };
> TimeTrigger aTrigger = new PeriodicTimeTrigger(1000, 1000);
> DefaultTimeScheduler dts = new DefaultTimeScheduler();
> dts.initialize();
> dts.addTrigger("A Trigger", aTrigger, (Target) aTarget);
>
> try
> {
> dts.start();
> } catch (Exception ex)
> {
> ex.printStackTrace();
> }
>
> }
>
> }
>
> -Wayne Xin
>
> -----Original Message-----
> From: Uli Mayring [mailto:ulim@denic.de ]
> Sent: Monday, October 08, 2001 1:39 PM
> To: Avalon Development
> Subject: Re: Cornerstone & scheduler
>
>
> On Mon, 8 Oct 2001, Xin, Wayne wrote:
>
> > I'm wondering what timeframe the Avalon/Cornerstone is going to be
> ready.
> > Actually, I only need a simple java based scheduler. If you know any
> other
> > projects that contains this mechanism, please let me know. Thank you.
>
> You can use Avalon if you only need the scheduler, it seems to work quite
> well. However, there is no documentation for it, just an example program.
>
> Ulrich
>
> --
> Ulrich Mayring
> DENIC eG, Softwareentwicklung
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: avalon-dev-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: avalon-dev-help@jakarta.apache.org
>
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Re: Simple test failed to run.
Posted by Eung-ju Park <co...@isoft.co.kr>.
Simple test failed to run.DefaultTimeScheduler is a __Block__. not a general object. Block managed by phoenix.
See http://jakarta.apache.org/avalon/phoenix & http://jakarta.apache.org/avalon/cornerstone.
PS please use plain text. don't use html. ;-)
----- Original Message -----
From: Xin, Wayne
To: 'Avalon Development'
Sent: Wednesday, October 10, 2001 6:07 AM
Subject: Simple test failed to run.
I got a NullPointerException when trying to run the a simple test class on DefaultTimeScheduler.start(). Since I don't have an example, I'm hoping someone can tell me what went wrong.
------------------------- error output ---------------------------
C:\MySoftwares\jbuilder5\jdk1.3\bin\javaw -classpath "C:\Personal\projects\Aim\Scheduler\AvalonSchedulerTest\classes;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\lib\avalon-framework.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\cornerstone.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\phoenix-client.jar;C:\Personal\projects\Aim\Scheduler\jakarta-avalon-cornerstone\build\lib\avalon-excalibur-4.0.jar;C:\MySoftwares\jbuilder5\jdk1.3\demo\jfc\Java2D\Java2Demo.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\i18n.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\jaws.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\rt.jar;C:\MySoftwares\jbuilder5\jdk1.3\jre\lib\sunrsasign.jar;C:\MySoftwares\jbuilder5\jdk1.3\lib\dt.jar;C:\MySoftwares\jbuilder5\jdk1.3\lib\tools.jar" AvalonSchedulerTest
java.lang.NullPointerException at org.apache.avalon.cornerstone.blocks.scheduler.DefaultTimeScheduler.start(DefaultTimeScheduler.java:208) at AvalonSchedulerTest.main(AvalonSchedulerTest.java:30)
--------------------------- end error output -----------------------
--------------------------- my simple test --------------------------
import org.apache.avalon.cornerstone.services.scheduler.Target;
import org.apache.avalon.cornerstone.services.scheduler.TimeTrigger;
import org.apache.avalon.cornerstone.services.scheduler.TimeScheduler;
import org.apache.avalon.cornerstone.services.scheduler.PeriodicTimeTrigger;
import org.apache.avalon.cornerstone.blocks.scheduler.DefaultTimeScheduler;
public class AvalonSchedulerTest
{
public static void main( String[] args )
{
// AvalonSchedulerTest ast = new AvalonSchedulerTest();
Target aTarget = new Target() {
public void targetTriggered(String triggerName)
{
System.out.println("Event happening - " + triggerName);
}
};
TimeTrigger aTrigger = new PeriodicTimeTrigger(1000, 1000);
DefaultTimeScheduler dts = new DefaultTimeScheduler();
dts.initialize();
dts.addTrigger("A Trigger", aTrigger, (Target) aTarget);
try
{
dts.start();
} catch (Exception ex)
{
ex.printStackTrace();
}
}
}
-Wayne Xin
-----Original Message-----
From: Uli Mayring [mailto:ulim@denic.de]
Sent: Monday, October 08, 2001 1:39 PM
To: Avalon Development
Subject: Re: Cornerstone & scheduler
On Mon, 8 Oct 2001, Xin, Wayne wrote:
> I'm wondering what timeframe the Avalon/Cornerstone is going to be ready.
> Actually, I only need a simple java based scheduler. If you know any other
> projects that contains this mechanism, please let me know. Thank you.
You can use Avalon if you only need the scheduler, it seems to work quite
well. However, there is no documentation for it, just an example program.
Ulrich
--
Ulrich Mayring
DENIC eG, Softwareentwicklung
---------------------------------------------------------------------
To unsubscribe, e-mail: avalon-dev-unsubscribe@jakarta.apache.org
For additional commands, e-mail: avalon-dev-help@jakarta.apache.org
Re: Simple test failed to run.
Posted by Peter Donald <do...@apache.org>.
On Wed, 10 Oct 2001 07:07, Xin, Wayne wrote:
> I got a NullPointerException when trying to run the a simple test class on
> DefaultTimeScheduler.start(). Since I don't have an example, I'm hoping
> someone can tell me what went wrong.
> public class AvalonSchedulerTest
> {
> public static void main( String[] args )
> {
> // AvalonSchedulerTest ast = new AvalonSchedulerTest();
> Target aTarget = new Target() {
> public void targetTriggered(String triggerName)
> {
> System.out.println("Event happening - " + triggerName);
> }
> };
> TimeTrigger aTrigger = new PeriodicTimeTrigger(1000, 1000);
> DefaultTimeScheduler dts = new DefaultTimeScheduler();
> dts.initialize();
> dts.addTrigger("A Trigger", aTrigger, (Target) aTarget);
>
> try
> {
> dts.start();
> } catch (Exception ex)
> {
> ex.printStackTrace();
> }
addTrigger is supposed to happen after service started but thats not the
probelm. If you look at DefaultTimeScheduler.start() you will see that the
only place null pointer could occur like that is when m_threadManager is null.
m_threadManager is set via the compose() method which you haven't called. You
need to create a ThreadManager object and then pass it into
DefaultTimeScheduler like the following
DefaultComponentManager componentManager = new DefaultComponentManager();
componentManager.put( ThreadManager.ROLE, myThreadManager );
dts.compose( componentManager );
--
Cheers,
Pete
------------------------------------------
I just hate 'yes' men, don't you Smithers?
------------------------------------------
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