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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: NPE with command Help & Karaf Shell Console
Date Fri, 29 Nov 2013 09:38:53 GMT
Hi Charles,

do you have description attribute on the @Command annotation ?

Regards
JB

On 11/29/2013 10:32 AM, Charles Moulliard wrote:
> 2.3.3
>
>
> On Fri, Nov 29, 2013 at 10:31 AM, Jean-Baptiste Onofré <jb@nanthrax.net>wrote:
>
>> Hi Charles,
>>
>> what's the Karaf version (as it changed between 2.x and 3.x) ?
>>
>> Regards
>> JB
>>
>>
>> On 11/29/2013 10:18 AM, Charles Moulliard wrote:
>>
>>> Hi,
>>>
>>> For a documentation project, I'm currently creating a Java Command Line
>>> Tool client using our excellent Apache Karaf Shell Console. Nevertheless,
>>> when I try to get help from a command, Gogo & Felix returns a NPE
>>>
>>> HylaMain
>>> java.io.BufferedInputStream@9506dc4
>>> hyla>echo blabla
>>> echo blabla
>>> blabla
>>> hyla>help echo
>>> help echo
>>> [main] ERROR org.apache.karaf.shell.console.jline.Console - Exception
>>> caught while executing command
>>> java.lang.NullPointerException
>>> at
>>> org.apache.karaf.shell.console.help.HelpAction.
>>> doExecute(HelpAction.java:40)
>>> at
>>> org.apache.karaf.shell.console.AbstractAction.
>>> execute(AbstractAction.java:33)
>>> at
>>> org.apache.felix.gogo.commands.basic.AbstractCommand.execute(
>>> AbstractCommand.java:35)
>>> at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:474)
>>> at org.apache.felix.gogo.runtime.Closure.executeStatement(
>>> Closure.java:400)
>>> at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
>>> at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)
>>> at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)
>>> at
>>> org.apache.felix.gogo.runtime.CommandSessionImpl.execute(
>>> CommandSessionImpl.java:89)
>>> at org.apache.karaf.shell.console.jline.Console.run(Console.java:173)
>>> at org.apache.karaf.shell.console.Main.run(Main.java:220)
>>> at org.apache.karaf.shell.console.Main.run(Main.java:164)
>>> at org.apache.karaf.shell.console.Main.run(Main.java:79)
>>> at com.redhat.gpe.hyla.tooling.HylaMain.main(HylaMain.java:34)
>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> at
>>> sun.reflect.NativeMethodAccessorImpl.invoke(
>>> NativeMethodAccessorImpl.java:39)
>>> at
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(
>>> DelegatingMethodAccessorImpl.java:25)
>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
>>> Error executing command: java.lang.NullPointerException
>>>
>>> As this code is really hard to debug as we have embedded the code of
>>> org.apache.felix.gogo.runtime
>>> & org.apache.felix.gogo.commands in the jar of Karaf Shell Console, does
>>> anybody knows why I could get a NPE when we call this method. In debug
>>> mode, I confirm that the session object exists but the command is null
>>> (even if I'm able to recuperate the args 'help echo' and this command
>>> works
>>> 'echo blabla'
>>>
>>> Regards,
>>>
>>>
>> --
>> Jean-Baptiste Onofré
>> jbonofre@apache.org
>> http://blog.nanthrax.net
>> Talend - http://www.talend.com
>>
>
>
>

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com

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