Actually, for an output connector you cannot use the "connectors"
logger, since that is a pull-agent logger. Instead you need to use
the "ingest" logger, which is the agents equivalent.
The book covers this in chapter 8.
Karl
On Wed, Jun 8, 2011 at 3:47 PM, Farzad Valad <ho...@farzad.net> wrote:
> You were absolutely right as always. The line in my code was
> "Logging.connectors.log(Level.ALL, "DupFinder Version 1.0.0");" inside the
> constructor that was causing this. I added this line after I had registered
> my code in the old system and hence never saw this error till setting up a
> new system. I guess I can't log inside the constructor?
>
> On 6/8/2011 2:34 PM, Karl Wright wrote:
>>
>> Ok, I have checked in a fix for the RuntimeException handling. If you
>> try the new code, you should get a full trace for the NPE that is
>> causing the problem.
>>
>> Karl
>>
>> On Wed, Jun 8, 2011 at 3:20 PM, Karl Wright<daddy...@gmail.com> wrote:
>>>
>>> The code is:
>>>
>>> Throwable z = e.getTargetException();
>>> if (z instanceof Error)
>>> throw (Error)z;
>>> else
>>> throw (ManifoldCFException)z;
>>>
>>>
>>> The problem cannot be that z is null, because "z instanceof Error"
>>> does not blow up. Indeed:
>>> "java.lang.NullPointerException cannot be cast to
>>> org.apache.manifoldcf.core.interfaces.ManifoldCFException" is the
>>> message. The code is not resilient against RuntimeError exceptions is
>>> one problem.
>>>
>>> The problem with your connector code is therefore a NPE being thrown.
>>> I'll check in changes here and it should be possible for you to tell
>>> what is happening.
>>>
>>> Karl
>>>
>>>
>>> On Wed, Jun 8, 2011 at 2:55 PM, Farzad Valad<ho...@farzad.net> wrote:
>>>>
>>>> Looking at the OutputConnectorFactory code, it seems there are two
>>>> problems.
>>>> The exception handling has a bug assuming a null value won't be passed.
>>>> Line 149 says "throw (ManifoldCFException) z;" where z is null. The
>>>> main
>>>> problem is why registering my connector is now producing an
>>>> InvocationTargetException? and it wasn't a problem before?
>>>>
>>>> public DupFinderConnector() throws ManifoldCFException {
>>>> Logging.connectors.log(Level.ALL, "DupFinder Version 1.0.0");
>>>>
>>>> calendar = Calendar.getInstance();
>>>> hashGen = new HashsumGenerator();
>>>> }
>>>>
>>>>
>>>> On 6/8/2011 12:00 PM, Farzad Valad wrote:
>>>>>
>>>>> Any idea why I would get this failure on registering my connector.
>>>>> Hadn't
>>>>> seen it before. I was trying to setup a new system and was issuing
>>>>> commands
>>>>> to setup the database. Note I was able to register Null Output and
>>>>> File
>>>>> System connectors without error.
>>>>>
>>>>> D:\Program
>>>>> Files\Apache\ManifoldCF\myMCF>processes\script\executecommand.bat
>>>>> org.apache.manifoldcf.agents.RegisterOutput
>>>>> org.apache.manifoldcf.agents.
>>>>> output.dupfinder.DupFinderConnector DupFinder
>>>>> Configuration file successfully read
>>>>> Exception in thread "main" java.lang.ClassCastException:
>>>>> java.lang.NullPointerException cannot be cast to
>>>>> org.apache.manifoldcf.core.interfaces.ManifoldCFException
>>>>> at
>>>>>
>>>>> org.apache.manifoldcf.agents.interfaces.OutputConnectorFactory.getConnectorNoCheck(OutputConnectorFactory.java:149)
>>>>> at
>>>>>
>>>>> org.apache.manifoldcf.agents.interfaces.OutputConnectorFactory.install(OutputConnectorFactory.java:50)
>>>>> at
>>>>>
>>>>> org.apache.manifoldcf.agents.outputconnmgr.OutputConnectorManager.registerConnector(OutputConnectorManager.java:180)
>>>>> at
>>>>>
>>>>> org.apache.manifoldcf.agents.RegisterOutput.doExecute(RegisterOutput.java:47)
>>>>> at
>>>>>
>>>>> org.apache.manifoldcf.agents.TransactionalAgentsInitializationCommand.execute(TransactionalAgentsInitializationCommand.java:43)
>>>>> at
>>>>>
>>>>> org.apache.manifoldcf.agents.RegisterOutput.main(RegisterOutput.java:70)
>>>>>
>>>>> D:\Program
>>>>> Files\Apache\ManifoldCF\myMCF>processes\script\executecommand.bat
>>>>> org.apache.manifoldcf.agents.RegisterOutput
>>>>> org.apache.manifoldcf.agents.output.nullconnector.NullConnector
>>>>> NullOutput
>>>>> Configuration file successfully read
>>>>> Successfully registered output connector
>>>>> 'org.apache.manifoldcf.agents.output.nullconnector.NullConnector'
>>>>>
>>>>> D:\Program
>>>>> Files\Apache\ManifoldCF\myMCF>processes\script\executecommand.bat
>>>>> org.apache.manifoldcf.crawler.Register
>>>>> org.apache.manifoldcf.crawler.connectors.filesystem.FileConnector
>>>>> FileSystem
>>>>> Configuration file successfully read
>>>>> Successfully registered connector
>>>>> 'org.apache.manifoldcf.crawler.connectors.filesystem.FileConnector'
>>>>>
>>>>> D:\Program Files\Apache\ManifoldCF\myMCF>
>>>>
>
>
