BOF module error: Could not invoke the method

Hi, All.

We have module , that copy objects beetwen different repositories. It have worked so far.

But after patch installation the modul in not work.

Interface

public interface CopyObjects extends IDfModule  {    public String[] copyObject(String[] objectIds) throws Exception;}

Implementation

public class CopyObjectsImpl extends DfSingleDocbaseModule implements CopyObjects {    @Override    public String[] copyObject(String[] objectIds) throws Exception {          .........    }}

ERROR:

java.lang.Exception: java.lang.RuntimeException: Could not invoke the method 'copyObject' from interface 'class com.test.bpm.bof.modules.CopyObjectsImpl' from BOF module 'com.test.bpm.bof.modules.CopyObjects'    at com.documentum.bps.outbound.AbstractService.execute(AbstractService.java:98)    at com.documentum.bpm.engine.utils.InvokeOutboundService.executeService(InvokeOutboundService.java:102)    at com.documentum.bpm.engine.utils.InvokeOutboundService.invokeService(InvokeOutboundService.java:57)    at com.documentum.bpm.engine.model.activity.OutboundActivityTaskHandler.executeWorkitem(OutboundActivityTaskHandler.java:50)    at com.documentum.bpm.engine.runtime.AutomaticWorkitemHandler.executeService(AutomaticWorkitemHandler.java:256)    at com.documentum.bpm.engine.runtime.AutomaticWorkitemHandler.execute(AutomaticWorkitemHandler.java:119)    at com.documentum.bpm.engine.runtime.AutomaticWorkitemHandler.run(AutomaticWorkitemHandler.java:63)    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)    at java.lang.Thread.run(Thread.java:662)Caused by: java.lang.RuntimeException: Could not invoke the method 'copyObject' from interface 'class com.test.bpm.bof.modules.CopyObjectsImpl' from BOF module 'com.test.bpm.bof.modules.CopyObjects'    at com.documentum.bps.outbound.bof.runtime.BOFClient.invokeMethod(BOFClient.java:122)    at com.documentum.bps.outbound.bof.runtime.BofModuleService.executeServiceOperation(BofModuleService.java:125)    at com.documentum.bps.outbound.AbstractService.executeServiceInternal(AbstractService.java:122)    at com.documentum.bps.outbound.AbstractService.execute(AbstractService.java:79)    ... 9 moreCaused by: java.lang.reflect.InvocationTargetException    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.documentum.bps.outbound.bof.runtime.BOFClient.invokeMethod(BOFClient.java:113)    ... 12 moreCaused by: java.lang.NullPointerException    at com.test.bpm.bof.modules.CopyObjectsImpl.copyObject(CopyObjectsImpl.java:89)    ... 17 more

How can I solve this problem?

Thanks in advance.

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Comments

Hartmut_Clausen

Have a look at line 89 of CopyObjectsImpl.java

...

elk_sinam

Hi, Hartmut.

CopyObjectsImpl.java :

public class CopyObjectsImpl extends DfSingleDocbaseModule implements CopyObjects {    @Override     public String[] copyObject(String[] objectIds) throws Exception {        IDfSession session=null;        IDfSession peerSession=null;        IDfClientX clientX=null;        IDfSessionManager sessionMgr=null;        IDfLoginInfo loginInfo=null;        DfException e=new DfException();        String[] newObjectIds = null;        try{            session=getSession();            clientX=new DfClientX();            loginInfo=clientX.getLoginInfo();            loginInfo.setUser(userName);            loginInfo.setPassword(strPlainPassword);            loginInfo.setDomain(null);            sessionMgr=session.getSessionManager();            if(sessionMgr.hasIdentity(destinationDocbase)){                sessionMgr.clearIdentity(destinationDocbase);            }            sessionMgr.setIdentity(destinationDocbase, loginInfo);            peerSession = sessionMgr.getSession(destinationDocbase);            newObjectIds[0] = session.toString();            newObjectIds[1] = peerSession.toString();            }catch(Exception e1){                DfLogger.warn(this, e.getMessage(), null, e1);                throw e1;        }finally{            if(session!=null)                releaseSession(session);            if(peerSession!=null)                releaseSession(peerSession);        }        return newObjectIds;    }}

there was error after patch installation

VHK

what does the session.toString() and the other peerSession.toString() does.

if you want any objects using the session you can use

session.getObject(new DfId(String objectID))

or you can makue use of session helper methods

for better implementation check the session javadocs

Hartmut_Clausen

Which of the many lines is line 89? The text you posted contains only 44 lines. If you know the line it should not be to hard to identify the variable that does contain a null value.

Additional remarks:

-- remove because it was based on a false asumption --

Message was edited by: Hartmut Clausen

PanfilovAB

Additional remarks:Releasing sessions that you obtained through DfSingleDocbaseModule.getSession() is not recommended. You should only release sessions that you got through IDfSessionManager

It's not true.

Hartmut_Clausen

You are right, so I removed that remark from my answer.

I thought there was some cleanup code in the DfSingleDocbaseModule, but today I decompiled it again and found nothing of that.

elk_sinam

Hi, All.

Hartmut, VHK, PanfilovAB, thanks for your posts.

I have tried it like this, and it works.

CopyObjects is my interface and extends to IDfModule

public class CopyObjectsImpl extends DfSingleDocbaseModule implements CopyObjects {    private IDfSession session;    private IDfSession peerSession;    @Override    public String[] copyObject(String[] objectIds, String destinationDocbase,            String destinationFolderPath,boolean deepFolderCopy, String userName,            String strPlainPassword, String domain) throws Exception {        String[] newObjectIds = null;        DfException e = new DfException();        IDfClientX clientx = new DfClientX();        try {            session = getSession();            IDfSessionManager sessionManager = session.getSessionManager();            IDfLoginInfo loginInfo = clientx.getLoginInfo();            loginInfo.setUser(userName);            loginInfo.setPassword(strPlainPassword);            if(sessionManager.hasIdentity(destinationDocbase)){                sessionManager.clearIdentity(destinationDocbase);            }            sessionManager.setIdentity(destinationDocbase, loginInfo);            peerSession = sessionManager.getSession(destinationDocbase);            CopyOperation cpOpr = new CopyOperation();            IDfList newObjects = cpOpr.copyObjects(peerSession, objectIds, destinationFolderPath, deepFolderCopy);            newObjectIds = new String[newObjects.getCount()];            for(int i=0;i<newObjects.getCount();i++){                IDfSysObject sysObj = (IDfSysObject) newObjects.get(i);                newObjectIds[i] = sysObj.getObjectId().toString();            }        } catch (Exception e1) {            DfLogger.warn(this, e.getMessage(), null, e1);            throw e1;        } finally {            if(session!=null)                releaseSession(session);            if(peerSession!=null)                releaseSession(peerSession);        }        return newObjectIds;    }}

CopyOperation.copyObjects method copy object from one repositor to another with IDfCopyOperation.

PanfilovAB

According to your stacktrace:

Caused by: java.lang.NullPointerException

CopyObjectsImpl should have at least 89 lines. Your code, as Hartmut Clausen had mentioned before, does not contain such amount of lines. What suggestion do you want if you unable to share actual code?

VHK

I could see nowhere in your code

DfList newObjects = cpOpr.copyObjects(peerSession, objectIds,

destinationFolderPath, deepFolderCopy);

your're passing the objectIds ,initially you have declared as null.

if you are calling any methods with null values it does return the null

pointer exception ..

On Mon, Feb 25, 2013 at 7:39 PM, PanfilovAB

elk_sinam

I wrote here only program code. I had not written comments and import. Program code contains 89 and more lines with import and comments.

There was error when I wrote newObjectIds[0] = session.toString(); and newObjectIds[1] = peerSession.toString(); to my code. I think there was error with sessions. Because I had tried it with System.out.println(session.toString()); and other many ways.

But now it works with second code which I have posted.

elk_sinam

There another problem..

I have tested it with debug in process builder in my local computer. it works with debug.

But doesnt work with JMS. Could you help me about that error?

2013-02-27 15:21:29,978 INFO  [STDOUT] (http-0.0.0.0-9080-3) 2013-02-27 15:21:29,978 ERROR [http-0.0.0.0-9080-3] [com.documentum.mthdservlet.DoMethod] - Exception invoking com.documentum.bpm.services.BPSIntegrationMethod.java.lang.Exception: java.lang.RuntimeException: Could not invoke the method 'copyObject' from interface 'class com.sinam.bpm.bof.modules.CopyObjectsImpl' from BOF module 'com.sinam.bpm.bof.modules.CopyObjects' at com.documentum.bps.outbound.AbstractService.execute(AbstractService.java:98) at com.documentum.bpm.services.BPSIntegrationFramework.executeService(BPSIntegrationFramework.java:252) at com.documentum.bpm.services.BPSIntegrationFramework.executeMethod(BPSIntegrationFramework.java:84) at com.documentum.bpm.services.BPSIntegrationMethod.executeMethod(BPSIntegrationMethod.java:26) at com.documentum.bpm.rtutil.GenericWorkflowMethod.execute(GenericWorkflowMethod.java:124) at com.documentum.bpm.rtutil.GenericWorkflowMethod.execute(GenericWorkflowMethod.java:65) at com.documentum.mthdservlet.DfMethodRunner.runIt(Unknown Source) at com.documentum.mthdservlet.AMethodRunner.runAndReturnStatus(Unknown Source) at com.documentum.mthdservlet.DoMethod.invokeMethod(Unknown Source) at com.documentum.mthdservlet.DoMethod.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:662)Caused by: java.lang.RuntimeException: Could not invoke the method 'copyObject' from interface 'class com.sinam.bpm.bof.modules.CopyObjectsImpl' from BOF module 'com.sinam.bpm.bof.modules.CopyObjects' at com.documentum.bps.outbound.bof.runtime.BOFClient.invokeMethod(BOFClient.java:122) at com.documentum.bps.outbound.bof.runtime.BofModuleService.executeServiceOperation(BofModuleService.java:125) at com.documentum.bps.outbound.AbstractService.executeServiceInternal(AbstractService.java:122) at com.documentum.bps.outbound.AbstractService.execute(AbstractService.java:79) ... 31 moreCaused by: java.lang.reflect.InvocationTargetException 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.documentum.bps.outbound.bof.runtime.BOFClient.invokeMethod(BOFClient.java:113) ... 34 moreCaused by: java.lang.NullPointerException at com.sinam.operations.CopyOperation.copyObjects(CopyOperation.java:77) at com.sinam.bpm.bof.modules.CopyObjectsImpl.copyObject(CopyObjectsImpl.java:73) ... 39 more2013-02-27 15:21:29,978 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/bpm].[DoMethod]] (http-0.0.0.0-9080-3) Servlet.service() for servlet DoMethod threw exceptionjavax.servlet.ServletException: java.lang.Exception: java.lang.RuntimeException: Could not invoke the method 'copyObject' from interface 'class com.sinam.bpm.bof.modules.CopyObjectsImpl' from BOF module 'com.sinam.bpm.bof.modules.CopyObjects' at com.documentum.mthdservlet.DoMethod.invokeMethod(Unknown Source) at com.documentum.mthdservlet.DoMethod.doPost(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:662)

Imran_Yusubov

Hello guys,

Please take a look at this links.

https://community.emc.com/message/715260

https://community.emc.com/thread/170645

I have described this problem with details, please give me some inputs.

Thanks in advance

otman

hi Elk_sinam, Experts

for the invocation issue did you deploy jar interface to your bpm.ear web application

jboss5.1.0\server\DctmServer_MethodServer\deploy\bpm.ear\bpm.war\WEB-INF\lib