Saving error ...

[andytau]

Hi,
when I try ho add a new model I get the error below, while if I try to edit an existing model everything go ok.
How can I solve ?

Feb 15, 2013 12:19:18 PM org.activiti.editor.rest.model.ModelSaveRestResource saveModel
SEVERE: Error saving model
java.lang.NullPointerException
   at org.activiti.editor.rest.model.ModelSaveRestResource.saveModel(ModelSaveRestResource.java:61)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.restlet.resource.ServerResource.doHandle(ServerResource.java:449)
   at org.restlet.resource.ServerResource.doHandle(ServerResource.java:493)
   at org.restlet.resource.ServerResource.put(ServerResource.java:1142)
   at org.restlet.resource.ServerResource.doHandle(ServerResource.java:378)
   at org.restlet.resource.ServerResource.doNegotiatedHandle(ServerResource.java:594)
   at org.restlet.resource.ServerResource.doConditionalHandle(ServerResource.java:302)
   at org.restlet.resource.ServerResource.handle(ServerResource.java:849)
   at org.restlet.resource.Finder.handle(Finder.java:513)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.routing.Router.doHandle(Router.java:500)
   at org.restlet.routing.Router.handle(Router.java:740)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.engine.application.StatusFilter.doHandle(StatusFilter.java:155)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.engine.ChainHelper.handle(ChainHelper.java:114)
   at org.restlet.engine.application.ApplicationHelper.handle(ApplicationHelper.java:75)
   at org.restlet.Application.handle(Application.java:391)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.routing.Router.doHandle(Router.java:500)
   at org.restlet.routing.Router.handle(Router.java:740)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.routing.Router.doHandle(Router.java:500)
   at org.restlet.routing.Router.handle(Router.java:740)
   at org.restlet.routing.Filter.doHandle(Filter.java:159)
   at org.restlet.routing.Filter.handle(Filter.java:206)
   at org.restlet.engine.ChainHelper.handle(ChainHelper.java:114)
   at org.restlet.Component.handle(Component.java:391)
   at org.restlet.Server.handle(Server.java:491)
   at org.restlet.engine.ServerHelper.handle(ServerHelper.java:74)
   at org.restlet.engine.http.HttpServerHelper.handle(HttpServerHelper.java:153)
   at org.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:1031)
   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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
   at java.lang.Thread.run(Thread.java:722)

[trademak]

Could you verify that if you fill-in a description that it works?
Then it's definitely a bug.

Best regards,

[andytau]

If you mean description of process … then I tried but it doesn't work any way.

Thanks.

[andytau]

Dear All,
I made another try … I exported the model process (included in the distribution), and then reimported the xml. I can correctly deploy this new process, but if I open the imported model and then try to save it (even without modifying it) I get the same error.

Can anyone please suggest a solution ?

Thanks.

Best,
Andrea

[trademak]

Hi,

If you fill-in a description do you get a different stacktrace?
Are you using the Modeler that's included in the 5.11 release?

Best regards,

[andytau]

Hi,
thanks for your reply. Yes the very same stacktrace … I think this is something related to grants, I made this try :

1. create a new model accessing activiti-explorer from a browser window on the server itself. Saved and everything went ok.
2. accessing this model from a browser on a different machine tried to save without modifying and get always the same error
3. reaccessing the model from the server itself tried to save and again everything went ok.

Do I have to configure some particular policies fro tomcat ?

Thanks again.

Best regards,
Andrea

[andytau]

Sorry. Yes it's 5.11

[trademak]

Hi,

This works fine here. So no problem working from another machine.
Could it be related to your network?

Best regards,

[andytau]

I'm checking firewall settings …

Kindest regards,
Andrea

[andytau]

Hi,
solution found. Firewall (JUNIPER) was blocking the request since the signature was associated with a directory traversal attack. Since this is a default rule for many firewalls maybe it should be avoided to use the ../ in the post uri from editor.

Thanks.

Best regards,
Andrea