Hi Dan,

Also have a look at ISIS-265 that I just created. It also contains a patch.

Regards,

Minto


Quoting Dan Haywood <d...@haywood-associates.co.uk>:

Thanks for taking the time to document this; I'll look at it hopefully
later today.


On 5 September 2012 09:54, <mi...@xup.nl> wrote:

Hi folks,

The examples in trunk show this exact same behavior.

It seems the examples have been neglected a little bit, since I first had
to upgrade them from 0.3.0 --> 0.3.1. The attached patch shows the changes
I made.

Scenario to get to the NPE:
1) apply patch
2) mvn clean install  - compiles claims example till html-viewer (json
viewer fails)
3) cd html-viewer
4) mvn jetty:run
5) open browser in http://localhost:8080/claims-**viewer-html<http://localhost:8080/claims-viewer-html>
6) login
7) click Employees
8) click New Employee
9) Enter a name
10) click save ----> NPE

Regards,

Minto


Quoting mi...@xup.nl:

 Hi Folks,

After switching from 0.2.0 to isis trunk (0.3.1 snapshot) I run into an
NPE (See stacktrace below). I probably did something wrong or forgot
something, but I have no clue what. HELP! :-(

Everything seems to work until I hit the "Ok" button when trying to
create a new object.

BTW. I switched back to in-memory persistor (from sql). What is required
to get the JDO persistor running or to get the sql persistor back?

Regards,

Minto

java.lang.NullPointerException
        at org.apache.isis.core.**metamodel.adapter.version.**
ConcurrencyException.**buildMessage(**ConcurrencyException.java:36)
        at org.apache.isis.core.**metamodel.adapter.version.**
ConcurrencyException.(**ConcurrencyException.java:50)
        at org.apache.isis.runtimes.dflt.**runtime.persistence.adapter.**
PojoAdapter.checkLock(**PojoAdapter.java:337)
        at org.apache.isis.viewer.html.**context.**
PersistentRootAdapterMapping.**checkVersion(**
PersistentRootAdapterMapping.**java:56)
        at org.apache.isis.viewer.html.**context.Context.**
getMappedObject(Context.java:**284)
        at org.apache.isis.viewer.html.**action.view.**
ObjectViewAbstract.execute(**ObjectViewAbstract.java:39)
        at org.apache.isis.viewer.html.**servlet.internal.**
WebController.runAction(**WebController.java:383)
        at org.apache.isis.viewer.html.**servlet.internal.**
WebController.generatePage(**WebController.java:286)
        at org.apache.isis.viewer.html.**servlet.ControllerServlet.**
processRequest(**ControllerServlet.java:129)
        at org.apache.isis.viewer.html.**servlet.ControllerServlet.**
processRequest(**ControllerServlet.java:104)
        at org.apache.isis.viewer.html.**servlet.ControllerServlet.**
doPost(ControllerServlet.java:**82)
        at javax.servlet.http.**HttpServlet.service(**
HttpServlet.java:641)
        at javax.servlet.http.**HttpServlet.service(**
HttpServlet.java:722)
        at org.apache.catalina.core.**ApplicationFilterChain.**
internalDoFilter(**ApplicationFilterChain.java:**305)
        at org.apache.catalina.core.**ApplicationFilterChain.**doFilter(*
*ApplicationFilterChain.java:**210)
        at org.apache.isis.runtimes.dflt.**webapp.IsisSessionFilter$**
SessionState.handle(**IsisSessionFilter.java:383)
        at org.apache.isis.runtimes.dflt.**webapp.IsisSessionFilter.**
doFilter(IsisSessionFilter.**java:404)
        at org.apache.catalina.core.**ApplicationFilterChain.**
internalDoFilter(**ApplicationFilterChain.java:**243)
        at org.apache.catalina.core.**ApplicationFilterChain.**doFilter(*
*ApplicationFilterChain.java:**210)
        at org.apache.isis.runtimes.dflt.**webapp.IsisSessionFilter$**
SessionState$1.handle(**IsisSessionFilter.java:315)
        at org.apache.isis.runtimes.dflt.**webapp.IsisSessionFilter.**
doFilter(IsisSessionFilter.**java:404)
        at org.apache.catalina.core.**ApplicationFilterChain.**
internalDoFilter(**ApplicationFilterChain.java:**243)
        at org.apache.catalina.core.**ApplicationFilterChain.**doFilter(*
*ApplicationFilterChain.java:**210)
        at org.apache.catalina.core.**StandardWrapperValve.invoke(**
StandardWrapperValve.java:225)
        at org.apache.catalina.core.**StandardContextValve.invoke(**
StandardContextValve.java:123)
        at org.apache.catalina.**authenticator.**
AuthenticatorBase.invoke(**AuthenticatorBase.java:472)
        at org.apache.catalina.core.**StandardHostValve.invoke(**
StandardHostValve.java:168)
        at org.apache.catalina.valves.**ErrorReportValve.invoke(**
ErrorReportValve.java:98)
        at org.apache.catalina.valves.**AccessLogValve.invoke(**
AccessLogValve.java:927)
        at org.apache.catalina.core.**StandardEngineValve.invoke(**
StandardEngineValve.java:118)
        at org.apache.catalina.connector.**CoyoteAdapter.service(**
CoyoteAdapter.java:407)
        at org.apache.coyote.http11.**AbstractHttp11Processor.**process(*
*AbstractHttp11Processor.java:**1001)
        at org.apache.coyote.**AbstractProtocol$**
AbstractConnectionHandler.**process(AbstractProtocol.java:**585)
        at org.apache.tomcat.util.net.**JIoEndpoint$SocketProcessor.**
run(JIoEndpoint.java:312)
        at java.util.concurrent.**ThreadPoolExecutor.runWorker(**
ThreadPoolExecutor.java:1110)
        at java.util.concurrent.**ThreadPoolExecutor$Worker.run(**
ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.**java:722)






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