Hello !
I'm still trying to fix committing problem I have. I think that is it
something in my code, but I cant find out what. Can someone suggest
what can be wrong ?
I have two related objects in context, one is new, and one is hollow
(because it was copied to this context using localObject() ):
2006-04-26 12:05:46,172 [AWT-EventQueue-0] INFO
com.ish.angel.controller.EditController - attempting to commit,
listing all objects in context:
2006-04-26 12:05:46,173 [AWT-EventQueue-0] INFO
com.ish.angel.controller.EditController - 1
object :<[EMAIL PROTECTED],
id=<ObjectId:SubCategory, TEMP:000000F1D0423EC5>, state=new,
[EMAIL PROTECTED]>
2006-04-26 12:05:46,173 [AWT-EventQueue-0] INFO
com.ish.angel.controller.EditController - 2
object :<[EMAIL PROTECTED],
id=<ObjectId:Category, id=200>, state=hollow,
[EMAIL PROTECTED]>
commitChanges() throws an exception:
org.objectstyle.cayenne.CayenneRuntimeException: [v.1.2-dev-2006-4-25
April 25 2006] Remote error. URL - http://localhost:8181/angel-server-
cayenne
at
org.objectstyle.cayenne.remote.hessian.HessianConnection.doSendMessage
(HessianConnection.java:181)
at org.objectstyle.cayenne.remote.BaseConnection.sendMessage
(BaseConnection.java:109)
at org.objectstyle.cayenne.remote.ClientChannel.send
(ClientChannel.java:279)
at org.objectstyle.cayenne.remote.ClientChannel.onSync
(ClientChannel.java:188)
at org.objectstyle.cayenne.CayenneContext.doCommitChanges
(CayenneContext.java:233)
at org.objectstyle.cayenne.CayenneContext.commitChanges
(CayenneContext.java:220)
at com.ish.angel.controller.EditController.saveRecord
(EditController.java:287)
on server side there is an exception thrown too:
2006-04-26 12:05:46,240 [SocketListener0-1] DEBUG
com.ish.angel.server.cayenne.glue.CayenneDataObject - Changing
persistence state for class com.ish.angel.server.cayenne.SubCategory
from: transient to: new
Apr 26, 2006 12:05:46 PM com.caucho.hessian.server.HessianSkeleton
invoke
WARNING: java.lang.NullPointerException
java.lang.NullPointerException
at org.objectstyle.cayenne.map.EntityResolver.lookupObjEntity
(EntityResolver.java:514)
2006-04-26 12:05:46,640 [SocketListener0-1] DEBUG
com.ish.angel.server.cayenne.glue.CayenneDataObject - Changing
persistence state for class com.ish.angel.server.cayenne.SubCategory
from: transient to: transient
at org.objectstyle.cayenne.access.ChildDiffLoader.arcCreated
(ChildDiffLoader.java:141)
at org.objectstyle.cayenne.graph.ArcCreateOperation.apply
(ArcCreateOperation.java:80)
at org.objectstyle.cayenne.graph.CompoundDiff.apply
(CompoundDiff.java:133)
at org.objectstyle.cayenne.access.DataContext.onContextFlush
(DataContext.java:1171)
at
org.objectstyle.cayenne.access.ClientServerChannel.onCommit
(ClientServerChannel.java:195)
at org.objectstyle.cayenne.access.ClientServerChannel.onSync
(ClientServerChannel.java:147)
at
org.objectstyle.cayenne.remote.service.DispatchHelper.dispatch
(DispatchHelper.java:80)
at
org.objectstyle.cayenne.remote.service.BaseRemoteService.processMessage(
BaseRemoteService.java:182)
at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.caucho.hessian.server.HessianSkeleton.invoke
(HessianSkeleton.java:157)
at
org.objectstyle.cayenne.remote.hessian.service._HessianServlet.service
(_HessianServlet.java:388)
at com.ish.angel.server.CayenneServlet.service
(CayenneServlet.java:59)
at org.mortbay.jetty.servlet.ServletHolder.handle
(ServletHolder.java:428)
at org.mortbay.jetty.servlet.ServletHandler.dispatch
(ServletHandler.java:666)
at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:568)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
at org.mortbay.http.HttpServer.service(HttpServer.java:909)
at org.mortbay.http.HttpConnection.service
(HttpConnection.java:816)
at org.mortbay.http.HttpConnection.handleNext
(HttpConnection.java:982)
at org.mortbay.http.HttpConnection.handle
(HttpConnection.java:833)
at org.mortbay.http.SocketListener.handleConnection
(SocketListener.java:244)
at org.mortbay.util.ThreadedServer.handle
(ThreadedServer.java:357)
at org.mortbay.util.ThreadPool$PoolThread.run
(ThreadPool.java:534)
I followed the stack trace. There is a call to
DataObject source = findObject(nodeId);
which calls :
graphManager.getNode(nodeId);
in ChildDiffLoader. In my case it appears to return null. (I cant
access cvs to put more logging into it to be 100% sure). Why getNode
() returns null ? Could that be because ObjectId has already changed
from TEMP id to permanent id ? (nodeId is actually ObjectId, isn't it ?)
Andrus, can you explain how is creating new object on server
processed ? I can see that after committing a new record on server
side this object is in transient state, and then it is inserted to
some context (transient -> new). Is that caused by the exception that
my object is then still in transient state ?
Thank you
Marcin
-------------------------->
ish
http://www.ish.com.au
Level 1, 30 Wilson Street Newtown 2042 Australia
phone +61 2 9550 5001 fax +61 2 9550 4001
