Hi List,
I was trying to use ERPersistentSessionStorage (looks otherwise very promising,
thx Ramsey).
I'm getting a silly NullPointerException (stacktrace below) in an application
that was working perfectly before without using ERPersistantSessionStorage. I
have no idea how to debug this to get more information.
The problem may come from storing an EO object called PMSUser in the session
(basically a user object with name, login, passwd ... PMS=prefix for the
project's classes). The code is:
public class Session extends ERXSession {
private PMSUser currentUser = null;
public PMSUser currentUser() {
return currentUser;
}
public void setCurrentUser(PMSUser currentUser) {
this.currentUser = currentUser;
}
...
}
The page where the error occurs is the one where the user can change his/her
personal data using a form like
<wo:form>
<wo:textfield id="inputGivenName" value =
"$session.currentUser.firstName" />
...
<wo:submitButton action="$saveAction" value="save" />
</wo:form>
but NOT AFTER saving, but directly before rendering the page with the form.
Any ideas? Thanks in advance,
C.U.CW
--
Christoph Wick - Diplom Informatiker, Managing Director
i4innovation GmbH, Professor-Neu-Allee 39, 53225 Bonn, Germany
T +49 2 28 28 62 97 93
M +49 1 51 22 65 78 90
F +49 2 28 28 62 97 99
M c...@i4innovation.de
W www.i4innovation.de
Geschäftsführer: Thomas Heep, Christoph Wick
Sitz der Gesellschaft: Bonn | Amtsgericht Bonn HRB 18548 | USt-IdNr.:
DE276502600
Jul 29 14:41:01 PMS[65432] WARN NSLog -
<er.extensions.appserver.ERXComponentRequestHandler>: Exception occurred while
handling request:
java.lang.NullPointerException
[2013-7-29 14:41:1 MESZ] <WorkerThread0> java.lang.NullPointerException
at
com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:834)
at
er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:380)
at
com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614)
at
er.extensions.eof.ERXGenericRecord$TouchingBinding.valueInObject(ERXGenericRecord.java:209)
at
com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:990)
at
com.webobjects.eocontrol.EOEditingContext._valuesForObject(EOEditingContext.java:790)
at
com.webobjects.eocontrol.EOCustomObject.writeObject(EOCustomObject.java:1125)
at sun.reflect.GeneratedMethodAccessor42.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
at java.io.ObjectOutputStream.access$300(ObjectOutputStream.java:161)
at
java.io.ObjectOutputStream$PutFieldImpl.writeFields(ObjectOutputStream.java:1687)
at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:478)
at
com.webobjects.foundation.NSDictionary.writeObject(NSDictionary.java:594)
at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at
com.webobjects.appserver.WOComponent.writeObject(WOComponent.java:314)
at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
at java.io.ObjectOutputStream.access$300(ObjectOutputStream.java:161)
at
java.io.ObjectOutputStream$PutFieldImpl.writeFields(ObjectOutputStream.java:1687)
at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:478)
at
com.webobjects.foundation.NSDictionary.writeObject(NSDictionary.java:594)
at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at
com.webobjects.appserver.WOComponent.writeObject(WOComponent.java:314)
at sun.reflect.GeneratedMethodAccessor35.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1362)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1170)
at java.io.ObjectOutputStream.access$300(ObjectOutputStream.java:161)
at
java.io.ObjectOutputStream$PutFieldImpl.writeFields(ObjectOutputStream.java:1687)
at java.io.ObjectOutputStream.writeFields(ObjectOutputStream.java:478)
at
com.webobjects.foundation.NSDictionary.writeObject(NSDictionary.java:594)
at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:975)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at
java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1528)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1493)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at
er.persistentsessionstorage.model.ERSessionInfo.archiveDataFromSession(ERSessionInfo.java:61)
at
er.persistentsessionstorage.ERPersistentSessionStore.saveSessionForContext(ERPersistentSessionStore.java:46)
at
com.webobjects.appserver.WOSessionStore.checkInSessionForContext(WOSessionStore.java:234)
at
com.webobjects.appserver.WOApplication.saveSessionForContext(WOApplication.java:1892)
at
er.extensions.appserver.ERXApplication.saveSessionForContext(ERXApplication.java:2381)
at
er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedApplication(ERXComponentRequestHandler.java:273)
at
er.extensions.appserver.ERXComponentRequestHandler._handleRequest(ERXComponentRequestHandler.java:302)
at
er.extensions.appserver.ERXComponentRequestHandler.handleRequest(ERXComponentRequestHandler.java:378)
at
com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687)
at
er.extensions.appserver.ERXApplication.dispatchRequestImmediately(ERXApplication.java:2109)
at
er.extensions.appserver.ERXApplication.dispatchRequest(ERXApplication.java:2074)
at
com.webobjects.appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144)
at
com.webobjects.appserver._private.WOWorkerThread.run(WOWorkerThread.java:226)
at java.lang.Thread.run(Thread.java:722)
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