So I never see this because I use migrations on every app, so the
models are touched early all the time ... But if i turn off
migrations, it does look like it's not triggered until the first EOF
request. The problem is that if you don't have a delegate on
EOModelGroup, the creation of the model group happens inside of a:
synchronized (EOModel._EOGlobalModelLock) {..}
However, if you have a delegate, which wonder does, there is no lock.
I think ERXExtensions.defaultModelGroup should have a volatile
defaultModelGroup and put a synchronized double-null-check in there.
I'm going to put that in unless someone can think of a reason why it
shouldn't be there.
ms
On Nov 3, 2009, at 8:01 PM, Paul Hoadley wrote:
On 04/11/2009, at 11:19 AM, Paul Hoadley wrote:
Here's a stack trace from ERXModelGroup.loadModelsFromLoadedBundles
():
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1230)
at er.extensions.eof.ERXModelGroup.loadModelsFromLoadedBundles
(ERXModelGroup.java:125)
at er.extensions.ERXExtensions.defaultModelGroup
(ERXExtensions.java:135)
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.webobjects.foundation.NSSelector._safeInvokeMethod
(NSSelector.java:122)
at com.webobjects.foundation._NSDelegate._perform(_NSDelegate.java:
223)
at com.webobjects.foundation._NSDelegate.perform(_NSDelegate.java:
155)
at com.webobjects.eoaccess.EOModelGroup.defaultGroup
(EOModelGroup.java:328)
at net.logicsquad.pbf.Application.didFinishLaunching
(Application.java:29)
at er.extensions.appserver.ERXApplication.didFinishLaunching
(ERXApplication.java:1144)
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.webobjects.foundation.NSSelector._safeInvokeMethod
(NSSelector.java:122)
at com.webobjects.foundation.NSNotificationCenter
$_Entry.invokeMethod(NSNotificationCenter.java:588)
at com.webobjects.foundation.NSNotificationCenter.postNotification
(NSNotificationCenter.java:532)
at com.webobjects.foundation.NSNotificationCenter.postNotification
(NSNotificationCenter.java:546)
at com.webobjects.appserver.WOApplication.run(WOApplication.java:
1239)
at er.extensions.appserver.ERXApplication.run(ERXApplication.java:
1225)
at com.webobjects.appserver.WOApplication.main(WOApplication.java:
548)
at er.extensions.appserver.ERXApplication.main(ERXApplication.java:
716)
at net.logicsquad.pbf.Application.main(Application.java:13)
Hang on, that may be a red herring. I was printing out
EOModelGroup.defaultGroup() in Application.didFinishLaunching() as
one of the first things I tried to debug this. Removing that, it
looks more sensible:
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1230)
at er.extensions.eof.ERXModelGroup.loadModelsFromLoadedBundles
(ERXModelGroup.java:125)
at er.extensions.ERXExtensions.defaultModelGroup(ERXExtensions.java:
135)
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.webobjects.foundation.NSSelector._safeInvokeMethod
(NSSelector.java:122)
at com.webobjects.foundation._NSDelegate._perform(_NSDelegate.java:
223)
at com.webobjects.foundation._NSDelegate.perform(_NSDelegate.java:
155)
at com.webobjects.eoaccess.EOModelGroup.defaultGroup
(EOModelGroup.java:328)
at net.logicsquad.pbf.components.pages.LogIn.allNotices(LogIn.java:
99)
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.webobjects.foundation.NSKeyValueCoding$ValueAccessor
$1.methodValue(NSKeyValueCoding.java:636)
at com.webobjects.foundation.NSKeyValueCoding
$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)
at com.webobjects.foundation.NSKeyValueCoding
$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)
at com.webobjects.appserver.WOComponent.valueForKey
(WOComponent.java:1736)
at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey
(NSKeyValueCoding.java:447)
at com.webobjects.foundation.NSKeyValueCodingAdditions
$DefaultImplementation.valueForKeyPath
(NSKeyValueCodingAdditions.java:216)
at com.webobjects.appserver.WOComponent.valueForKeyPath
(WOComponent.java:1804)
at net.logicsquad.webobjects.components.LSComponent.valueForKeyPath
(LSComponent.java:347)
at
com.webobjects.appserver
._private.WOKeyValueAssociation.valueInComponent
(WOKeyValueAssociation.java:50)
at com.webobjects.appserver.WOAssociation.booleanValueInComponent
(WOAssociation.java:276)
at
er.extensions.components.conditionals.ERXWOConditional.conditionInComponent
(ERXWOConditional.java:47)
at
er.extensions.components.conditionals.ERXWOConditional.meetsConditionInComponent
(ERXWOConditional.java:52)
at
er.extensions.components.conditionals.ERXWOConditional.appendToResponse
(ERXWOConditional.java:120)
at
com.webobjects.appserver
._private.WODynamicGroup.appendChildrenToResponse
(WODynamicGroup.java:126)
at com.webobjects.appserver._private.WODynamicGroup.appendToResponse
(WODynamicGroup.java:136)
at
com.webobjects.appserver._private.WOComponentContent.appendToResponse
(WOComponentContent.java:51)
at
com.webobjects.appserver
._private.WODynamicGroup.appendChildrenToResponse
(WODynamicGroup.java:126)
at com.webobjects.appserver._private.WODynamicGroup.appendToResponse
(WODynamicGroup.java:136)
at com.webobjects.appserver.WOComponent.appendToResponse
(WOComponent.java:1122)
at er.extensions.components.ERXComponent.appendToResponse
(ERXComponent.java:107)
at net.logicsquad.webobjects.components.LSComponent.appendToResponse
(LSComponent.java:465)
at
com.webobjects.appserver
._private.WOComponentReference.appendToResponse
(WOComponentReference.java:135)
at
com.webobjects.appserver
._private.WODynamicGroup.appendChildrenToResponse
(WODynamicGroup.java:126)
at com.webobjects.appserver._private.WODynamicGroup.appendToResponse
(WODynamicGroup.java:136)
at com.webobjects.appserver.WOComponent.appendToResponse
(WOComponent.java:1122)
at er.extensions.components.ERXComponent.appendToResponse
(ERXComponent.java:107)
at net.logicsquad.webobjects.components.LSComponent.appendToResponse
(LSComponent.java:465)
at
com.webobjects.appserver
._private.WOComponentReference.appendToResponse
(WOComponentReference.java:135)
at
com.webobjects.appserver
._private.WODynamicGroup.appendChildrenToResponse
(WODynamicGroup.java:126)
at com.webobjects.appserver._private.WODynamicGroup.appendToResponse
(WODynamicGroup.java:136)
at com.webobjects.appserver.WOComponent.appendToResponse
(WOComponent.java:1122)
at er.extensions.components.ERXComponent.appendToResponse
(ERXComponent.java:107)
at net.logicsquad.webobjects.components.LSComponent.appendToResponse
(LSComponent.java:465)
at com.webobjects.appserver.WOComponent._appendPageToResponse
(WOComponent.java:1574)
at com.webobjects.appserver.WOComponent._generateResponseInContext
(WOComponent.java:1543)
at com.webobjects.appserver.WOComponent.generateResponse
(WOComponent.java:1538)
at
com.webobjects.appserver
._private.WOActionRequestHandler._handleRequest
(WOActionRequestHandler.java:278)
at
com.webobjects.appserver
._private.WOActionRequestHandler.handleRequest
(WOActionRequestHandler.java:158)
at
er.extensions.appserver.ERXDirectActionRequestHandler.handleRequest
(ERXDirectActionRequestHandler.java:124)
at com.webobjects.appserver.WOApplication.dispatchRequest
(WOApplication.java:1687)
at er.extensions.appserver.ERXApplication.dispatchRequestImmediately
(ERXApplication.java:1904)
at er.extensions.appserver.ERXApplication.dispatchRequest
(ERXApplication.java:1869)
at net.logicsquad.webobjects.app.LSApplication.dispatchRequest
(LSApplication.java:381)
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:637)
_And_, all the models are now adjusted before LogIn.allNotices() is
called in the default page. I've presumably done something in the
meantime to fix it. I'll start working backwards and see if I can
find it...
--
Paul.
w http://logicsquad.net/
h http://paul.hoadley.name/
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