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Re: WO Crashs while trying to set a boolean property used in a wo:if
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Re: WO Crashs while trying to set a boolean property used in a wo:if

  • Subject: Re: WO Crashs while trying to set a boolean property used in a wo:if
  • From: Timothy Worman <email@hidden>
  • Date: Thu, 13 Nov 2014 13:31:57 -0800
Christoph:

As a matter of practice, I usually don’t sync my components - stateless or not. There are some exceptions where the convenience of syncing overrides the norm.

Tim Worman
UCLA

> On Nov 13, 2014, at 1:26 PM, Christoph Wick <email@hidden> wrote:
>
> Hi Chuck,
>
> thanks for the information.
>
> Does it make sense to have a non-stateless non-synchronizing component?
>
> My rule-of-thumb has always been stateless+non-synchronizing or non-stateless-synchronizing. But it seems to be a 2x2 matrix.
>
> C.U.CW
> --
> The three great virtues of a programmer are Laziness, Impatience and Hubris. (Randal Schwartz)
>
> On 13.11.2014, at 21:27, Chuck Hill <email@hidden> wrote:
>
>> This is part of binding synchronization:
>> at com.webobjects.appserver.WOComponent._doPushValuesUp(WOComponent.java:558)
>> at com.webobjects.appserver.WOComponent.pushValuesToParent(WOComponent.java:535)
>>
>> You can either implement the setter or turn off automatic synchronization.
>>
>> Chuck
>>
>>
>>
>> On 2014-11-13, 12:16 PM, "CHRISTOPH WICK | i4innovation GmbH, Bonn" wrote:
>>
>> I have a strange problem:
>>
>> in a component I use a wo:if:
>>
>> <wo:if condition = "$ses.programmeManager.providerCanChangeStatusToSUBMITTED">
>> ...
>> </wo:if>
>>
>> Its 'condition' property is bound to a method that calculates true or false.
>> There is no corresponding setter method like 'setProviderCanChangeStatusToSUBMITTED(boolean b)' because it's not necessary to store such a value.
>>
>> Nevertheless my app crashes complaining that there is no corresponding setter method (Stacktrace below).
>>
>> For testing I implemented an empty setter method:
>>
>>  public void setProviderCanChangeStatusToSUBMITTED(boolean b) {}
>>
>> and then everything works fine.
>>
>> Any ideas why WO is trying to call this setter method?
>>
>>
>> Stacktrace is:
>>
>> Nov 13 20:44:58 EBACMgmt[44444] WARN  NSLog  - <er.extensions.appserver.ERXComponentRequestHandler>: Exception occurred while handling request:
>> <com.webobjects.foundation.NSKeyValueCoding$UnknownKeyException message '<de.i4innovation.ebacmgmt.eo.managers.EMEventManager 0x6abafc4c> takeValueForKey(): attempt to assign value to unknown key: 'providerCanChangeStatusToSUBMITTED'.
>> This class does not have an instance variable of the name providerCanChangeStatusToSUBMITTED or _providerCanChangeStatusToSUBMITTED, nor a method of the name setProviderCanChangeStatusToSUBMITTED or _setProviderCanChangeStatusToSUBMITTED' object 'de.i4innovation.ebacmgmt.eo.managers.EMEventManager@6abafc4c' key 'providerCanChangeStatusToSUBMITTED'>
>> [2014-11-13 20:44:58 MEZ] <WorkerThread0> <com.webobjects.foundation.NSKeyValueCoding$UnknownKeyException message '<de.i4innovation.ebacmgmt.eo.managers.EMEventManager 0x6abafc4c> takeValueForKey(): attempt to assign value to unknown key: 'providerCanChangeStatusToSUBMITTED'.
>> This class does not have an instance variable of the name providerCanChangeStatusToSUBMITTED or _providerCanChangeStatusToSUBMITTED, nor a method of the name setProviderCanChangeStatusToSUBMITTED or _setProviderCanChangeStatusToSUBMITTED' object 'de.i4innovation.ebacmgmt.eo.managers.EMEventManager@6abafc4c' key 'providerCanChangeStatusToSUBMITTED'>
>> at com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.handleTakeValueForUnboundKey(NSKeyValueCoding.java:1399)
>> at com.webobjects.foundation.NSKeyValueCoding$Utility.handleTakeValueForUnboundKey(NSKeyValueCoding.java:521)
>> at com.webobjects.foundation.NSKeyValueCoding$_KeyBinding.setValueInObject(NSKeyValueCoding.java:899)
>> at com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.takeValueForKey(NSKeyValueCoding.java:1354)
>> at com.webobjects.foundation.NSKeyValueCoding$Utility.takeValueForKey(NSKeyValueCoding.java:471)
>> at com.webobjects.foundation.NSValidation$DefaultImplementation.validateTakeValueForKeyPath(NSValidation.java:679)
>> at com.webobjects.foundation.NSValidation$Utility.validateTakeValueForKeyPath(NSValidation.java:504)
>> at com.webobjects.foundation.NSValidation$DefaultImplementation.validateTakeValueForKeyPath(NSValidation.java:687)
>> at com.webobjects.foundation.NSValidation$Utility.validateTakeValueForKeyPath(NSValidation.java:504)
>> at com.webobjects.foundation.NSValidation$DefaultImplementation.validateTakeValueForKeyPath(NSValidation.java:687)
>> at com.webobjects.appserver.WOComponent.validateTakeValueForKeyPath(WOComponent.java:1424)
>> at com.webobjects.appserver._private.WOKeyValueAssociation.setValue(WOKeyValueAssociation.java:76)
>> at ognl.helperfunction.WOHelperFunctionKeyValueAssociation.setValue(WOHelperFunctionKeyValueAssociation.java:21)
>> at com.webobjects.appserver.WOComponent._doPushValuesUp(WOComponent.java:558)
>> at com.webobjects.appserver.WOComponent.pushValuesToParent(WOComponent.java:535)
>> at com.webobjects.appserver._private.WOComponentReference._popComponentFromContext(WOComponentReference.java:109)
>> at com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:128)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>> at er.extensions.components._private.ERXWOForm.invokeAction(ERXWOForm.java:218)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>> at com.webobjects.appserver._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>> at er.extensions.components.conditionals.ERXWOConditional.invokeChildrenAction(ERXWOConditional.java:116)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>> at er.extensions.components.conditionals.ERXWOConditional.invokeAction(ERXWOConditional.java:108)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>> at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
>> at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168)
>> at com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
>> at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
>> at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
>> at er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:168)
>> at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357)
>> at com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java:1745)
>> at er.extensions.appserver.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:119)
>> at er.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java:1991)
>> at er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedPage(ERXComponentRequestHandler.java:157)
>> at er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedSession(ERXComponentRequestHandler.java:235)
>> at er.extensions.appserver.ERXComponentRequestHandler._dispatchWithPreparedApplication(ERXComponentRequestHandler.java:268)
>> 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:2112)
>> at er.extensions.appserver.ERXApplication.dispatchRequest(ERXApplication.java:2077)
>> 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)
>>
>>
>> C.U.CW
>> --
>> The three great virtues of a programmer are Laziness, Impatience and Hubris. (Randal Schwartz)
>>
>>
>
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