Hello ULC-Folks,
after our ULC upgrade from 6.1.1 to 2008u3 we have a crash due to the usage of
a validating table cell editor.
java.lang.RuntimeException: Unable to create new instance of cell component
at
com.ulcjava.base.server.CellComponentTemplateStorage.createTemplate(CellComponentTemplateStorage.java:26)
at
com.ulcjava.base.server.CellComponentTemplateStorage.getTemplate(CellComponentTemplateStorage.java:38)
at com.ulcjava.base.application.ULCTable.a(ULCTable.java:380)
at
com.ulcjava.base.application.ULCTable.requestCellEditorComponents(ULCTable.java:495)
at
com.ulcjava.base.application.ULCTable$ULCTableDispatcher.requestCellEditorComponents(ULCTable.java:7)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
com.ulcjava.base.shared.internal.ReflectionUtilities.invokeMethod(ReflectionUtilities.java:51)
at
com.ulcjava.base.application.ULCProxy.processInvokeULC(ULCProxy.java:67)
at
com.ulcjava.base.application.ULCProxy.handleRequest(ULCProxy.java:401)
at
com.ulcjava.base.server.ULCSession.processRequest(ULCSession.java:234)
at
com.ulcjava.base.server.ULCSession.processRequests(ULCSession.java:387)
at
com.ulcjava.base.development.DevelopmentContainerAdapter.processRequests(DevelopmentContainerAdapter.java:4)
at
com.ulcjava.base.development.DevelopmentConnector.sendRequests(DevelopmentConnector.java:31)
at com.ulcjava.base.client.UISession$k_.run(UISession$k_.java:66)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.InstantiationException:
com.canoo.ulc.community.validation.ULCValidationTextField
at java.lang.Class.newInstance0(Class.java:340)
at java.lang.Class.newInstance(Class.java:308)
at
com.ulcjava.base.server.CellComponentTemplateStorage.createTemplate(CellComponentTemplateStorage.java:27)
... 17 more
I investigated as far as the non available source code permits. My
resuluts/guess is the following:
The problem is caused by our ValidatingCellEditor (implements ITableCellEditor)
which uses a ULCValidationTextField as editor component. This class does not
posess a parameterless constructor, but the CellComponentTemplateStorage
appears to try to create a new instance (beside the already existing one, which
is always returned by getTableCellEditorComponent). This fails due to the
missing constructor -> crash.
How can i circumvent this problem?
Kind regards
Maik Scheibler
Mit freundlichen Grüßen
Maik Scheibler
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