Hi List,
I'm getting some log messages sometimes (see at the end) about
properties being null (whereas I didn't get them before in JavaFX 2.2).
Is this intended as an informative message to the developer, something I
should report, or just debug code for the JavaFX team?
In this case, the binding is null, and that's fine -- it will be
populated later, but the binding is already in place -- I thought JavaFX
was designed to allow nulls in a chain of bindings and
fall back to reasonable defaults for things like Strings, numbers etc?
Am I doing something wrong?
Code:
{
private final ObjectProperty<Media> data = new SimpleObjectProperty<>();
public ObjectProperty<Media> dataProperty() { return data; }
protected final ObjectBinding<ObservableList<Casting>> castings =
Bindings.select(dataProperty(), "castings");
}
Log:
Jun 05, 2013 9:15:55 PM
com.sun.javafx.binding.SelectBinding$SelectBindingHelper getObservableValue
WARNING: Exception while evaluating select-binding [castings]
Jun 05, 2013 9:15:55 PM
com.sun.javafx.binding.SelectBinding$SelectBindingHelper getObservableValue
WARNING: Property 'castings' in ObjectProperty [bound, value: null] is null
java.lang.NullPointerException
at
com.sun.javafx.binding.SelectBinding$SelectBindingHelper.getObservableValue(SelectBinding.java:481)
at
com.sun.javafx.binding.SelectBinding$AsObject.computeValue(SelectBinding.java:92)
at javafx.beans.binding.ObjectBinding.get(ObjectBinding.java:152)
at
javafx.beans.binding.ObjectExpression.getValue(ObjectExpression.java:49)
at
com.sun.javafx.binding.ExpressionHelper.addListener(ExpressionHelper.java:53)
at
javafx.beans.binding.ObjectBinding.addListener(ObjectBinding.java:71)
at
javafx.beans.property.ObjectPropertyBase.bind(ObjectPropertyBase.java:170)
at
hs.mediasystem.TitledBlockSample.createCastingsRow(TitledBlockSample.java:114)
at hs.mediasystem.TitledBlockSample.start(TitledBlockSample.java:78)
at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:810)
at com.sun.javafx.application.PlatformImpl$6.run(PlatformImpl.java:260)
at
com.sun.javafx.application.PlatformImpl$5$1.run(PlatformImpl.java:226)
at
com.sun.javafx.application.PlatformImpl$5$1.run(PlatformImpl.java:223)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:223)
at
com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at
com.sun.glass.ui.win.WinApplication.access$300(WinApplication.java:39)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:101)
at java.lang.Thread.run(Thread.java:724)
Regards,
--John
