Re: [sapphire-dev] ClassCastException in action label

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Re: [sapphire-dev] ClassCastException in action label

From: "Konstantin Komissarchik" <konstantin.komissarchik@xxxxxxxxxx>
Date: Wed, 28 Sep 2011 16:46:43 -0700
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Please open a bug and I will take a look. Need to see if parent() function is sensible in this context, but it shouldn’t throw an exception in either case.

Also note that this _expression_ isn’t going to give you what you want. The ‘+’ operation is numeric addition only. It doesn’t overload to string concat. It will try to convert your string to numbers and add them. You’d want to write this like so:

<label>convert to ${ parent().BoundedTaskFlow ? "unbounded" : "bounded" } task flow</label>

From: sapphire-dev-bounces@xxxxxxxxxxx [mailto:sapphire-dev-bounces@xxxxxxxxxxx] On Behalf Of Shenxue Zhou
Sent: Wednesday, September 28, 2011 4:38 PM
To: Sapphire project
Subject: [sapphire-dev] ClassCastException in action label

I used this _expression_ for my action label:

<label>${"convert to " + (parent().BoundedTaskFlow ? "unbounded" : "bounded") + " task flow"}</label>

I got the following exception when the action is initilized. Is this an outage?

Caused by: java.lang.ClassCastException: org.eclipse.sapphire.ui.SapphireAction$3 cannot be cast to org.eclipse.sapphire.modeling.el.ModelElementFunctionContext

at org.eclipse.sapphire.modeling.el.ParentElementFunction$1.evaluate(ParentElementFunction.java:56)

at org.eclipse.sapphire.modeling.el.FunctionResult.refresh(FunctionResult.java:171)

at org.eclipse.sapphire.modeling.el.FunctionResult.<init>(FunctionResult.java:70)

at org.eclipse.sapphire.modeling.el.ParentElementFunction$1.<init>(ParentElementFunction.java:46)

at org.eclipse.sapphire.modeling.el.ParentElementFunction.evaluate(ParentElementFunction.java:46)

at org.eclipse.sapphire.modeling.el.DeferredFunction$1.init(DeferredFunction.java:60)

at org.eclipse.sapphire.modeling.el.FunctionResult.<init>(FunctionResult.java:69)

at org.eclipse.sapphire.modeling.el.DeferredFunction$1.<init>(DeferredFunction.java:49)

at org.eclipse.sapphire.modeling.el.DeferredFunction.evaluate(DeferredFunction.java:49)

at org.eclipse.sapphire.modeling.el.FunctionResult.initOperands(FunctionResult.java:91)