Re: Cannot iterate HashSet

[Yulia]

The interesting thing is that there is no nulls in output. If it were
null I probably could see this error in GWT Shell, but in hosted
browser everyting was ok. The following code also gives me same error:
@Override
public String toString() {
//return  + getValue();
return getValue() == null ?  : getValue().toString();
}

I'm using GWT 1.5.2, I'll try to swith to newer version some day and
check if this error will still appear.
Anyway, it works with  + getValue() by now.

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Re: Cannot iterate HashSet

[Bruce Hatt]

The difference is in how your string is created.
I would make a guess that getValue() returns null at some point and
the call to toString() generates a NPE type error in javascript.
Concatenation like in your second snippet, will create a new string
and concatenate the return of getValue(). Null is okay to
concatenate.

To verify, do a check for null or look for null in your output.


On May 24, 8:05 am, Yulia yuli...@gmail.com wrote:
 After all day beating my head against the keybord I found where the
 problem was. I reverted all changes to stable version and statrted to
 add code bit by bit and noticed that after changes in
 AttributeValue.toString() method my program started to fail again.

 This code doesn't work:
     @Override
     public String toString() {
         return getValue().toString();
     }

 But this code works:
     @Override
     public String toString() {
         return +getValue();
     }

 But it should be the same... Maybe I misunderstand something, can
 somebody explain me the difference?

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Re: Cannot iterate HashSet

[Yulia]

I replaced HashSet with Vector - same problem
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Re: Cannot iterate HashSet

[Yulia]

After all day beating my head against the keybord I found where the
problem was. I reverted all changes to stable version and statrted to
add code bit by bit and noticed that after changes in
AttributeValue.toString() method my program started to fail again.

This code doesn't work:
@Override
public String toString() {
return getValue().toString();
}

But this code works:
@Override
public String toString() {
return +getValue();
}

But it should be the same... Maybe I misunderstand something, can
somebody explain me the difference?
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