Re: visad.TypeException: ScalarType: name already used

• To: Cristy <cristy@xxxxxxxxxxxxxxxxxxxx>
• Subject: Re: visad.TypeException: ScalarType: name already used
• From: Dave Glowacki <dglo@xxxxxxxxxxxxx>
• Date: Mon, 06 Jul 1998 09:47:18 -0500

>> If I call the
>> server more than once it generates the exception:
>> 
>>   visad.TypeException: ScalarType: name already used
>> 
>> at this line
>> 
>>   RealType X=new RealType("X",null,null);
> 
> Great to hear you're making such good progress.  You can solve
> your problem like this:
>  
>   RealType X = RealType.getRealTypeByName("X");
>   if (X == null) X = new RealType("X",null,null);

An alternative solution (though probably not the one you want to use) is:

        RealType X;
        try {
          X = new RealType("X",null,null);
        } catch (TypeException e) {
          X = RealType.getRealTypeByName("X");
        }

Bill's solution is probably better for a server, since his code assumes
the variable already exists (which sounds like the more common case for
your application)

• References:
  • visad.TypeException: ScalarType: name already used
    • From: Cristy