[xsd-users] Assignment of optional boolean attribute does not survive on the heap; possibly a bug?

[Boris Kolpackov]

Hi Andreas,

Andreas.Hackeloeer at bmw.de <Andreas.Hackeloeer at bmw.de> writes:

>     <xs:attribute name="SelectedSourceMap" type="xs:boolean" use="optional" />
>
> [...]
>
>   myMap.selectedSourceMap(true);            
>   bool problem = myMap.selectedSourceMap();

Because SelectedSourceMap is optional, what you get from selectedSourceMap()
is not the value, but the optional container (see the part of the 
documentation that discusses cardinalities). So the above code should
be something along these lines:

if (myMap.selectedSourceMap().preset ())
{
  // Attribute is present, get its value.
  //
  bool val = myMap.selectedSourceMap().get ();
}

Or, using the pointer notation:

if (myMap.selectedSourceMap())
{
  // Attribute is present, get its value.
  //
  bool val = *myMap.selectedSourceMap();
}

Boris