[xsd-users] Re: Newbie question -- confused on simple point -- how to get the value of an item from my parsed document?

[Cook, Rich]

Answered my own question. 
The answer is 
valuestr = *frame.imuLatitude(); 


On Feb 28, 2012, at 1:42 PM, Cook, Rich wrote:

> I tried xsd cxx-parser and it just left me with lots more questions, like there does not seem to be any way to open my input file that I can see.  Bleh!  Can someone please help me parse this thing?  
> I swear I've read the docs, but somehow I still don't know: 
> How should I generate the parser using xsd? 
> How do I extract a value using C++?  
> Maybe because I don't know much about XML I'm missing something very obvious.  
> Thanks!  
> :-) 
> -- Rich 
> 
> On Feb 28, 2012, at 1:33 PM, Cook, Rich wrote:
> 
>> Oops, I guess "xsd cxx-parser" would be a better command to create a parser than "xsd cxx-tree".  I think that will unstick me for now.  
>> 
>> 
>> On Feb 28, 2012, at 1:21 PM, Cook, Rich wrote:
>> 
>>> Hello, 
>>> I have scoured the documentation and probably the answer is right there in front of me, but I hope someone on this list will be kind enough to answer for me. 
>>> 
>>> I have a .xsd file that defines a schema  that is like this: 
>>> 
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <DCData xmlns="http://www.example.org/DCDataSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.example.org/DCDataSchema DCDataSchema.xsd ">
>>> <FlightData>
>>> 	 some stuff...
>>> </FlightData>
>>> 
>>> <Frame>
>>>  <imuLatitude>39.7987679545233</imuLatitude>
>>>  <imuLongitude>-84.134795903862</imuLongitude>
>>> 	lots of other things...
>>> </Frame>
>>> <Frame>
>>>  <imuLatitude>40.7987679545233</imuLatitude>
>>>  <imuLongitude>-85.134795903862</imuLongitude>
>>> 	lots of other things...
>>> </Frame>
>>> </DCData>
>>> 
>>> I have been able to create a parser for this using xsd like this: 
>>> xsd-3.3.0/bin/xsd cxx-tree --generate-serialization PursuerDCDataSchema.xsd
>>> 
>>> This results of course in two files: PursuerDCDataSchema.{c,h}xx
>>> 
>>> What I'd like to do is assign the value of imuLatitude to a float in my code.  Something like this:  
>>> float latitude = some_sort_of_xsd_magic(); 
>>> 
>>> What I'm doing right now is:  
>>> mDCDataDoc = DCData(mCameraFilePath);  // works fine
>>> dch->numframes=mDCDataDoc->Frame().size();  // works fine
>>> FrameDataType frame = mDCDataDoc->Frame()[frameNum]; // works fine
>>> string valuestr; 
>>> frame.imuLatitude(valuestr);  // compiles, but does not change valuestr
>>> valuestr = frame.imuLatitude(); // compile time errors
>>> 
>>> What am I not getting right here?  
>>> 
>>> I see I have a choice here:  
>>> // imuLatitude
>>>  // 
>>>  typedef ::xml_schema::string imuLatitude_type;
>>>  typedef ::xsd::cxx::tree::optional< imuLatitude_type > imuLatitude_optional;
>>>  typedef ::xsd::cxx::tree::traits< imuLatitude_type, char > imuLatitude_traits;
>>> 
>>>  const imuLatitude_optional&
>>>  imuLatitude () const;
>>> 
>>>  imuLatitude_optional&
>>>  imuLatitude ();
>>> 
>>>  void
>>>  imuLatitude (const imuLatitude_type& x);
>>> 
>>>  void
>>>  imuLatitude (const imuLatitude_optional& x);
>>> 
>>>  void
>>>  imuLatitude (::std::auto_ptr< imuLatitude_type > p);
>>> 
>>> How do I go from these member functions to a value I can use from the file?  
>>> 
>>> Thanks for any help!  
>>> 
>>> -- 
>>> ✐Richard Cook   
>>> ✇ Lawrence Livermore National Laboratory
>>> Bldg-453 Rm-4024, Mail Stop L-557        
>>> 7000 East Avenue,  Livermore, CA, 94550, USA
>>> ☎ (office) (925) 423-9605    
>>> ☎ (fax) (925) 423-6961
>>> ---
>>> Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept.
>>> (opinions expressed herein are mine and not those of LLNL)
>>> 
>>> 
>>> 
>> 
>> -- 
>> ✐Richard Cook   
>> ✇ Lawrence Livermore National Laboratory
>> Bldg-453 Rm-4024, Mail Stop L-557        
>> 7000 East Avenue,  Livermore, CA, 94550, USA
>> ☎ (office) (925) 423-9605    
>> ☎ (fax) (925) 423-6961
>> ---
>> Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept.
>> (opinions expressed herein are mine and not those of LLNL)
>> 
>> 
>> 
> 
> -- 
> ✐Richard Cook   
> ✇ Lawrence Livermore National Laboratory
> Bldg-453 Rm-4024, Mail Stop L-557        
> 7000 East Avenue,  Livermore, CA, 94550, USA
> ☎ (office) (925) 423-9605    
> ☎ (fax) (925) 423-6961
> ---
> Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept.
> (opinions expressed herein are mine and not those of LLNL)
> 
> 
> 

-- 
✐Richard Cook   
✇ Lawrence Livermore National Laboratory
Bldg-453 Rm-4024, Mail Stop L-557        
7000 East Avenue,  Livermore, CA, 94550, USA
☎ (office) (925) 423-9605    
☎ (fax) (925) 423-6961
---
Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept.
(opinions expressed herein are mine and not those of LLNL)