On Tue, 2005-04-19 at 13:34, Pavel Vozenilek wrote:

"Simon Monckton" wrote:

...

Do any of you have experience passing BOOST vectors/arrays over CORBA? Short of writing a BOOST idl, is there a way of getting at and passing raw array data?

I am not sure what you mean by BOOST vector.

My mistake, I should be clearer. Something like boost::numeric::ublas::vector<double> aVector(4);

You need to convert data in Boost containers into/from Corba structures, like it needs to be done for any other C++ containers.

I guess the question is whether I can get at the raw data in 'aVector' and pass it out as though it was a standard Corba type such as double aCorbaVector[4]

There's no explicit Corba support in Boost.

I am trying to avoid an assignment step like: for(i=0;i<4;i++) aCorbaVector[i]=aVector[i]; In my fantasy world, I'd hoped I might be able to do something like: aCorbaVector = aVector.data(); where data() returns a pointer to the raw memory area.

/Pavel

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Thanks, Kevin...thats an interesting idea! A more difficult question is: Would the same technique be possible for boost::numeric::ublas::matrix<double> aMatrix(4,4)? Simon On Tue, 2005-04-19 at 15:23, Kevin Heifner wrote:

Simon Monckton wrote:

...

boost::numeric::ublas::vector<double> aVector(4);

[snip]

...

I am trying to avoid an assignment step like:

for(i=0;i<4;i++) aCorbaVector[i]=aVector[i];

In my fantasy world, I'd hoped I might be able to do something like:

aCorbaVector = aVector.data();

where data() returns a pointer to the raw memory area.

Although you should not depend on boost::numeric::ublas::vector<double> iterators being implemented with pointers, you could do this:

// IDL typedef sequence<double> DblSeq;

// C++ boost::numeric::ublas::vector<double> aVector(4)

DblSeq seq; seq.replace(aVector.size(), aVector.size(), aVector.begin(), 0);

The CORBA sequence also has a similar constructor.

KevinH