[omniORB] Looking for examples of sequence manipulation

[Carlos]

El mié, 28-03-2007 a las 10:48 -0700, Perham, David A. (Mission Systems)
escribió:
> Howdy:
> 
> Looking for tips on how to manipulate sequences I came across this
> example in the mailing list archives. 
> The example demonstrates how to create the sequence in idl, and how to
> pass a pointer to the sequence in the implementation code.
> Unfortunately, it does not show the syntax required to access this
> pointer within the implementation after it is created.  In other
> words, after
> 
>  ptx = new MyInterface::randSeq(len,len,p);
> 
> I'd like to do something with the sequence, like assign a value to
> something within it. 
> For example if I have declared a sequence like this in IDL 
> Typedef struct theStruct 
> { 
>         short x ; 
>         short y ; 
> } theStructType ; 
> Typedef sequence <theStructType> theStructSeq ; 
> Boolean DoSomethingWithTheStructSeq( out theStructSeq myStructSeq) ;
> 
> And the implementation has 
> Bool DoSomethingWithTheStructSeq( theStructSeq_out ss ) 
> { 
>    theStructSeq *& ptx = ss.ptr() ; 
>    ptx = new theStructSeq(3) ; 
> 
> }
> 
> What is the syntax to assign a value to 'x' within an element of the
> sequence? 

(*ptx)[0].x = 29;

for example

and if you want to populate all the sequence

for (CORBA::ULong i = 0; i < ptx->length(); i++) {
	(*ptx)[i].x = ...;
	(*ptx)[i].y = ...;
}

I expect this helps you.

Cheers.

> Thanks, 
> Dave P 
> > Howdy, 
> > Hope the following sample helps you.  
> > 
> > IDL: > interface MyInterface  
> > {  
> > typedef sequence<octet> randSeq;  
> > void getRandSeq( out randSeq tx );  
> > }  
> > 
> > Object Implementation:  
> > void MyInterface_i::getRandSeq( randSeq_out tx ) 
>  > {  
> > MyInterface::randSeq*& ptx = tx.ptr();  
> > //.... > CORBA::Octet* p = new CORBA::Octet[ len ];  
> > //....  
> > ptx = new MyInterface::randSeq(len,len,p);  
> > } 
>  > 
> > Client: > void hello( MyInterface_ptr e )  
> > {  
> > MyInterface::randSeq_var tx;  
> > e->getRandSeq( tx.out() );  
> > long len = tx.length();  
> > for ( i = 0; i < len; i++ )  
> > {  
> > cout << tx[i] << endl; // access 
>  > }  
> > } 
> 
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