[redland-dev] [patch] librdf_stream_get_context

Lauri Aalto laalto at gmail.com
Mon May 5 09:53:25 BST 2008

Thank you for the question and patch.

On Fri, May 2, 2008 at 1:58 PM, Michael Stahl <Michael.Stahl at sun.com> wrote:
>  so, i noticed that librdf_stream_get_context returns a void*... why?

I don't really know.

I'd guess it comes from the fact that the underlying stream callback
get_method returns a void* as it will return librdf_statement* or
librdf_node*, depending on the flags passed in. That makes it easy to
use void*s internally and transfer the burden of type casting to

librdf_stream inherits its core design from librdf_iterator. According
to svn logs, latest significant changes to that design are from 2002.

>  imho it should return librdf_node* instead.
>  patch is attached.

Agree, returing librdf_node* makes sense. However, it would introduce
a slight API break and would not bring much benefit as such. I'd like
to hear dajobe's take on this issue.

The patch itself is not sufficient:

- prototypes in rdf_stream.h are not changed

- should keep rdf_stream consistent with rdf_iterator -> patch
rdf_iterator.[ch] as well


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