LD Cache: requesting non-cached resources

[Frans Knibbe <fr...@geodan.nl>]

Hello,

Marmotta can show users the triples in a resource like
http://example.org/resource123. For this I have configured my http server
to rewrite http://example.org/resource123 to
http://example.org/marmotta/resource?uri=http://example.org/resource123. I
see this URI in turn is 303-redirected to
http://example.org/marmotta/meta/text/html?uri=
http://example.org/resource123, when the URI is requested by a web browser.

That gives a HTML page where data are formatted as a table with column
headings 'property', 'has value', 'context' and 'info'. The URIs in the
data are rendered as clickable hyperlinks. Clicking on some of the data
URIs goes well, I get new page in the same format with the data describing
the URI I clicked, even when the data come from other servers. Obviously in
those cases the data have been cached by Marmotta, a nice feature. But
other URIs for some reason can not be served from the cache and
consequently get a 404 Not Found error when clicked. The problem in such
cases is that the URI is accessible, but not as
http://example.org/marmotta/resource?uri=<the URI>. And the page generated
by the http://example.org/marmotta/meta/text/html page seems to redirect
each URI to  http://example.org/marmotta/resource?uri=<some URI>. It seems
to me that that should only happen if there is data from that URI in
Marmotta's LD Cache. But if I look at the generated page, I see all <a
href> hyperlinks have an attribute class="ldcache", causing
http://example.org/marmotta/resource?uri= to be prefixed to the URI.

Shouldn't that  class="ldcache" only be assigned to resources that are
actually in the LD Cache? What happens now is that resources that are
accessible on the web seem not be be accessible because they are not cached
in Marmotta. Or perhaps it should be that when a resource can not be found
in the LD Cache, the URI should be used to request in on the web?

Blacklisting certain prefixes in the LD Cache configuration does not seem
to help: even URI's with a blacklisted prefix still get the
class="ldcache" attribute.
Disabling the LD Cache altogether does not solve the problem, the
class="ldcache" attribute is still assigned to all URIs.

Can anyone help or explain what I could do to solve the problem?

Thanks in advance,
Frans