Description

Currently we save every URI ever qname'd forever in here: https://github.com/RDFLib/rdflib/blob/master/rdflib/namespace.py#L289

If you serialize a big graph in a store that is off disk, we may run out of memory.

Either:

• Add a lru_cache (from py3 functools + this 2.7 implementation
• Depend on

all of the cors_catch wrapper stuff should be moved to http_request_expansion

Example
https://github.com/Anniepoo/identity/blob/master/prolog/identity/identity.pl

The handling of binding substitution fails for queries of the form select (func(?x) as ?y). For a binding x=foo the output is select (func('foo' as ?x) as ?y) when it should be select (func('foo') as ?y). The current code only works for select ?x ?y ?z type queries. Regex needs to be modified to ignore patterns that are preceeded by 'as'.

Hi, Is it possible to add in readme more information about support?

• What are the feature necessary for LDflex to work?
• Is Node supported?
• Are browsers supported? Which ones?
• Can polyfills help?

As far as I can see this should be allowed but it doesn't work. It discovered it because some HttpClients in Java send the Accept header with HEAD but others do not.

curl -I -H 'Accept:' http://localhost:3000/

The server reports:

2021-02-04T15:44:25.897Z [ExpressHttpServerFactory] error: NotImplementedHttpError: No handler supports the given input: [Only errors are supported, O