dereferencing local files

[tiborsimko]

Problem:

$ workon domapping
$ cd dojson/contrib/marc21/schemas
$ domapping schema_to_mapping ./marc21.json
[...]
jsonschema.exceptions.RefResolutionError: unknown url type: bd00x

Input:

$ cat marc21.json 
{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "anyOf": [
        {"$ref": "bd00x#"},
        {"$ref": "bd01x09x#"},
        {"$ref": "bd1xx#"},
        {"$ref": "bd20x24x#"},
        {"$ref": "bd25x28x#"},
        {"$ref": "bd3xx#"},
        {"$ref": "bd4xx#"},
        {"$ref": "bd5xx#"},
        {"$ref": "bd6xx#"},
        {"$ref": "bd70x75x#"},
        {"$ref": "bd76x78x#"},
        {"$ref": "bd80x83x#"},
        {"$ref": "bd84188x#"}
    ]
}

Possible solutions:

• use reasonable URIs?
• join files together? (is anyOf nicely supported?)
• fix file discovery in case of local files?

[nharraud]

We can suppose that if the schema does not have an id and we have the file path (because domapping is called like this: domapping schema_to_mapping ./marc21.json) we can use the file URL as its id. However we won't be able to do it if domapping's input is stdin ( as in cat marc21.json | domapping schema_to_mapping).