back again with another $ref question

[rlyacht]

This one will likely also be my error, but I just cant figure it out.

In a nutshell:  I am using $ref to refer to types defined in local files.  If I   structure the file as  I've seen in examples, using a "definitions" section, I get an exception from urlopen when I run jsonschema, that says the file is not found.  If I just put the definition of the type at the "top level", then the $ref works fine. Even putting in an absolute path (which I don't want to do anyway) doesn't fix my issue.

Here are some toy examples that illustrate my problem, starting with the one that works ok.  I appreciate anyone's having a look.

good.schema.json

{
    "$schema": "http://json-schema.org/draft-04/schema#",

    "properties" : {
        "ablah" : {"$ref" : "file:blah-flat.json"}
    }    
}

blah-flat.json

{
    "type" : "string"
}

blah-example.json

{
    "ablah" : "hi mom"
}

Result - no errors

> jsonschema -i blah-example.json  good.schema.json
>

So this works fine.  Here's where I have a problem.  I use a different file to define the type for "ablah":

blahdef.json

{
    "definitions" : {
      "Blah" : {
        "type" : "string"
      }
    }
}

Then have the schema refer to it like this:

problem.schema.json

{
    "$schema": "http://json-schema.org/draft-04/schema#",

    "properties" : {
    "ablah" : {"$ref" : "file:blahdef.json#/definitions/Blah"}
    }    
}

and I get this error from jsonschema -i blah-example.json problem.schema.json:

jsonschema.exceptions.RefResolutionError: <urlopen error [Errno 2] No such file or directory: '/blahdef.json'>
>

[rlyacht]

I found the answer  in this post. It explains how to set the resolver appropriately.