Support $refs with implicit url base

[tyilo]

When loading the following schema I get a warning:

Aug 06, 2021 12:31:26 PM net.jimblackler.jsonschemafriend.Schema <init>
WARNING: No match for #/$defs/reference

{
  "$schema": "https://json-schema.org/draft/2019-09/schema",
  "$id": "urn:defs-test",
  "title": "TEST",
  "type": "object",
  "properties": {
    "testReference": {
      "$ref": "#/$defs/reference",
    }
  },
  "$defs": {
    "reference": {
      "type": "string"
    }
  }
}

[tyilo]

Hmm, actually the problem seems to be that #/$defs/reference is not mapped to urn:defs-test#/$defs/reference

[jimblackler]

Thanks for the report and apologies for the delay investigating. There's been a problem with the scheme 'urn'. It seems it doesn't play nice with the constructor for java.net.URI, which I use throughout. I pushed enough to fix the precise issue above (thanks for the test case) but will need to do more digging to make sure it works throughout.

[olegshtch]

When I use urn: with $dynamicRef/$dynamicAnchor I get same error.

[jimblackler]

Sorry to read that; could you confirm that you are using 0.11.2.

If you are, could you paste an example of a failed case here? You can check it in advance on https://tryjsonschematypes.appspot.com/#validate

[olegshtch]

I got java.lang.IllegalStateException: java.net.URISyntaxException: Expected scheme-specific part at index 4: urn:

for

{
	"$schema": "https://json-schema.org/draft/2020-12/schema",
	"$id": "urn:java:common.proto.Message",
	"title": "Message itself",
	"type": "object",
	"properties": {
		"head": {
			"type": "object"
		},
		"body": {
			"$dynamicRef": "#body"
		}
	},
	"required": ["head", "body"],
	"additionalProperties": false,
	"$defs": {
	    "body": {
	        "$dynamicAnchor": "body",
	        "type": "object"
	    }
	}
}