From fe19ca2ccd9d201d0f8da210cc6340217e4a3881 Mon Sep 17 00:00:00 2001
From: Henry Andrews <henry@cloudflare.com>
Date: Sat, 16 Jun 2018 20:04:46 -0700
Subject: [PATCH 1/2] Remove default value for meta-schema

With default values now having implication for both assertions
and annotation collection, it no longer makes sense to have
a default value for subschemas.

Keywords such as "additionalProperties" now collect annotation
information based on the instance properties to which thier
subschema(s) are applied.  This means that a subschema of true
will cause a property to appear in the annotation, while an
absent subschema will not.  Therefore, a default of true does
not match the annotation collection behavior and is not accurate.

Additionally, as written this has always been problematic, as
it claims a default true value for "not", which would in fact
cause all schemas without "not" to fail.
---
 schema.json | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/schema.json b/schema.json
index 182eefb0..7addb46b 100644
--- a/schema.json
+++ b/schema.json
@@ -106,8 +106,7 @@
             "anyOf": [
                 { "$ref": "#" },
                 { "$ref": "#/$defs/schemaArray" }
-            ],
-            "default": true
+            ]
         },
         "maxItems": { "$ref": "#/$defs/nonNegativeInteger" },
         "minItems": { "$ref": "#/$defs/nonNegativeIntegerDefault0" },
@@ -162,13 +161,12 @@
         "format": { "type": "string" },
         "contentMediaType": { "type": "string" },
         "contentEncoding": { "type": "string" },
-        "if": {"$ref": "#"},
-        "then": {"$ref": "#"},
-        "else": {"$ref": "#"},
+        "if": { "$ref": "#" },
+        "then": { "$ref": "#" },
+        "else": { "$ref": "#" },
         "allOf": { "$ref": "#/$defs/schemaArray" },
         "anyOf": { "$ref": "#/$defs/schemaArray" },
         "oneOf": { "$ref": "#/$defs/schemaArray" },
         "not": { "$ref": "#" }
-    },
-    "default": true
+    }
 }

From ec6472783e49d4882f134f2a7a0bbd73c0a7fd2c Mon Sep 17 00:00:00 2001
From: Henry Andrews <henry@cloudflare.com>
Date: Sat, 16 Jun 2018 20:10:57 -0700
Subject: [PATCH 2/2] Add defaults for LDO schemas

While it no longer makes sense to have a universal default schema
value (see previous commit), the LDO schema keywords have specific
implications which do match one or the other boolean schema.

This commit adds the appropraite one.  By default, a resource is
assumed to provide or accept any structure as its representation,
accept any structure for processing if it does processing at all,
and to allow any header usage.  So targetSchema, submissionSchema,
and headerSchema all default to true.

However, by default, URI templates may not be resolved from input,
so headerSchema defaults to false.
---
 links.json | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/links.json b/links.json
index addd1f06..77370131 100644
--- a/links.json
+++ b/links.json
@@ -29,7 +29,8 @@
                     "format": "uri-template"
                 },
                 "hrefSchema": {
-                    "$ref": "http://json-schema.org/draft-08/hyper-schema#"
+                    "$ref": "http://json-schema.org/draft-08/hyper-schema#",
+                    "default": false
                 },
                 "templatePointers": {
                     "type": "object",
@@ -55,21 +56,24 @@
                     "type": "string"
                 },
                 "targetSchema": {
-                    "$ref": "http://json-schema.org/draft-08/hyper-schema#"
+                    "$ref": "http://json-schema.org/draft-08/hyper-schema#",
+                    "default": true
                 },
                 "targetMediaType": {
                     "type": "string"
                 },
                 "targetHints": { },
                 "headerSchema": {
-                    "$ref": "http://json-schema.org/draft-08/hyper-schema#"
+                    "$ref": "http://json-schema.org/draft-08/hyper-schema#",
+                    "default": true
                 },
                 "submissionMediaType": {
                     "type": "string",
                     "default": "application/json"
                 },
                 "submissionSchema": {
-                    "$ref": "http://json-schema.org/draft-08/hyper-schema#"
+                    "$ref": "http://json-schema.org/draft-08/hyper-schema#",
+                    "default": true
                 },
                 "$comment": {
                     "type": "string"