Merge pull request #293 from pradeepsixer/compat_matrix

Compatibility matrix

Author: stevehu

doc/compatibility.md

@@ -0,0 +1,76 @@
+
+### Legend
+
+Symbol | Meaning |
+:-----:|---------|
+🟢 | Fully implemented
+🟡 | Partially implemented
+🔴 | Not implemented
+🚫 | Not defined in Schema Version.
+
+### Compatibility with JSON Schema versions
+
+ Validation Keyword/Schema      |  Draft 4       | Draft 6    | Draft 7     | Draft 2019-09 |
+----------------      |:--------------:|:-------:   |:-------:    |:-------------:|
+$ref | 🟢 | 🟢 | 🟢 | 🟢
+additionalProperties | 🟢 | 🟢 | 🟢 | 🟢
+additionalItems | 🟢 | 🟢 | 🟢 | 🟢
+allOf | 🟢 | 🟢 | 🟢  | 🟢
+anyOf | 🟢 | 🟢 | 🟢 | 🟢
+const | 🚫 | 🟢 | 🟢 | 🟢
+contains | 🚫 | 🟢 | 🟢 | 🟢
+contentEncoding | 🚫 | 🚫 | 🔴 | 🔴
+contentMediaType | 🚫 | 🚫 | 🔴 | 🔴
+dependencies | 🟢 | 🟢 |🟢 | 🟢
+enum | 🟢 | 🟢 | 🟢 | 🟢
+exclusiveMaximum (boolean) | 🟢 | 🚫 | 🚫 | 🚫
+exclusiveMaximum (numeric) | 🚫 | 🟢 | 🟢 | 🟢
+exclusiveMinimum (boolean) | 🟢 | 🚫 | 🚫 | 🚫
+exclusiveMinimum (numeric) | 🚫 | 🟢 | 🟢 | 🟢
+items | 🟢 | 🟢 | 🟢 | 🟢
+maximum | 🟢 | 🟢 | 🟢 | 🟢
+maxItems | 🟢 | 🟢 | 🟢 | 🟢
+maxLength | 🟢 | 🟢 | 🟢 | 🟢
+maxProperties | 🟢 | 🟢 | 🟢 | 🟢
+minimum | 🟢 | 🟢 | 🟢 | 🟢
+minItems | 🟢 | 🟢 | 🟢 | 🟢
+minLength | 🟢 | 🟢 | 🟢 | 🟢
+minProperties | 🟢 | 🟢 | 🟢 | 🟢
+multipleOf | 🟢 | 🟢 | 🟢 | 🟢
+not | 🟢 | 🟢 | 🟢 | 🟢
+oneOf | 🟢 | 🟢 | 🟢 | 🟢
+pattern | 🟢 | 🟢 | 🟢 | 🟢
+patternProperties | 🟢 | 🟢 | 🟢 | 🟢
+properties | 🟢 | 🟢 | 🟢 | 🟢
+propertyNames | 🚫 | 🔴 | 🔴 | 🔴
+required | 🟢 | 🟢 | 🟢 | 🟢 
+type | 🟢 | 🟢 | 🟢 | 🟢
+uniqueItems | 🟢 | 🟢 | 🟢 | 🟢
+
+### Semantic Validation (Format)
+
+Format | Draft 4 | Draft 6 | Draft 7 | Draft 2019-09 |
+-------|---------|---------|---------|---------------|
+date |🚫 | 🚫 | 🟢 | 🟢
+date-time | 🟢 | 🟢 | 🟢 | 🟢
+duration | 🚫 | 🚫 | 🔴 | 🔴
+email | 🟢 | 🟢 | 🟢 | 🟢
+hostname | 🟢 | 🟢 | 🟢 | 🟢
+idn-email | 🚫 | 🚫 | 🔴 | 🔴
+idn-hostname | 🚫 | 🚫 | 🔴 | 🔴
+ipv4 | 🟢 | 🟢 | 🟢 | 🟢
+ipv6 | 🟢 | 🟢 | 🟢 | 🟢
+iri | 🚫 | 🚫 | 🔴 | 🔴
+iri-reference | 🚫 | 🚫 | 🔴 | 🔴
+json-pointer | 🚫 | 🔴 | 🔴 | 🔴
+relative-json-pointer | 🚫 | 🔴 | 🔴 | 🔴
+regex | 🚫 | 🚫 | 🔴 | 🔴
+time | 🚫 | 🚫 | 🟢 | 🟢
+uri | 🟢 | 🟢 | 🟢 | 🟢
+uri-reference | 🚫 | 🔴 | 🔴 | 🔴
+uri-template | 🚫 | 🔴 | 🔴 | 🔴
+uuid | 🚫 | 🚫 | 🟢 | 🟢
+
+### Footnotes
+1. Note that the validation are only optional for some of the keywords/formats.
+2. Refer to the corresponding JSON schema for more information on whether the keyword/format is optional or not.