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gregsdennisgregsdennis
committedOct 22, 2024·
add a root object to the output
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‎output/jsonschema-validation-output-machines.md

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@@ -2,74 +2,88 @@
22

33
JSON Schema is defined to be platform-independent. As such, to increase
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compatibility across platforms, implementations SHOULD conform to a standard
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validation output format. This specification describes the minimum requirements
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for machine consumers to properly interpret validation results.
5+
validation output format. This specification describes a number of output
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formats intended for machine consumers.
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## Table of Contents
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## Schema Identifiers
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The output defined in this specification requires that the evaluation root be
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defined with an absolute IRI, i.e. using the `$id` keyword. In the event an
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absolute IRI has not been defined, the implementation MUST generate one.
15-
16-
There are no requirements on the form of IRI itself, except that it MUST be
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absolute.
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The output defined in this specification requires that an initial IRI is defined
13+
per [JSON Schema Core](./json-schema-core#initial-base) "Initial Base IRI" with an
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[absolute IRI](#rfc3987). In the event an absolute IRI has not been defined, the
15+
implementation MUST generate one.
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## Textual Format and Encoding
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2119
JSON Schema output is defined using the JSON Schema data instance model as
22-
described in [JSON Schema](#json-schema) "Instance Data Model". Implementations
23-
MAY deviate from this in their internal modelling, as supported by their
24-
specific languages and platforms, however it is RECOMMENDED that the output be
25-
convertible to the JSON format defined herein via serialization or other means.
20+
described in [JSON Schema Core](./jsonschema-core#data-model) "Instance Data
21+
Model". Implementations MAY deviate from this in their internal modelling, as
22+
supported by their specific languages and platforms, however it is RECOMMENDED
23+
that the output be convertible to the JSON format defined herein via
24+
serialization or other means.
25+
26+
## The Output Object
27+
28+
The output of a subschema validation is a JSON object which contains general
29+
information about the validation as well as a set of
30+
[output units](#output-unit) which contain specifics.
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The root object MUST contain the following properties:
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34+
| Property | Value |
35+
|:-|:-|
36+
| `dialect` | The `$schema` IRI of the evaluating schema. |
37+
| `schema` | The identifier `$id` or otherwise used to identify the evaluating schema. |
38+
| `valid` | A boolean indicating the overall validation result. |
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## Minimum Information
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For the "list" and "hierarchical" formats, the following is also required:
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Beyond the simplistic "flag" output, additional information is useful to aid in
30-
debugging evaluation of an instance by a schema.
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| `details` | A collection of output units to provide additional details. Must be an array, even when containing a single output unit. |
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The output of a subschema validation is considered an "output unit." The
33-
contents of each output unit is specified by this section.
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### Output Unit
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An output unit describes the evaluation of a single subschema against the appropriate instance location.
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Each output unit MUST contain the [validation result](#validation-result) for
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the associated subschema as well as the following information defined by
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[JSON Schema](#json-schema) "Output Formatting":
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[JSON Schema](./jsonschema-core#output) "Output Formatting":
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39-
- Evaluation Path
40-
- Schema Location
41-
- Instance Location
52+
- Evaluation Path (as `evaluationPath`)
53+
- Schema Location (as `schemaLocation`)
54+
- Instance Location (as `instanceLocation`)
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The following information MAY be included conditionally:
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4558
- When subschema validation has succeeded
46-
- Annotations
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- Annotations (as `annotations`)
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- When subschema validation has failed
48-
- Errors
49-
- Dropped Annotations
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- Errors (as `errors`)
62+
- Dropped Annotations (as `droppedAnnotations`)
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When including this information, the indicated property names MUST be used.
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Implementations MAY elect to provide additional information.
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### Validation Result {#validation-result}
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#### Validation Result {#validation-result}
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The validation result is a boolean that indicates whether the local instance
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passed validation by the local subschema.
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The JSON key for these additional results is `valid`.
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### Results from Subschemas
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#### Results from Subschemas
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Evaluation results generated by applying a subschema to the instance or a child
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Similar to the root object's `details` property, this property contains
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evaluation results generated by applying a subschema to the instance or a child
6379
of the instance. Keywords which have multiple subschemas (e.g. `anyOf`) will
6480
generally generate an output unit for each subschema. In order to accommodate
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potentially multiple results, the value of this property MUST be an array of
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output units, even if only a single output unit is produced.
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For "list", this property will appear only at the root output unit and will hold
69-
all output units in a flat list.
70-
71-
For "hierarchical", this property will contain results in a tree structure where
72-
each output unit may itself have further nested results.
84+
This property of the output unit is only used for the "hierarchical" format and
85+
will contain results in a tree structure where each output unit may itself have
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further nested results.
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The sequence of output units within this list is not specified and MAY be
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determined by the implementation. Sets of output units are considered equivalent
@@ -229,6 +243,8 @@ omitted.
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```json "Flag Results"
231245
{
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"dialect": "https://json-schema.org/draft/next/schema",
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"schema": "https://json-schema.org/schemas/example",
232248
"valid": false
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}
234250
```
@@ -241,21 +257,17 @@ check the other three. The logic can simply return with success.
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### List
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The "list" structure is a flat list of output units contained within a root
245-
output unit.
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The root output unit contains `valid` for the overall result and `details` for
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the list of specific results. All other information is explicitly omitted from
249-
the root output unit. If the root schema produces errors or annotations, then
250-
the output node for the root MUST be present within the root output unit's
251-
`details` list with those errors or annotations.
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The "list" structure is a flat list of output units contained within the root
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object's `details` array.
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253263
Output units which do not contain errors or annotations SHOULD be excluded from
254264
this format, however implementations MAY choose to include them for
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completeness.
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```json "Failing Results"
258268
{
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"dialect": "https://json-schema.org/draft/next/schema",
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"schema": "https://json-schema.org/schemas/example",
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"valid": false,
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"details": [
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{
@@ -291,6 +303,8 @@ completeness.
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```json "Passing Results"
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{
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"dialect": "https://json-schema.org/draft/next/schema",
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"schema": "https://json-schema.org/schemas/example",
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"valid": true,
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"details": [
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{
@@ -368,180 +382,195 @@ The location properties of the root output unit MAY be omitted.
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```json "failing Results
370384
{
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"dialect": "https://json-schema.org/draft/next/schema",
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"schema": "https://json-schema.org/schemas/example",
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"valid": false,
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"evaluationPath": "",
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"schemaLocation": "https://json-schema.org/schemas/example#",
374-
"instanceLocation": "",
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"details": [
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{
377390
"valid": false,
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"evaluationPath": "/properties/foo",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo",
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"instanceLocation": "/foo",
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"evaluationPath": "",
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"schemaLocation": "https://json-schema.org/schemas/example#",
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"instanceLocation": "",
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"details": [
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{
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"valid": false,
384-
"evaluationPath": "/properties/foo/allOf/0",
385-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/0",
397+
"evaluationPath": "/properties/foo",
398+
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo",
386399
"instanceLocation": "/foo",
387-
"errors": {
388-
"required": "Required properties [\"unspecified-prop\"] were not present"
389-
}
390-
},
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{
392-
"valid": false,
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"evaluationPath": "/properties/foo/allOf/1",
394-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1",
395-
"instanceLocation": "/foo",
396-
"droppedAnnotations": {
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"properties": [ "foo-prop" ],
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"title": "foo-title"
399-
},
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"details": [
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{
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"valid": false,
403-
"evaluationPath": "/properties/foo/allOf/1/properties/foo-prop",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/properties/foo-prop",
405-
"instanceLocation": "/foo/foo-prop",
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"evaluationPath": "/properties/foo/allOf/0",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/0",
405+
"instanceLocation": "/foo",
406406
"errors": {
407-
"const": "Expected \"1\""
408-
},
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"droppedAnnotations": {
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"title": "foo-prop-title"
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"required": "Required properties [\"unspecified-prop\"] were not present"
411408
}
412409
},
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{
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"valid": true,
415-
"evaluationPath": "/properties/foo/allOf/1/additionalProperties",
416-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/additionalProperties",
417-
"instanceLocation": "/foo/other-prop"
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"valid": false,
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"evaluationPath": "/properties/foo/allOf/1",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1",
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"instanceLocation": "/foo",
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"droppedAnnotations": {
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"properties": [ "foo-prop" ],
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"title": "foo-title"
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},
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"details": [
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{
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"valid": false,
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"evaluationPath": "/properties/foo/allOf/1/properties/foo-prop",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/properties/foo-prop",
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"instanceLocation": "/foo/foo-prop",
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"errors": {
426+
"const": "Expected \"1\""
427+
},
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"droppedAnnotations": {
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"title": "foo-prop-title"
430+
}
431+
},
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{
433+
"valid": true,
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"evaluationPath": "/properties/foo/allOf/1/additionalProperties",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/additionalProperties",
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"instanceLocation": "/foo/other-prop"
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}
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]
418439
}
419440
]
420-
}
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]
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},
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{
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"valid": false,
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"evaluationPath": "/properties/bar",
426-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/bar",
427-
"instanceLocation": "/bar",
428-
"details": [
441+
},
429442
{
430443
"valid": false,
431-
"evaluationPath": "/properties/bar/$ref",
432-
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar",
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"evaluationPath": "/properties/bar",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/bar",
433446
"instanceLocation": "/bar",
434-
"droppedAnnotations": {
435-
"properties": [ "bar-prop" ],
436-
"title": "bar-title"
437-
},
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"details": [
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{
440449
"valid": false,
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"evaluationPath": "/properties/bar/$ref/properties/bar-prop",
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"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar/properties/bar-prop",
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"instanceLocation": "/bar/bar-prop",
444-
"errors": {
445-
"minimum": "2 is less than or equal to 10"
446-
},
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"evaluationPath": "/properties/bar/$ref",
451+
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar",
452+
"instanceLocation": "/bar",
447453
"droppedAnnotations": {
448-
"title": "bar-prop-title"
449-
}
454+
"properties": [ "bar-prop" ],
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"title": "bar-title"
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},
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"details": [
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{
459+
"valid": false,
460+
"evaluationPath": "/properties/bar/$ref/properties/bar-prop",
461+
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar/properties/bar-prop",
462+
"instanceLocation": "/bar/bar-prop",
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"errors": {
464+
"minimum": "2 is less than or equal to 10"
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},
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"droppedAnnotations": {
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"title": "bar-prop-title"
468+
}
469+
}
470+
]
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}
451472
]
452473
}
453474
]
454475
}
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]
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}
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457479
```
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459481
```json "Passing Results
460482
{
461-
"valid": true,
462-
"evaluationPath": "",
463-
"schemaLocation": "https://json-schema.org/schemas/example#",
464-
"instanceLocation": "",
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"annotations": {
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"title": "root",
467-
"properties": [
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"foo",
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"bar"
470-
]
471-
},
483+
"dialect": "https://json-schema.org/draft/next/schema",
484+
"schema": "https://json-schema.org/schemas/example",
485+
"valid": false,
472486
"details": [
473487
{
474488
"valid": true,
475-
"evaluationPath": "/properties/foo",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo",
477-
"instanceLocation": "/foo",
489+
"evaluationPath": "",
490+
"schemaLocation": "https://json-schema.org/schemas/example#",
491+
"instanceLocation": "",
492+
"annotations": {
493+
"title": "root",
494+
"properties": [
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"foo",
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"bar"
497+
]
498+
},
478499
"details": [
479500
{
480501
"valid": true,
481-
"evaluationPath": "/properties/foo/allOf/0",
482-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/0",
483-
"instanceLocation": "/foo"
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},
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{
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"valid": true,
487-
"evaluationPath": "/properties/foo/allOf/1",
488-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1",
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"evaluationPath": "/properties/foo",
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"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo",
489504
"instanceLocation": "/foo",
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"annotations": {
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"title": "foo-title",
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"properties": [
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"foo-prop"
494-
],
495-
"additionalProperties": [
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"unspecified-prop"
497-
]
498-
},
499505
"details": [
500506
{
501507
"valid": true,
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"evaluationPath": "/properties/foo/allOf/1/properties/foo-prop",
503-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/properties/foo-prop",
504-
"instanceLocation": "/foo/foo-prop",
505-
"annotations": {
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"title": "foo-prop-title"
507-
}
508+
"evaluationPath": "/properties/foo/allOf/0",
509+
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/0",
510+
"instanceLocation": "/foo"
508511
},
509512
{
510513
"valid": true,
511-
"evaluationPath": "/properties/foo/allOf/1/additionalProperties",
512-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/additionalProperties",
513-
"instanceLocation": "/foo/unspecified-prop"
514+
"evaluationPath": "/properties/foo/allOf/1",
515+
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1",
516+
"instanceLocation": "/foo",
517+
"annotations": {
518+
"title": "foo-title",
519+
"properties": [
520+
"foo-prop"
521+
],
522+
"additionalProperties": [
523+
"unspecified-prop"
524+
]
525+
},
526+
"details": [
527+
{
528+
"valid": true,
529+
"evaluationPath": "/properties/foo/allOf/1/properties/foo-prop",
530+
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/properties/foo-prop",
531+
"instanceLocation": "/foo/foo-prop",
532+
"annotations": {
533+
"title": "foo-prop-title"
534+
}
535+
},
536+
{
537+
"valid": true,
538+
"evaluationPath": "/properties/foo/allOf/1/additionalProperties",
539+
"schemaLocation": "https://json-schema.org/schemas/example#/properties/foo/allOf/1/additionalProperties",
540+
"instanceLocation": "/foo/unspecified-prop"
541+
}
542+
]
514543
}
515544
]
516-
}
517-
]
518-
},
519-
{
520-
"valid": true,
521-
"evaluationPath": "/properties/bar",
522-
"schemaLocation": "https://json-schema.org/schemas/example#/properties/bar",
523-
"instanceLocation": "/bar",
524-
"details": [
545+
},
525546
{
526547
"valid": true,
527-
"evaluationPath": "/properties/bar/$ref",
528-
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar",
548+
"evaluationPath": "/properties/bar",
549+
"schemaLocation": "https://json-schema.org/schemas/example#/properties/bar",
529550
"instanceLocation": "/bar",
530-
"annotations": {
531-
"title": "bar-title",
532-
"properties": [
533-
"bar-prop"
534-
]
535-
},
536551
"details": [
537552
{
538553
"valid": true,
539-
"evaluationPath": "/properties/bar/$ref/properties/bar-prop",
540-
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar/properties/bar-prop",
541-
"instanceLocation": "/bar/bar-prop",
554+
"evaluationPath": "/properties/bar/$ref",
555+
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar",
556+
"instanceLocation": "/bar",
542557
"annotations": {
543-
"title": "bar-prop-title"
544-
}
558+
"title": "bar-title",
559+
"properties": [
560+
"bar-prop"
561+
]
562+
},
563+
"details": [
564+
{
565+
"valid": true,
566+
"evaluationPath": "/properties/bar/$ref/properties/bar-prop",
567+
"schemaLocation": "https://json-schema.org/schemas/example#/$defs/bar/properties/bar-prop",
568+
"instanceLocation": "/bar/bar-prop",
569+
"annotations": {
570+
"title": "bar-prop-title"
571+
}
572+
}
573+
]
545574
}
546575
]
547576
}
@@ -555,6 +584,7 @@ The location properties of the root output unit MAY be omitted.
555584

556585
For convenience, JSON Schema has been provided to validate output generated by
557586
implementations. Its IRI is: <https://json-schema.org/draft/next/output/schema>
587+
and can also be found at this address.
558588

559589
## Filtering
560590

‎output/schema.json

Lines changed: 20 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -3,12 +3,26 @@
33
"$id": "https://json-schema.org/draft/next/output/schema",
44
"description": "A schema that validates the minimum requirements for validation output",
55

6-
"anyOf": [
7-
{ "$ref": "#/$defs/flag" },
8-
{ "$ref": "#/$defs/list" },
9-
{ "$ref": "#/$defs/hierarchical" }
10-
],
6+
"type": "object",
7+
"properties": {
8+
"dialect": {
9+
"type": "string",
10+
"format": "iri"
11+
},
12+
"schema": {
13+
"type": "string",
14+
"format": "iri"
15+
},
16+
"valid": { "type": "boolean" },
17+
"details": { "$ref": "#/$defs/outputUnitArray" }
18+
},
19+
"required": ["dialect", "schema", "valid"],
20+
1121
"$defs": {
22+
"outputUnitArray": {
23+
"type": "array",
24+
"items": { "$ref": "#/$defs/outputUnit" }
25+
},
1226
"outputUnit":{
1327
"properties": {
1428
"valid": { "type": "boolean" },
@@ -70,26 +84,6 @@
7084
}
7185
}
7286
]
73-
},
74-
"outputUnitArray": {
75-
"type": "array",
76-
"items": { "$ref": "#/$defs/outputUnit" }
77-
},
78-
"flag": {
79-
"properties": {
80-
"valid": { "type": "boolean" }
81-
},
82-
"required": [ "valid" ]
83-
},
84-
"list": {
85-
"properties": {
86-
"valid": { "type": "boolean" },
87-
"details": {
88-
"$ref": "#/$defs/outputUnitArray"
89-
}
90-
},
91-
"required": [ "valid", "details" ]
92-
},
93-
"hierarchical": { "$ref": "#/$defs/outputUnit" }
87+
}
9488
}
9589
}

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