patternProperties within complex schema structure #622
Description
I am using a schema which is structured into several sub-schema files.
It is working with v0.178.0 but it is based on relative paths within $ref.
As already explained here there is no support of "relative URIs" within $ref anymore.
Therefore I changed the the schema files accordingly to used proper paths within $ref properties.
That is working in principle with most of the JSON-Schema keywords, except with patternProperties in sub-schema files.
Following example shall demonstrate this issue:
namespace {
auto main_schema = jsoncons::ojson::parse(R"({
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "/schema.json",
"type": "object",
"properties": {
"$schema": {
"type": "string"
},
"version": {
"description": "Version number of JSON content",
"type": "string"
},
"features": {
"description": "List of features supported by the device",
"type": "object",
"patternProperties": {
"Firmware Update": {
"$ref": "/firmware_update.json#/$defs/firmware_update"
}
},
"required": [
"Firmware Update"
]
}
},
"required": [
"$schema",
"version",
"features"
],
"additionalProperties": false
})");
auto firmware_update_schema = jsoncons::ojson::parse(R"({
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "/firmware_update.json",
"type": "object",
"$defs": {
"firmware_update": {
"allOf": [
{
"description": "Firmware Update Feature description",
"properties": {
"feature_type": {
"const": "update"
},
"version": {
"enum": [
"V1",
"V2"
]
}
}
},
{
"$ref": "/basic_types.json#/$defs/feature"
}
]
}
}
})");
auto basic_types_schema = jsoncons::ojson::parse(R"({
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "/basic_types.json",
"type": "object",
"$defs": {
"parameter": {
"type": "object",
"description": "A configuration parameter",
"properties": {
"description": {
"type": "string"
}
"name": {
"description": "The name of the parameter in the config provider",
"type": "string"
}
},
"required": [
"name"
],
"additionalProperties": false
},
"const_parameter": {
"type": "object",
"description": "A configuration parameter with a constant value",
"properties": {
"description": {
"type": "string"
},
"from": {
"const": "const"
},
"value": {
"description": "The constant value of the parameter",
"type": [
"string",
"number",
"boolean",
"array"
]
}
},
"required": [
"from",
"value"
]
},
"parameter_list": {
"patternProperties": {
"[a-zA-Z_]{1,}": {
"oneOf": [
{
"$ref": "#/$defs/parameter"
},
{
"$ref": "#/$defs/const_parameter"
}
]
}
}
},
"feature": {
"description": "A generic feature description",
"properties": {
"feature_type": {
"type": "string"
},
"version": {
"type": "string"
},
"description": {
"type": "string"
},
"config": {
"$ref": "#/$defs/parameter_list"
}
},
"required": [
"feature_type",
"version"
]
}
}
})");
std::string json_str = R"({
"$schema": "/schema.json",
"version": "v0.1",
"features": {
"Firmware Update": {
"feature_type": "update",
"version": "V2",
"config": {
"firmware_update": {
"from": "const",
"value": "xyz"
}
}
}
}
})";
}
int main() {
auto resolver = [](const jsoncons::uri& p_uri)
{
std::cout << "p_uri.path : " << p_uri.path() << std::endl;
if (my_file_path == "/basic_types.json")
{
return ::basic_types_schema;
}
if (my_file_path == "/firmware_update.json")
{
return ::firmware_update_schema;
}
std::cout << "Resolver cannot parse " << my_file_path << std::endl;
return jsoncons::ojson::null();
};
auto validator = jsoncons::jsonschema::make_json_schema(::main_schema, resolver);
jsoncons::json_decoder<jsoncons::ojson> decoder;
validator.validate(jsoncons::ojson::parse(::json_str), decoder);
const auto result = _decoder.get_result();
std::cout << jsoncons::pretty_print(result);
return 0;
}The problem is caused by the patternProperties keyword within the parameter_list definition.
If I am exchange the parameter_list definition with
"parameter_list":
{
"properties": {
"firmware_update": {
"oneOf": [
{
"$ref": "#/$defs/parameter"
},
{
"$ref": "#/$defs/const_parameter"
}
]
}
}
}
then it works.
It is tested with - [x] Latest release 1.3.2