JSON Schema Validation

<dependency>
    <groupId>com.networknt</groupId>
    <artifactId>json-schema-validator</artifactId>
    <version>1.0.42</version>
</dependency>

private static InputStream inputStreamFromClasspath(String path) {
    return Thread.currentThread().getContextClassLoader().getResourceAsStream(path);
}
 
public static void main(String[] args) throws Exception {
    ObjectMapper objectMapper = new ObjectMapper();
    JsonSchemaFactory schemaFactory = JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V201909);
 
    try (
            InputStream jsonStream = inputStreamFromClasspath("example.json");
            InputStream schemaStream = inputStreamFromClasspath("example-schema.json")
    ) {
        JsonNode json = objectMapper.readTree(jsonStream);
        JsonSchema schema = schemaFactory.getSchema(schemaStream);
        Set<ValidationMessage> validationResult = schema.validate(json);
 
        // print validation errors
        if (validationResult.isEmpty()) {
            System.out.println("no validation errors :-)");
        } else {
            validationResult.forEach(vm -> System.out.println(vm.getMessage()));
        }
    }
}

Schema Naming

Age:           Age.schema.json
Address:   Address.schema.json
Account:   Account.schema.json
Quantity: Quantity.schema.json

Knowledge

https://cdnjs.com/libraries/ajv https://cdnjs.com/libraries/moment.js https://cdnjs.com/libraries/mustache.js https://cdnjs.com/libraries/handlebars.js		closure-compiler\ --js ./handlebars.js\ --js_output_file ./handlebars.min.js\ --language_out ECMASCRIPT_2015
closure-compiler\ --js ./mustache.js\ --js_output_file ./mustache.min.js\ --language_out ECMASCRIPT_2015	closure-compiler\ --js ./moment.js\ --js_output_file ./moment.min.js\ --language_out ECMASCRIPT_2015	closure-compiler\ --js ./ajv7.js\ --js_output_file ./ajv7.min.js\ --language_out ECMASCRIPT_2015
TypeReference<SomeStype> ref = new TypeReference<SomeType>(){};

Feasibility

Java
https://github.com/eclipse-vertx/vertx-json-schema

JavaScript
https://ajv.js.org/

References

Jackson Serialize/Deserialize for Java 8 java.time NetworkNT JSON Schema With Unknown keywords NetworkNT fastest Java JSON Schema Validator Introduction to JSON Schema in Java Ajv: Another JSON schema validator JSON Schema validation in Java JSON Schema Implementations Structuring a Complex Schema EverIt JSON Schema Validator Ajv JSON schema validator	Rhino » Modify a Property of a Sealed Object Opis JSON Schema Documentation Understanding JSON Schema JSON Schema file extension jackson-modules-java8 JSON Schema for Patient Google Closure Compiler FHIR Documentation FHIR Specification J2V8	Serialize/deserialize java.time.DayOfWeek Register modules in ObjecMapper globally Three Ways to Validate JSON in Java Vertx » A JSON schema validator Vertx » JSON validator GraphQL Rhino Yarn NPM