Comparison of two factories using minimal example

sample_usage.kt

package com.amartus.playground.jackson

import com.networknt.schema.InputFormat
import com.networknt.schema.JsonSchemaFactory
import com.networknt.schema.SchemaValidatorsConfig
import com.networknt.schema.SpecVersion
import com.networknt.schema.ValidationMessage
import com.networknt.schema.walk.JsonSchemaWalkListener
import com.networknt.schema.walk.WalkEvent
import com.networknt.schema.walk.WalkFlow

fun walk(factory : JsonSchemaFactory, cfg: SchemaValidatorsConfig) {
    println("Walking with factory: ${factory}")
    val schema = """
        {
          "type": "object",
          "properties": {
            "name": {
              "type": "string"
            },
            "children": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "name": {
                    "type": "string"
                  }
                }
              }
            }
          }
        }
    """.trimIndent()

    val data = """{"name": "John", "children": [{"name": "Alice"}]}"""

    println("-- with data --")
    factory.getSchema(schema, cfg)
        .walk(data, InputFormat.JSON, false)
    println("-- with no data --")
    factory.getSchema(schema, cfg)
        .walk(null, false)
}

fun main() {
    val listener = object: JsonSchemaWalkListener {
        override fun onWalkStart(walkEvent: WalkEvent?) = WalkFlow.CONTINUE
        override fun onWalkEnd(walkEvent: WalkEvent?, validationMessages: MutableSet<ValidationMessage>?) {
            println(walkEvent?.instanceLocation)
        }
    }
    val cfg = SchemaValidatorsConfig().apply {
        addItemWalkListener(listener)
        addPropertyWalkListener(listener)
    }

    walk(JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V201909), cfg)
    walk(JsonSchemaFactory.getInstance(SpecVersion.VersionFlag.V202012), cfg)

}