tech.mlsql.common.JsonUtils.scala Maven / Gradle / Ivy

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package tech.mlsql.common

import com.fasterxml.jackson.annotation.JsonInclude.Include
import com.fasterxml.jackson.databind.{DeserializationFeature, ObjectMapper}
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper

/**
  * 2019-06-20 WilliamZhu([email protected])
  */
object JsonUtils {
  /** Used to convert between classes and JSON. */
  val mapper = new ObjectMapper with ScalaObjectMapper
  mapper.setSerializationInclusion(Include.NON_NULL)
  mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
  mapper.registerModule(DefaultScalaModule)

  def toJson[T: Manifest](obj: T): String = {
    mapper.writeValueAsString(obj)
  }

  def toPrettyJson[T: Manifest](obj: T): String = {
    mapper.writerWithDefaultPrettyPrinter().writeValueAsString(obj)
  }

  def fromJson[T: Manifest](json: String): T = {
    mapper.readValue[T](json)
  }
}