Class

org.json4s

ExtractableJsonAstNode

Related Doc: package json4s

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class ExtractableJsonAstNode extends AnyRef

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Instance Constructors

  1. new ExtractableJsonAstNode(jv: JValue)

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Value Members

  1. final def !=(arg0: Any): Boolean

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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. def as[A](implicit reader: Reader[A], mf: Manifest[A]): A

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    Given that an implicit reader of type A is in scope It will deserialize the org.json4s.JsonAST.JValue to an object of type A

    Given that an implicit reader of type A is in scope It will deserialize the org.json4s.JsonAST.JValue to an object of type A

    Example:

    case class Person(name: String)
    implicit object PersonReader extends Reader[Person] {
      def read(json: JValue): Person = Person((json \ "name").extract[String])
    }
    JObject(JField("name", JString("Joe")) :: Nil).as[Person]
  5. final def asInstanceOf[T0]: T0

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  6. def clone(): AnyRef

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  7. final def eq(arg0: AnyRef): Boolean

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  8. def equals(arg0: Any): Boolean

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  9. def extract[A](implicit formats: Formats, mf: Manifest[A]): A

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    Extract a value from a JSON.

    Extract a value from a JSON.

    Value can be:

    • case class
    • primitive (String, Boolean, Date, etc.)
    • supported collection type (List, Seq, Map[String, _], Set)
    • any type which has a configured custom deserializer

    Example:

    case class Person(name: String)
    JObject(JField("name", JString("joe")) :: Nil).extract[Person] == Person("joe")
    

  10. def extractOpt[A](implicit formats: Formats, mf: Manifest[A]): Option[A]

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    Extract a value from a JSON.

    Extract a value from a JSON.

    Value can be:

    • case class
    • primitive (String, Boolean, Date, etc.)
    • supported collection type (List, Seq, Map[String, _], Set)
    • any type which has a configured custom deserializer

    Example:

    case class Person(name: String)
    JObject(JField("name", JString("joe")) :: Nil).extractOpt[Person] == Some(Person("joe"))
    

  11. def extractOrElse[A](default: ⇒ A)(implicit formats: Formats, mf: Manifest[A]): A

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    Extract a value from a JSON using a default value.

    Extract a value from a JSON using a default value.

    Value can be:

    • case class
    • primitive (String, Boolean, Date, etc.)
    • supported collection type (List, Seq, Map[String, _], Set)
    • any type which has a configured custom deserializer

    Example:

    case class Person(name: String)
    JNothing.extractOrElse(Person("joe")) == Person("joe")
    

  12. def finalize(): Unit

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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  13. def getAs[A](implicit reader: Reader[A], mf: Manifest[A]): Option[A]

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    Given that an implicit reader of type A is in scope It will deserialize the org.json4s.JsonAST.JValue to an object of type Option[A]

    Given that an implicit reader of type A is in scope It will deserialize the org.json4s.JsonAST.JValue to an object of type Option[A]

    Example:

    case class Person(name: String)
    implicit object PersonReader extends Reader[Person] {
      def read(json: JValue): Person = Person((json \ "name").extract[String])
    }
    JObject(JField("name", JString("Joe")) :: Nil).getAs[Person]
  14. def getAsOrElse[A](default: ⇒ A)(implicit reader: Reader[A], mf: Manifest[A]): A

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    Given that an implicit reader of type A is in scope It will deserialize the org.json4s.JsonAST.JValue to an object of type A if an error occurs it will return the default value.

    Given that an implicit reader of type A is in scope It will deserialize the org.json4s.JsonAST.JValue to an object of type A if an error occurs it will return the default value.

    Example:

    case class Person(name: String)
    implicit object PersonReader extends Reader[Person] {
      def read(json: JValue): Person = Person((json \ "name").extract[String])
    }
    JObject(JField("name", JString("Joe")) :: Nil).getAsOrElse(Person("Tom"))
  15. final def getClass(): Class[_]

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  16. def hashCode(): Int

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  17. final def isInstanceOf[T0]: Boolean

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  18. final def ne(arg0: AnyRef): Boolean

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  19. final def notify(): Unit

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  20. final def notifyAll(): Unit

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  21. final def synchronized[T0](arg0: ⇒ T0): T0

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  22. def toString(): String

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  23. final def wait(): Unit

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    @throws( ... )
  24. final def wait(arg0: Long, arg1: Int): Unit

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  25. final def wait(arg0: Long): Unit

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