JsonUtil

Value Members

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

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

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3. final def ##(): Int

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4. final def ==(arg0: AnyRef): Boolean

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

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6. final def asInstanceOf[T0]: T0

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7. def clone(): AnyRef

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   protected[java.lang]

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   @throws( ... )

8. def convertValue[T](obj: Any)(implicit arg0: Manifest[T]): Try[T]

   Convert an arbitrary JSON object to a T, where T is some context bound type.

   Convert an arbitrary JSON object to a T, where T is some context bound type. Useful for secondary JSON conversion, e.g. for polymorphic data members. A direct use-case is in JSON-Patch, where the expected value may be any of a raw value (String, Int, etc.), a full JSON object, or nothing.

   import com.paypal.cascade.json._
   case class JsonPatch(op: String, path: String, value: Option[Any])
   case class AnObject(...)
   val jsonStr = JsonUtil.toJson(JsonPatch("add", "/-", Some(AnObject(...)))).get
   val a = JsonUtil.fromJson[JsonPatch](jsonStr).get
   val inner = JsonUtil.convertValue[Option[AnObject]](a.value).get

   T

   a context bound type

   obj

   the object to convert

   returns

   a scala.util.Try that is either the object of type T, or a java.lang.IllegalArgumentException in the case of a cast to an incompatible type.

   Note

   Discovered via testing, this method does not play well with Optional data stored in Any fields. If you know that you need to serialize Optional values, please state them as Optional in their type declaration, e.g. in the example here with Foo and Bar. If a None is serialized in an object with an Any field, and you try to convert this as an Option, it will instead come out as a null value and you will have to post-process it as such. Instead, if the field is declared as a Option[Any] and a None is serialized, it will correctly be converted here as a None.

   ,

   This proxy method exists as an alternative to exposing the entire private mapper through a getInstance or copy method, so that the mapper remains a strict singleton and its configuration remains obscured. Otherwise, this is a direct proxy of the mapper.convertValue method from ScalaObjectMapper in Jackson, with added exception catching.

   ,

   In general, fromJson should be preferred for String-to-Object conversion. This method is intended for secondary conversion after fromJson has been applied.

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

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10. def equals(arg0: Any): Boolean

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11. def finalize(): Unit

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    protected[java.lang]

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    @throws( classOf[java.lang.Throwable] )

12. def fromJson[T](json: String)(implicit arg0: Manifest[T]): Try[T]

    Convert a JSON string to a T, where T is some context bound type.

    Convert a JSON string to a T, where T is some context bound type.

    T

    a context bound type

    json

    the JSON string

    returns

    a scala.util.Try that is either the object of type T, or one of java.io.IOException, com.fasterxml.jackson.core.JsonParseException, or com.fasterxml.jackson.databind.JsonMappingException

13. final def getClass(): Class[_]

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14. def hashCode(): Int

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15. final def isInstanceOf[T0]: Boolean

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

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17. final def notify(): Unit

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18. final def notifyAll(): Unit

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

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20. def toJson(value: Any): Try[String]

    Convert an object to a JSON string representation.

    Convert an object to a JSON string representation.

    value

    the object to convert

    returns

    a scala.util.Try that is either the JSON string representation, or a com.fasterxml.jackson.core.JsonProcessingException

21. def toString(): String

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22. final def wait(): Unit

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23. final def wait(arg0: Long, arg1: Int): Unit

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

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