com.fasterxml.jackson.module.scala.deser.ScalaEnumerationDeserializer.scala Maven / Gradle / Ivy

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Add-on module for Jackson (http://jackson.codehaus.org) to support Scala (http://www.scala-lang.org/) data types.

There is a newer version: 1.9.3

package com.fasterxml.jackson.module.scala.deser

import org.codehaus.jackson.map._
import org.codehaus.jackson.{JsonToken,JsonParser}
import org.codehaus.jackson.`type`.JavaType

class ScalaEnumerationDeserializer(`type`:JavaType) extends JsonDeserializer[Object] {
	override def deserialize(jp:JsonParser, ctxt:DeserializationContext) = {
		if (jp.getCurrentToken != JsonToken.START_OBJECT) 
			throw ctxt.mappingException(`type`.getRawClass)
		val (eclass,eclassName) = parsePair(jp)
		if (eclass != "enumClass") 
			throw ctxt.mappingException(`type`.getRawClass)
		val (value, valueValue) = parsePair(jp)
		if (value != "value") 
			throw ctxt.mappingException(`type`.getRawClass)
		jp.nextToken()
		Class.forName(eclassName).getMethod("withName",classOf[String]).invoke(null,valueValue)
	}
	
	private def parsePair( jp:JsonParser ) = ({jp.nextToken; jp.getText}, {jp.nextToken; jp.getText})
}