/
ListWriter.scala
42 lines (36 loc) · 1.37 KB
/
ListWriter.scala
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/**
* Copyright (C) 2009-2011 Scalable Solutions AB <http://scalablesolutions.se>
*/
package akka.http
import akka.serialization.Serializer
import java.io.OutputStream
import javax.ws.rs.core.{MultivaluedMap, MediaType}
import javax.ws.rs.ext.{MessageBodyWriter, Provider}
import javax.ws.rs.Produces
/**
* Writes Lists of JSON serializable objects.
*/
@Provider
@Produces(Array("application/json"))
class ListWriter extends MessageBodyWriter[List[_]] {
def isWriteable(aClass: Class[_],
aType: java.lang.reflect.Type,
annotations: Array[java.lang.annotation.Annotation],
mediaType: MediaType) =
classOf[List[_]].isAssignableFrom(aClass) || aClass == ::.getClass
def getSize(list: List[_],
aClass: Class[_],
aType: java.lang.reflect.Type,
annotations: Array[java.lang.annotation.Annotation],
mediaType: MediaType) =
-1L
def writeTo(list: List[_],
aClass: Class[_],
aType: java.lang.reflect.Type,
annotations: Array[java.lang.annotation.Annotation],
mediaType: MediaType,
stringObjectMultivaluedMap: MultivaluedMap[String, Object],
outputStream: OutputStream): Unit =
if (list.isEmpty) outputStream.write(" ".getBytes)
else outputStream.write(Serializer.ScalaJSON.toBinary(list))
}