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36 package gr.grnet.aquarium.util.xstream
38 import com.thoughtworks.xstream.XStream
39 import com.thoughtworks.xstream.converters.{MarshallingContext, UnmarshallingContext}
40 import com.thoughtworks.xstream.io.{HierarchicalStreamWriter, HierarchicalStreamReader}
41 import com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter
42 import com.thoughtworks.xstream.mapper.Mapper
45 * Provides a human-friendlier xstream behavior for Scala lists.
47 * Taken from `http://stackoverflow.com/questions/1753511/how-can-i-get-xstream-to-output-scala-lists-nicely-can-i-write-a-custom-convert`
49 class ListConverter(mapper: Mapper) extends AbstractCollectionConverter(mapper) {
50 def canConvert(clazz: Class[_]) = {
51 classOf[::[_]] == clazz
54 def marshal(value: AnyRef, writer: HierarchicalStreamWriter, context: MarshallingContext) = {
55 val list = value.asInstanceOf[List[_]]
57 writeItem(item, context, writer)
61 def unmarshal(reader: HierarchicalStreamReader, context: UnmarshallingContext) = {
62 var list : List[_] = Nil
63 while(reader.hasMoreChildren()) {
65 val item = readItem(reader, context, list);
66 list = list ::: List(item)