JsonSerializer

jsonserializer

import java.io.Writer;

import java.text.MessageFormat;

import java.util.List;

import java.util.ResourceBundle;

import com.thoughtworks.xstream.XStream;

import com.thoughtworks.xstream.io.HierarchicalStreamWriter;

import com.thoughtworks.xstream.io.json.JsonHierarchicalStreamDriver;

import com.thoughtworks.xstream.io.json.JsonWriter;


public class JsonSerializer {


        private static final String DEFAULT_NEW_LINE = "";

        private static final char[] DEFAULT_LINE_INDENTER = {};

        private static final String INDENTED_NEW_LINE = "\n";

        private static final char[] INDENTED_LINE_INDENTER = { ' ', ' ' };


        private ResourceBundle bundle;

        private XStream xstream;

        private boolean withoutRoot = false;

        private boolean indented = false;


        public JsonSerializer(ResourceBundle bundle){

                this.bundle = bundle;

                this.xstream = getXStreamJSON();

        }


        private XStream getXStreamJSON() {

                final String newLine = (indented ? INDENTED_NEW_LINE : DEFAULT_NEW_LINE);

                final char[] lineIndenter = (indented ? INDENTED_LINE_INDENTER : DEFAULT_LINE_INDENTER);


                XStream xstream = new XStream(new JsonHierarchicalStreamDriver(){

                        public HierarchicalStreamWriter createWriter(Writer writer) {

                                if (withoutRoot) {

                                        return new JsonWriter(writer, lineIndenter, newLine, JsonWriter.DROP_ROOT_MODE);

                                }

                                return new JsonWriter(writer, lineIndenter, newLine);

                        }

                });
                return xstream;

        }


        public JsonSerializer withoutRoot(){

          withoutRoot = true;

          xstream = getXStreamJSON();

          return this;

        }


        public String serialize(String alias, List<?> lista){

                xstream.alias(alias, List.class);

                return xstream.toXML(lista);

        }


        public String serialize(String alias, Object object){

          xstream.alias(alias, object.getClass());

          return xstream.toXML(object);

        }


        public String serialize(Object object){

          return xstream.toXML(object);

        }


        public String serializeMessage(String key){

                xstream.alias(MessageKeys.MESSAGE , String.class);

                String message = MessageFormat.format(bundle.getString(key),new Object[]{});

                return xstream.toXML(message);

        }


}