JsonSerialization.java

package com.cardshifter.server.clients;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import com.cardshifter.api.CardshifterSerializationException;
import com.cardshifter.api.messages.Message;
import com.cardshifter.api.serial.CommunicationTransformer;
import com.cardshifter.api.serial.MessageHandler;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.MappingIterator;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonSerialization implements CommunicationTransformer {

	private final ObjectMapper mapper;

	public JsonSerialization(ObjectMapper mapper) {
		this.mapper = mapper;
	}
	
	@Override
	public void send(Message message, OutputStream out) throws CardshifterSerializationException {
        try {
            mapper.writeValue(out, message);
        } catch (IOException e) {
            throw new CardshifterSerializationException(e);
        }
    }

	@Override
	public void read(InputStream in, MessageHandler onReceived) throws CardshifterSerializationException {
        try {
            MappingIterator<Message> values;
            values = mapper.readValues(new JsonFactory().createParser(in), Message.class);
            while (values.hasNextValue()) {
                Message message = values.next();
                if (!onReceived.messageReceived(message)) {
                    return;
                }
            }
        } catch (IOException ex) {
            throw new CardshifterSerializationException(ex);
        }
	}

}