YoBitPairs.java

package org.knowm.xchange.yobit.dto.marketdata;

import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

import org.knowm.xchange.currency.CurrencyPair;
import org.knowm.xchange.yobit.YoBitAdapters;
import org.knowm.xchange.yobit.dto.marketdata.YoBitPair.YoBitPairDeserializer;
import org.knowm.xchange.yobit.dto.marketdata.YoBitPairs.YoBitPricesDeserializer;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.ObjectCodec;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;

@JsonDeserialize(using = YoBitPricesDeserializer.class)
public class YoBitPairs {
	private final Map<CurrencyPair, YoBitPair> pair;

	private YoBitPairs(Map<CurrencyPair, YoBitPair> pair) {
		this.pair = pair;
	}

	public Map<CurrencyPair, YoBitPair> getPrice() {
		return pair;
	}

	@Override
	public String toString() {
		return "YoBitPairs [pair=" + pair + "]";
	}

	static class YoBitPricesDeserializer extends JsonDeserializer<YoBitPairs> {

		@Override
		public YoBitPairs deserialize(JsonParser jp, DeserializationContext ctxt)
				throws IOException, JsonProcessingException {

			Map<CurrencyPair, YoBitPair> priceMap = new HashMap<CurrencyPair, YoBitPair>();
			ObjectCodec oc = jp.getCodec();
			JsonNode node = oc.readTree(jp);
			if (node.isObject()) {
				Iterator<Entry<String, JsonNode>> priceEntryIter = node.fields();
				while (priceEntryIter.hasNext()) {
					Entry<String, JsonNode> priceEntryNode = priceEntryIter.next();

					String pairString = priceEntryNode.getKey();
					CurrencyPair pair = YoBitAdapters.adaptCurrencyPair(pairString);

					JsonNode priceNode = priceEntryNode.getValue();
					YoBitPair price = YoBitPairDeserializer.deserializeFromNode(priceNode);

					priceMap.put(pair, price);
				}
			}

			return new YoBitPairs(priceMap);
		}
	}
}