89 lines
2.9 KiB
Java
89 lines
2.9 KiB
Java
package de.bitsharesmunich.graphenej;
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import com.google.common.primitives.UnsignedLong;
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import com.google.gson.*;
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import de.bitsharesmunich.graphenej.interfaces.ByteSerializable;
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import de.bitsharesmunich.graphenej.interfaces.JsonSerializable;
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import java.lang.reflect.Type;
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/**
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* Created by nelson on 11/7/16.
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*/
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public class AssetAmount implements ByteSerializable, JsonSerializable {
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/**
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* Constants used in the JSON serialization procedure.
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*/
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public static final String KEY_AMOUNT = "amount";
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public static final String KEY_ASSET_ID = "asset_id";
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private UnsignedLong amount;
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private Asset asset;
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public AssetAmount(UnsignedLong amount, Asset asset){
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this.amount = amount;
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this.asset = asset;
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}
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public void setAmount(UnsignedLong amount){
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this.amount = amount;
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}
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public UnsignedLong getAmount(){
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return this.amount;
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}
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public Asset getAsset(){ return this.asset; }
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@Override
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public byte[] toBytes() {
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byte[] serialized = new byte[8 + 1];
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byte[] amountBytes = this.amount.bigIntegerValue().toByteArray();
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serialized[serialized.length - 1] = (byte) asset.instance;
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for(int i = 0; i < amountBytes.length; i++)
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serialized[i] = amountBytes[amountBytes.length - 1 - i];
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return serialized;
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}
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@Override
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public String toJsonString() {
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GsonBuilder gsonBuilder = new GsonBuilder();
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gsonBuilder.registerTypeAdapter(AssetAmount.class, new AssetSerializer());
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return gsonBuilder.create().toJson(this);
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}
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@Override
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public JsonObject toJsonObject() {
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JsonObject jsonAmount = new JsonObject();
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jsonAmount.addProperty(KEY_AMOUNT, amount);
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jsonAmount.addProperty(KEY_ASSET_ID, asset.getObjectId());
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return jsonAmount;
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}
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/**
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* Custom serializer used to translate this object into the JSON-formatted entry we need for a transaction.
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*/
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public static class AssetSerializer implements JsonSerializer<AssetAmount> {
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@Override
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public JsonElement serialize(AssetAmount assetAmount, Type type, JsonSerializationContext jsonSerializationContext) {
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JsonObject obj = new JsonObject();
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obj.addProperty(KEY_AMOUNT, assetAmount.amount);
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obj.addProperty(KEY_ASSET_ID, assetAmount.asset.getObjectId());
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return obj;
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}
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}
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public static class AssetDeserializer implements JsonDeserializer<AssetAmount> {
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@Override
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public AssetAmount deserialize(JsonElement json, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
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Long amount = json.getAsJsonObject().get(KEY_AMOUNT).getAsLong();
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String assetId = json.getAsJsonObject().get(KEY_ASSET_ID).getAsString();
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AssetAmount assetAmount = new AssetAmount(UnsignedLong.valueOf(amount), new Asset(assetId));
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return assetAmount;
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}
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}
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}
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