Java tutorial
/* * Copyright 2016 Tinkoff Bank * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package ru.tinkoff.acquiring.sdk; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonParseException; import com.google.gson.JsonPrimitive; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import java.lang.reflect.Type; /** * @author Mikhail Artemyev */ public class CardStatusSerializer implements JsonSerializer<CardStatus>, JsonDeserializer<CardStatus> { @Override public CardStatus deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException { if (json != null) { final String stringRepresentation = json.getAsString(); if (stringRepresentation.length() != 1) { throw new JsonParseException("Card Status has wrong format: " + stringRepresentation); } return CardStatus.fromChar(stringRepresentation.charAt(0)); } return null; } @Override public JsonElement serialize(CardStatus src, Type typeOfSrc, JsonSerializationContext context) { if (src != null) { return new JsonPrimitive(src.toString()); } return null; } }