1 /* 2 * Copyright (C) 2008 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.gson; 18 19 import java.lang.reflect.Type; 20 21 /** 22 * Context for deserialization that is passed to a custom deserializer during invocation of its 23 * {@link JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext)} 24 * method. 25 * 26 * @author Inderjeet Singh 27 * @author Joel Leitch 28 */ 29 public interface JsonDeserializationContext { 30 31 /** 32 * Invokes default deserialization on the specified object. It should never be invoked on 33 * the element received as a parameter of the 34 * {@link JsonDeserializer#deserialize(JsonElement, Type, JsonDeserializationContext)} method. Doing 35 * so will result in an infinite loop since Gson will in-turn call the custom deserializer again. 36 * 37 * @param json the parse tree. 38 * @param typeOfT type of the expected return value. 39 * @param <T> The type of the deserialized object. 40 * @return An object of type typeOfT. 41 * @throws JsonParseException if the parse tree does not contain expected data. 42 */ deserialize(JsonElement json, Type typeOfT)43 public <T> T deserialize(JsonElement json, Type typeOfT) throws JsonParseException; 44 }