Android Open Source - reflect-app Json Serializer






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License

The source code is released under:

Apache License

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Java Source Code

/*
 * Copyright (C) 2008 Google Inc.//from   w ww.  java2s  .co m
 *
 * 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 com.google.gson;

import java.lang.reflect.Type;

/**
 * Interface representing a custom serializer for Json. You should write a custom serializer, if
 * you are not happy with the default serialization done by Gson. You will also need to register
 * this serializer through {@link com.google.gson.GsonBuilder#registerTypeAdapter(Type, Object)}.
 *
 * <p>Let us look at example where defining a serializer will be useful. The {@code Id} class
 * defined below has two fields: {@code clazz} and {@code value}.</p>
 *
 * <p><pre>
 * public class Id&lt;T&gt; {
 *   private final Class&lt;T&gt; clazz;
 *   private final long value;
 *
 *   public Id(Class&lt;T&gt; clazz, long value) {
 *     this.clazz = clazz;
 *     this.value = value;
 *   }
 *
 *   public long getValue() {
 *     return value;
 *   }
 * }
 * </pre></p>
 *
 * <p>The default serialization of {@code Id(com.foo.MyObject.class, 20L)} will be
 * <code>{"clazz":com.foo.MyObject,"value":20}</code>. Suppose, you just want the output to be
 * the value instead, which is {@code 20} in this case. You can achieve that by writing a custom
 * serializer:</p>
 *
 * <p><pre>
 * class IdSerializer implements JsonSerializer&lt;Id&gt;() {
 *   public JsonElement serialize(Id id, Type typeOfId, JsonSerializationContext context) {
 *     return new JsonPrimitive(id.getValue());
 *   }
 * }
 * </pre></p>
 *
 * <p>You will also need to register {@code IdSerializer} with Gson as follows:</p>
 * <pre>
 * Gson gson = new GsonBuilder().registerTypeAdapter(Id.class, new IdSerializer()).create();
 * </pre>
 *
 * <p>New applications should prefer {@link TypeAdapter}, whose streaming API
 * is more efficient than this interface's tree API.
 *
 * @author Inderjeet Singh
 * @author Joel Leitch
 *
 * @param <T> type for which the serializer is being registered. It is possible that a serializer
 *        may be asked to serialize a specific generic type of the T.
 */
public interface JsonSerializer<T> {

  /**
   * Gson invokes this call-back method during serialization when it encounters a field of the
   * specified type.
   *
   * <p>In the implementation of this call-back method, you should consider invoking
   * {@link JsonSerializationContext#serialize(Object, Type)} method to create JsonElements for any
   * non-trivial field of the {@code src} object. However, you should never invoke it on the
   * {@code src} object itself since that will cause an infinite loop (Gson will call your
   * call-back method again).</p>
   *
   * @param src the object that needs to be converted to Json.
   * @param typeOfSrc the actual type (fully genericized version) of the source object.
   * @return a JsonElement corresponding to the specified object.
   */
  public JsonElement serialize(T src, Type typeOfSrc, JsonSerializationContext context);
}




Java Source Code List

com.google.gson.DefaultDateTypeAdapter.java
com.google.gson.ExclusionStrategy.java
com.google.gson.FieldAttributes.java
com.google.gson.FieldNamingPolicy.java
com.google.gson.FieldNamingStrategy.java
com.google.gson.GsonBuilder.java
com.google.gson.Gson.java
com.google.gson.InstanceCreator.java
com.google.gson.JsonArray.java
com.google.gson.JsonDeserializationContext.java
com.google.gson.JsonDeserializer.java
com.google.gson.JsonElement.java
com.google.gson.JsonIOException.java
com.google.gson.JsonNull.java
com.google.gson.JsonObject.java
com.google.gson.JsonParseException.java
com.google.gson.JsonParser.java
com.google.gson.JsonPrimitive.java
com.google.gson.JsonSerializationContext.java
com.google.gson.JsonSerializer.java
com.google.gson.JsonStreamParser.java
com.google.gson.JsonSyntaxException.java
com.google.gson.LongSerializationPolicy.java
com.google.gson.TreeTypeAdapter.java
com.google.gson.TypeAdapterFactory.java
com.google.gson.TypeAdapter.java
com.google.gson.annotations.Expose.java
com.google.gson.annotations.SerializedName.java
com.google.gson.annotations.Since.java
com.google.gson.annotations.Until.java
com.google.gson.annotations.package-info.java
com.google.gson.internal.ConstructorConstructor.java
com.google.gson.internal.Excluder.java
com.google.gson.internal.JsonReaderInternalAccess.java
com.google.gson.internal.LazilyParsedNumber.java
com.google.gson.internal.LinkedHashTreeMap.java
com.google.gson.internal.ObjectConstructor.java
com.google.gson.internal.Primitives.java
com.google.gson.internal.Streams.java
com.google.gson.internal.UnsafeAllocator.java
com.google.gson.internal.$Gson$Preconditions.java
com.google.gson.internal.$Gson$Types.java
com.google.gson.internal.bind.ArrayTypeAdapter.java
com.google.gson.internal.bind.CollectionTypeAdapterFactory.java
com.google.gson.internal.bind.DateTypeAdapter.java
com.google.gson.internal.bind.JsonTreeReader.java
com.google.gson.internal.bind.JsonTreeWriter.java
com.google.gson.internal.bind.MapTypeAdapterFactory.java
com.google.gson.internal.bind.ObjectTypeAdapter.java
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.java
com.google.gson.internal.bind.SqlDateTypeAdapter.java
com.google.gson.internal.bind.TimeTypeAdapter.java
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.java
com.google.gson.internal.bind.TypeAdapters.java
com.google.gson.internal.package-info.java
com.google.gson.reflect.TypeToken.java
com.google.gson.reflect.package-info.java
com.google.gson.stream.JsonReader.java
com.google.gson.stream.JsonScope.java
com.google.gson.stream.JsonToken.java
com.google.gson.stream.JsonWriter.java
com.google.gson.stream.MalformedJsonException.java
com.google.gson.package-info.java
com.pontydysgu.data.Answer.java
com.pontydysgu.data.LoginData.java
com.pontydysgu.data.QuestionStack.java
com.pontydysgu.data.Question.java
com.pontydysgu.data.StackArray.java
com.pontydysgu.gui.StackArrayAdapter.java
com.pontydysgu.pontylearningapp.DataService.java
com.pontydysgu.pontylearningapp.Login.java
com.pontydysgu.pontylearningapp.QuestionCycle.java
com.pontydysgu.pontylearningapp.Stackoverview.java
com.pontydysgu.webio.GetWebRequest.java
com.pontydysgu.webio.LoginService.java
com.pontydysgu.webio.PontyService.java
com.pontydysgu.webio.RetrieveStacksCallback.java
com.pontydysgu.webio.RetrieveStacksTask.java
com.pontydysgu.webio.SubmitAnswerCallback.java
com.pontydysgu.webio.SubmitAnswerTask.java