List of usage examples for com.google.gson TypeAdapter write
public abstract void write(JsonWriter out, T value) throws IOException;
From source file:com.hkm.disqus.api.gson.ThreadTypeAdapterFactory.java
License:Apache License
@Override public <T> TypeAdapter<T> create(final Gson gson, TypeToken<T> type) { // Return null if not the thread type if (!type.getType().equals(Thread.class)) { return null; }//from ww w. ja va 2s. c o m // Get delegate final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); // Return adapter return new TypeAdapter<T>() { @Override public void write(JsonWriter out, T value) throws IOException { delegate.write(out, value); } @Override public T read(JsonReader in) throws IOException { JsonElement jsonTree = gson.fromJson(in, JsonElement.class); JsonElement forum = jsonTree.getAsJsonObject().get("forum"); JsonElement author = jsonTree.getAsJsonObject().get("author"); JsonElement category = jsonTree.getAsJsonObject().get("category"); // Process the thread with the delegate T thread = delegate.fromJsonTree(jsonTree); // Process forum and author if needed if (forum.isJsonObject()) { ((Thread) thread).forum = gson.fromJson(forum, Forum.class); } if (author.isJsonObject()) { ((Thread) thread).author = gson.fromJson(author, User.class); } if (category.isJsonObject()) { ((Thread) thread).category = gson.fromJson(category, Category.class); } // Return thread return thread; } }; }
From source file:com.ibm.og.json.type.ChoiceConfigTypeAdapterFactory.java
License:Open Source License
@Override @SuppressWarnings("unchecked") public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { final Class<T> rawType = (Class<T>) type.getRawType(); if (!ChoiceConfig.class.equals(rawType)) { return null; }//ww w. j a v a 2 s. c o m final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); return new TypeAdapter<T>() { @Override public void write(final JsonWriter out, final T value) throws IOException { delegate.write(out, value); } @Override @SuppressWarnings("rawtypes") public T read(final JsonReader in) throws IOException { final Class<?> genericType = (Class<?>) ((ParameterizedType) type.getType()) .getActualTypeArguments()[0]; final TypeAdapter<JsonElement> jsonElementAdapter = gson.getAdapter(JsonElement.class); // the tree api is used here rather than the stream api so that the full object can be // inspected and we can differentiate between a ChoiceConfig<T> object or the underlying T // object itself. With the stream api there would be no way to rewind the stream once this // determination is made // // this logic allows the user to configure a choice of T in both the standard form, or // compactly if the default choice weight is sufficient e.g. // // standard form // {"choice": {fields for T object}, "weight": 1.0} <- weight is optional here // // compact form where default weight is acceptable // {fields for T object} final JsonElement element = jsonElementAdapter.read(in); if (element.isJsonObject()) { final JsonObject object = element.getAsJsonObject(); if (object.entrySet().size() <= 2 && object.has("choice")) { return delegate.fromJsonTree(element); } } return (T) new ChoiceConfig(gson.getAdapter(TypeToken.get(genericType)).fromJsonTree(element)); } }.nullSafe(); }
From source file:com.ibm.og.json.type.ContainerConfigTypeAdapterFactory.java
License:Open Source License
@Override @SuppressWarnings("unchecked") public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { final Class<T> rawType = (Class<T>) type.getRawType(); if (!ContainerConfig.class.equals(rawType)) { return null; }/*ww w . j a v a2s . c om*/ final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); return new TypeAdapter<T>() { @Override public void write(final JsonWriter out, final T value) throws IOException { delegate.write(out, value); } @Override public T read(final JsonReader in) throws IOException { if (JsonToken.STRING == in.peek()) { return (T) new ContainerConfig(in.nextString()); } return delegate.read(in); } }.nullSafe(); }
From source file:com.ibm.og.json.type.FilesizeConfigTypeAdapterFactory.java
License:Open Source License
@Override @SuppressWarnings("unchecked") public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { final Class<T> rawType = (Class<T>) type.getRawType(); if (!FilesizeConfig.class.equals(rawType)) { return null; }// ww w .ja v a 2 s . com final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); return new TypeAdapter<T>() { @Override public void write(final JsonWriter out, final T value) throws IOException { delegate.write(out, value); } @Override public T read(final JsonReader in) throws IOException { if (JsonToken.NUMBER == in.peek()) { return (T) new FilesizeConfig(in.nextDouble()); } return delegate.read(in); } }.nullSafe(); }
From source file:com.ibm.og.json.type.OperationConfigTypeAdapterFactory.java
License:Open Source License
@Override @SuppressWarnings("unchecked") public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { final Class<T> rawType = (Class<T>) type.getRawType(); if (!OperationConfig.class.equals(rawType)) { return null; }//ww w.java 2s.co m final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); return new TypeAdapter<T>() { @Override public void write(final JsonWriter out, final T value) throws IOException { delegate.write(out, value); } @Override public T read(final JsonReader in) throws IOException { if (JsonToken.NUMBER == in.peek()) { return (T) new OperationConfig(in.nextDouble()); } return delegate.read(in); } }.nullSafe(); }
From source file:com.ibm.og.json.type.SelectionConfigTypeAdapterFactory.java
License:Open Source License
@Override @SuppressWarnings("unchecked") public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { final Class<T> rawType = (Class<T>) type.getRawType(); if (!SelectionConfig.class.equals(rawType)) { return null; }/*from w w w . j a va 2s . com*/ final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); return new TypeAdapter<T>() { @Override public void write(final JsonWriter out, final T value) throws IOException { delegate.write(out, value); } @Override public T read(final JsonReader in) throws IOException { final Class<?> genericType = (Class<?>) ((ParameterizedType) type.getType()) .getActualTypeArguments()[0]; final JsonElement element = gson.getAdapter(JsonElement.class).read(in); if (element.isJsonObject()) { final JsonObject object = element.getAsJsonObject(); if (object.entrySet().size() <= 2 && object.has("choices")) { return delegate.fromJsonTree(object); } else { return (T) choice(genericType, object); } } else if (element.isJsonArray()) { return (T) choiceList(genericType, element.getAsJsonArray()); } return (T) choice(genericType, element); } private <S> SelectionConfig<S> choice(final Class<S> clazz, final JsonElement element) throws IOException { final SelectionConfig<S> config = new SelectionConfig<S>(); config.choices.add(gson.getAdapter(choiceToken(clazz)).fromJsonTree(element)); return config; } private <S> SelectionConfig<S> choiceList(final Class<S> clazz, final JsonArray array) throws IOException { final SelectionConfig<S> config = new SelectionConfig<S>(); config.choices = gson.getAdapter(choiceListToken(clazz)).fromJsonTree(array); return config; } // must use guava's TypeToken implementation to create a TypeToken instance with a dynamic // type; then convert back to gson's TypeToken implementation for use in calling code. See: // https://groups.google.com/forum/#!topic/guava-discuss/HdBuiO44uaw private <S> TypeToken<ChoiceConfig<S>> choiceToken(final Class<S> clazz) { @SuppressWarnings("serial") final com.google.common.reflect.TypeToken<ChoiceConfig<S>> choiceToken = new com.google.common.reflect.TypeToken<ChoiceConfig<S>>() { }.where(new TypeParameter<S>() { }, com.google.common.reflect.TypeToken.of(clazz)); return (TypeToken<ChoiceConfig<S>>) TypeToken.get(choiceToken.getType()); } private <S> TypeToken<List<ChoiceConfig<S>>> choiceListToken(final Class<S> clazz) { @SuppressWarnings("serial") final com.google.common.reflect.TypeToken<List<ChoiceConfig<S>>> choiceToken = new com.google.common.reflect.TypeToken<List<ChoiceConfig<S>>>() { }.where(new TypeParameter<S>() { }, com.google.common.reflect.TypeToken.of(clazz)); return (TypeToken<List<ChoiceConfig<S>>>) TypeToken.get(choiceToken.getType()); } }.nullSafe(); }
From source file:com.javacreed.examples.gson.part2.AbstractTypeAdapter.java
License:Apache License
protected <E> void delegateWrite(final JsonWriter out, final E object, final Class<E> type) throws IOException { final TypeAdapter<E> typeAdapter = gson.getAdapter(type); typeAdapter.write(out, object); }
From source file:com.jd.survey.web.settings.NowwebmanagerController.java
License:Open Source License
@SuppressWarnings({ "rawtypes", "unchecked" }) @Override// w w w.j a v a 2 s.c o m public void write(JsonWriter out, HibernateProxy value) throws IOException { if (value == null) { out.nullValue(); return; } // Retrieve the original (not proxy) class Class<?> baseType = Hibernate.getClass(value); // Get the TypeAdapter of the original class, to delegate the serialization TypeAdapter delegate = context.getAdapter(TypeToken.get(baseType)); // Get a filled instance of the original class Object unproxiedValue = ((HibernateProxy) value).getHibernateLazyInitializer().getImplementation(); // Serialize the value delegate.write(out, unproxiedValue); }
From source file:com.pcloud.sdk.internal.networking.serialization.UnmodifiableListTypeFactory.java
License:Apache License
@Override public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> tokenType) { final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, tokenType); return new TypeAdapter<T>() { @Override// ww w . j a v a2 s . c om public void write(JsonWriter out, T value) throws IOException { delegate.write(out, value); } @SuppressWarnings("unchecked") @Override public T read(JsonReader arg0) throws IOException { T t = delegate.read(arg0); if (List.class.isAssignableFrom(tokenType.getRawType())) { List<?> list = (List<?>) t; return (T) Collections.unmodifiableList(list); } return t; } }; }
From source file:com.tinease.tools.json.TypeAdapterRuntimeTypeWrapper.java
License:Apache License
@SuppressWarnings({ "rawtypes", "unchecked" }) @Override// w w w .j a v a 2 s .c o m public void write(JsonWriter out, T value) throws IOException { // Order of preference for choosing type adapters // First preference: a type adapter registered for the runtime type // Second preference: a type adapter registered for the declared type // Third preference: reflective type adapter for the runtime type (if it is a sub class of the declared type) // Fourth preference: reflective type adapter for the declared type TypeAdapter chosen = delegate; Type runtimeType = getRuntimeTypeIfMoreSpecific(type, value); if (runtimeType != type) { TypeAdapter runtimeTypeAdapter = context.getAdapter(TypeToken.get(runtimeType)); if (!(runtimeTypeAdapter instanceof ReflectiveTypeAdapterFactory.Adapter)) { // The user registered a type adapter for the runtime type, so we will use that chosen = runtimeTypeAdapter; } else if (!(delegate instanceof ReflectiveTypeAdapterFactory.Adapter)) { // The user registered a type adapter for Base class, so we prefer it over the // reflective type adapter for the runtime type chosen = delegate; } else { // Use the type adapter for runtime type chosen = runtimeTypeAdapter; } } chosen.write(out, value); }