List of usage examples for com.google.gson.reflect TypeToken getRawType
public final Class<? super T> getRawType()
From source file:org.wso2.msf4j.internal.router.ParamConvertUtils.java
License:Open Source License
/** * Creates a converter function that converts value into a {@link List}, {@link Set} or {@link SortedSet}. * * @param resultType Result type//ww w . ja v a 2s . c o m * @return A converter function or {@code null} if the given type is not a {@link ParameterizedType} with raw type * as {@link List}, {@link Set} or {@link SortedSet}. Also, for {@link SortedSet} type, if the element type * doesn't implements {@link Comparable}, {@code null} is returned. */ @SuppressWarnings("unchecked") private static Function<List<String>, Object> createCollectionConverter(TypeToken<?> resultType) { final Class<?> rawType = resultType.getRawType(); // Collection. It must be List or Set if (rawType != List.class && rawType != Set.class && rawType != SortedSet.class) { return null; } // Must be ParameterizedType if (!(resultType.getType() instanceof ParameterizedType)) { return null; } // Must have 1 type parameter ParameterizedType type = (ParameterizedType) resultType.getType(); if (type.getActualTypeArguments().length != 1) { return null; } // For SortedSet, the entry type must be Comparable. Type elementType = type.getActualTypeArguments()[0]; if (rawType == SortedSet.class && !Comparable.class.isAssignableFrom(TypeToken.get(elementType).getRawType())) { return null; } //We only support List type for java.io.File if (elementType == File.class && rawType != List.class) { throw new IllegalArgumentException("File doesn't support " + rawType); } // Get the converter for the collection element. final Function<List<String>, Object> elementConverter = createQueryParamConverter(elementType); return new Function<List<String>, Object>() { @Override public Object apply(List<String> values) { Collection<? extends Comparable> collection; if (rawType == List.class) { collection = new ArrayList<>(); } else if (rawType == Set.class) { collection = new HashSet<>(); } else { collection = new TreeSet<>(); } if (values != null) { for (String value : values) { add(collection, elementConverter.apply(Collections.singletonList(value))); } } return collection; } @SuppressWarnings("unchecked") private <T> void add(Collection<T> collection, Object element) { collection.add((T) element); } }; }
From source file:ro.cosu.vampires.server.util.gson.AutoValueAdapterFactory.java
License:Open Source License
@SuppressWarnings("unchecked") @Override/*from ww w. j av a 2s.com*/ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) { Class<? super T> rawType = type.getRawType(); if (!rawType.isAnnotationPresent(AutoGson.class)) { return null; } String packageName = rawType.getPackage().getName(); String className = rawType.getName().substring(packageName.length() + 1).replace('$', '_'); String autoValueName = packageName + ".AutoValue_" + className; try { Class<?> autoValueType = Class.forName(autoValueName); return (TypeAdapter<T>) gson.getAdapter(autoValueType); } catch (ClassNotFoundException e) { throw new RuntimeException("Could not load AutoValue providerType " + autoValueName, e); } }
From source file:ro.cosu.vampires.server.util.gson.LowercaseEnumTypeAdapterFactory.java
License:Open Source License
@SuppressWarnings("unchecked") public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) { Class<T> rawType = (Class<T>) type.getRawType(); if (!rawType.isEnum()) { return null; }//from ww w . ja va 2 s . c om final Map<String, T> lowercaseToConstant = new HashMap<String, T>(); for (T constant : rawType.getEnumConstants()) { lowercaseToConstant.put(toLowercase(constant), constant); } return new TypeAdapter<T>() { public void write(JsonWriter out, T value) throws IOException { if (value == null) { out.nullValue(); } else { out.value(toLowercase(value)); } } public T read(JsonReader reader) throws IOException { if (reader.peek() == JsonToken.NULL) { reader.nextNull(); return null; } else { return lowercaseToConstant.get(reader.nextString()); } } }; }
From source file:ru.teamrocket.csrsysteamdesktop.Service.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (null == type || !baseType.isAssignableFrom(type.getRawType())) { return null; }/*from ww w .ja v a2 s. c o m*/ final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<String, TypeAdapter<?>>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<Class<?>, TypeAdapter<?>>(); for (Map.Entry<String, Class<?>> entry : labelToSubtype.entrySet()) { TypeAdapter<?> delegate = gson.getDelegateAdapter(this, TypeToken.get(entry.getValue())); labelToDelegate.put(entry.getKey(), delegate); subtypeToDelegate.put(entry.getValue(), delegate); } return new TypeAdapter<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement labelJsonElement = jsonElement.getAsJsonObject().get(typeFieldName); if (labelJsonElement == null) { throw new JsonParseException("cannot deserialize " + baseType + " because it does not define a field named " + typeFieldName); } String label = labelJsonElement.getAsString(); @SuppressWarnings("unchecked") // registration requires that subtype extends T TypeAdapter<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); } return delegate.fromJsonTree(jsonElement); } @Override public void write(JsonWriter out, R value) throws IOException { Class<?> srcType = value.getClass(); String label = subtypeToLabel.get(srcType); @SuppressWarnings("unchecked") // registration requires that subtype extends T TypeAdapter<R> delegate = (TypeAdapter<R>) subtypeToDelegate.get(srcType); if (delegate == null) { throw new JsonParseException( "cannot serialize " + srcType.getName() + "; did you forget to register a subtype?"); } JsonObject jsonObject = delegate.toJsonTree(value).getAsJsonObject(); if (jsonObject.has(typeFieldName)) { //throw new JsonParseException("cannot serialize " + srcType.getName() // + " because it already defines a field named " + typeFieldName); } JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } }.nullSafe(); }
From source file:saulmm.avengers.model.rest.CharacterItemAdapterFactory.java
License:Mozilla Public License
@Override public <T> TypeAdapter<T> create(Gson gson, final TypeToken<T> type) { final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class); final TypeAdapter<T> customTypeAdapter = new TypeAdapter<T>() { @Override// ww w. j a v a2s . co m public void write(JsonWriter out, T value) throws IOException { delegate.write(out, value); } @Override public T read(JsonReader in) throws IOException { JsonElement jsonElement = elementAdapter.read(in); if (type.getRawType() == saulmm.avengers.model.Character.class) return adaptJsonToCharacter(jsonElement, type); if (type.getRawType() == List.class) return adaptJsonToComic(jsonElement, type); return delegate.fromJsonTree(jsonElement); } }.nullSafe(); return customTypeAdapter; }
From source file:se.joelpet.android.toyreaderforreddit.gson.typeadapters.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (type.getRawType() != baseType) { return null; }/* w ww . j a v a 2 s. co m*/ final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<String, TypeAdapter<?>>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<Class<?>, TypeAdapter<?>>(); for (Map.Entry<String, Class<?>> entry : labelToSubtype.entrySet()) { TypeAdapter<?> delegate = gson.getDelegateAdapter(this, TypeToken.get(entry.getValue())); labelToDelegate.put(entry.getKey(), delegate); subtypeToDelegate.put(entry.getValue(), delegate); } return new TypeAdapter<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement labelJsonElement = jsonElement.getAsJsonObject().remove(typeFieldName); if (labelJsonElement == null) { throw new JsonParseException("cannot deserialize " + baseType + " because it does not define a field named " + typeFieldName); } String label = labelJsonElement.getAsString(); @SuppressWarnings("unchecked") // registration requires that subtype extends T TypeAdapter<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); } // joep: take the "data" jsonElement return delegate.fromJsonTree(jsonElement.getAsJsonObject().remove("data")); } @Override public void write(JsonWriter out, R value) throws IOException { Class<?> srcType = value.getClass(); String label = subtypeToLabel.get(srcType); @SuppressWarnings("unchecked") // registration requires that subtype extends T TypeAdapter<R> delegate = (TypeAdapter<R>) subtypeToDelegate.get(srcType); if (delegate == null) { throw new JsonParseException( "cannot serialize " + srcType.getName() + "; did you forget to register a subtype?"); } JsonObject jsonObject = delegate.toJsonTree(value).getAsJsonObject(); if (jsonObject.has(typeFieldName)) { throw new JsonParseException("cannot serialize " + srcType.getName() + " because it already defines a field named " + typeFieldName); } JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } }; }
From source file:teste.adapter.ArrayAdapterFactory.java
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override/*from w w w. j a v a2 s . co m*/
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
TypeAdapter<T> typeAdapter = null;
try {
if (type.getRawType() == List.class)
typeAdapter = new ArrayAdapter(
(Class) ((ParameterizedType) type.getType()).getActualTypeArguments()[0]);
} catch (Exception e) {
e.printStackTrace();
}
return typeAdapter;
}
From source file:TestGenerator.ArgumentCache.UniversalCollectionTypeAdapterFactory.java
License:Apache License
@Override public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) { Type type = typeToken.getType(); /// hack to obtain hidden constructorConstructor from gson - guarantees that gson has already initialized // and the original CollectionTypeAdapterFactory has been assigned the same constructorConstructor. if (constructorConstructor == null) { try {/*from w ww . ja v a 2s .c o m*/ Field conf = gson.getClass().getDeclaredField("constructorConstructor"); conf.setAccessible(true); constructorConstructor = (ConstructorConstructor) conf.get(gson); } catch (NoSuchFieldException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } } Class<? super T> rawType = typeToken.getRawType(); if (!Collection.class.isAssignableFrom(rawType)) { return null; } Type elementType = $Gson$Types.getCollectionElementType(type, rawType); TypeAdapter<?> elementTypeAdapter = gson.getAdapter(TypeToken.get(elementType)); ObjectConstructor<T> constructor = constructorConstructor.get(typeToken); @SuppressWarnings({ "unchecked", "rawtypes" }) // create() doesn't define a type parameter TypeAdapter<T> result = new Adapter(gson, elementType, elementTypeAdapter, constructor); return result; }
From source file:uk.ac.stfc.isis.ibex.epics.conversion.json.LowercaseEnumTypeAdapterFactory.java
License:Open Source License
/** * {@inheritDoc}//from ww w.j av a 2 s .co m */ @Override public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) { @SuppressWarnings("unchecked") Class<T> rawType = (Class<T>) type.getRawType(); if (!rawType.isEnum()) { return null; } final Map<String, T> lowercaseToConstant = new HashMap<String, T>(); for (T constant : rawType.getEnumConstants()) { lowercaseToConstant.put(toLowercase(constant), constant); } return new TypeAdapter<T>() { @Override public void write(JsonWriter out, T value) throws IOException { if (value == null) { out.nullValue(); } else { out.value(toLowercase(value)); } } @Override public T read(JsonReader reader) throws IOException { if (reader.peek() == JsonToken.NULL) { reader.nextNull(); return null; } else { return lowercaseToConstant.get(reader.nextString()); } } }; }
From source file:us.blanshard.sudoku.messages.Rpc.java
License:Apache License
/** * Registers type adapters in the given builder so that {@link Request} and * {@link Response} objects can be serialized and deserialized in a symmetric * way./*from w ww.j a v a2 s . c o m*/ * * <p> * The request deserializer requires the "method" field of the request to come * before the "params" field, which requirement is not strictly conformant * with JSON. The serializer ensures that they are in that order. * * <p> * Likewise, the response's "id" field must come before the "result" field. */ public static GsonBuilder register(GsonBuilder builder, final Function<String, Type> methodToParamsType, final Function<Integer, Type> idToResultType) { builder.registerTypeAdapterFactory(new TypeAdapterFactory() { @SuppressWarnings("unchecked") @Override public <T> TypeAdapter<T> create(final Gson gson, TypeToken<T> type) { if (type.getRawType() == Request.class) { TypeAdapter<Request> typeAdapter = new RequestAdapter(gson, methodToParamsType); return (TypeAdapter<T>) typeAdapter.nullSafe(); } if (type.getRawType() == Response.class) { TypeAdapter<Response<Object>> typeAdapter = new ResponseAdapter(gson, idToResultType); return (TypeAdapter<T>) typeAdapter.nullSafe(); } return null; } }); return builder.serializeSpecialFloatingPointValues(); }