List of usage examples for com.google.gson.reflect TypeToken getRawType
public final Class<? super T> getRawType()
From source file:BundleTypeAdapterFactory.java
License:Apache License
@SuppressWarnings("unchecked") @Override// ww w .ja v a 2 s .c o m public <T> TypeAdapter<T> create(final Gson gson, TypeToken<T> type) { if (!Bundle.class.isAssignableFrom(type.getRawType())) { return null; } return (TypeAdapter<T>) new TypeAdapter<Bundle>() { @Override public void write(JsonWriter out, Bundle bundle) throws IOException { if (bundle == null) { out.nullValue(); return; } out.beginObject(); for (String key : bundle.keySet()) { out.name(key); Object value = bundle.get(key); if (value == null) { out.nullValue(); } else { gson.toJson(value, value.getClass(), out); } } out.endObject(); } @Override public Bundle read(JsonReader in) throws IOException { switch (in.peek()) { case NULL: in.nextNull(); return null; case BEGIN_OBJECT: return toBundle(readObject(in)); default: throw new IOException("expecting object: " + in.getPath()); } } private Bundle toBundle(List<Pair<String, Object>> values) throws IOException { Bundle bundle = new Bundle(); for (Pair<String, Object> entry : values) { String key = entry.first; Object value = entry.second; if (value instanceof String) { bundle.putString(key, (String) value); } else if (value instanceof Integer) { bundle.putInt(key, ((Integer) value).intValue()); } else if (value instanceof Long) { bundle.putLong(key, ((Long) value).longValue()); } else if (value instanceof Double) { bundle.putDouble(key, ((Double) value).doubleValue()); } else if (value instanceof Parcelable) { bundle.putParcelable(key, (Parcelable) value); } else if (value instanceof List) { List<Pair<String, Object>> objectValues = (List<Pair<String, Object>>) value; Bundle subBundle = toBundle(objectValues); bundle.putParcelable(key, subBundle); } else { throw new IOException("Unparcelable key, value: " + key + ", " + value); } } return bundle; } private List<Pair<String, Object>> readObject(JsonReader in) throws IOException { List<Pair<String, Object>> object = new ArrayList<Pair<String, Object>>(); in.beginObject(); while (in.peek() != JsonToken.END_OBJECT) { switch (in.peek()) { case NAME: String name = in.nextName(); Object value = readValue(in); object.add(new Pair<String, Object>(name, value)); break; case END_OBJECT: break; default: throw new IOException("expecting object: " + in.getPath()); } } in.endObject(); return object; } private Object readValue(JsonReader in) throws IOException { switch (in.peek()) { case BEGIN_ARRAY: return readArray(in); case BEGIN_OBJECT: return readObject(in); case BOOLEAN: return in.nextBoolean(); case NULL: in.nextNull(); return null; case NUMBER: return readNumber(in); case STRING: return in.nextString(); default: throw new IOException("expecting value: " + in.getPath()); } } private Object readNumber(JsonReader in) throws IOException { double doubleValue = in.nextDouble(); if (doubleValue - Math.ceil(doubleValue) == 0) { long longValue = (long) doubleValue; if (longValue >= Integer.MIN_VALUE && longValue <= Integer.MAX_VALUE) { return (int) longValue; } return longValue; } return doubleValue; } @SuppressWarnings("rawtypes") private List readArray(JsonReader in) throws IOException { List list = new ArrayList(); in.beginArray(); while (in.peek() != JsonToken.END_ARRAY) { Object element = readValue(in); list.add(element); } in.endArray(); return list; } }; }
From source file:RestrictSerializationToBaseClassFactory.java
License:Apache License
@Override public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { Class incoming = type.getRawType(); if (subClasses != null) { boolean matched = false; for (Class<? extends B> subClass : subClasses) { if (incoming == subClass) { matched = true;/*from ww w .j av a 2 s .c o m*/ break; } } if (!matched) return null; } else { // restricting all sub-classes since none specified // don't match the baseClass since we want to use the default factory for it if (incoming == baseClass || !baseClass.isAssignableFrom(incoming)) return null; } TypeAdapter<T> adapter = new TypeAdapter<T>() { @Override public T read(JsonReader reader) throws IOException { final TypeAdapter subAdapter = gson.getDelegateAdapter(RestrictSerializationToBaseClassFactory.this, type); return (T) subAdapter.read(reader); } @Override public void write(JsonWriter writer, T value) throws IOException { final TypeAdapter<B> baseAdapter = gson.getAdapter(baseClass); baseAdapter.write(writer, (B) value); } }; return adapter; }
From source file:blog.ClassTypeAdapterFactory.java
License:Apache License
@SuppressWarnings("unchecked") @Override/*from ww w . j av a 2 s . c om*/ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) { if (!Class.class.isAssignableFrom(typeToken.getRawType())) { return null; } return (TypeAdapter<T>) new ClassTypeAdapter(); }
From source file:ca.ualberta.cs.team1travelexpenseapp.gsonUtils.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (type.getRawType() != baseType) { return null; }/* www .j av a 2s.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?"); } 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); } }; }
From source file:cc.kave.commons.utils.json.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (type.getRawType() != baseType) { return null; }/*w ww .j ava 2s . 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); // (kave adaptation) was: ".remove(typeFiledName)" 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 { if (value == null) { Streams.write(null, out); return; } 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(); // (kave adaptation) disabled check // 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:ch.uzh.ifi.seal.soprafs15.group_00_android.models.gson.AutoValueAdapterFactory.java
License:Apache License
@SuppressWarnings("unchecked") @Override// w ww . j av a 2 s.co m 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 + ".AutoParcel_" + className; try { Class<?> autoValueType = Class.forName(autoValueName); return (TypeAdapter<T>) gson.getAdapter(autoValueType); } catch (ClassNotFoundException e) { throw new RuntimeException("Could not load AutoParcel type " + autoValueName, e); } }
From source file:cmput301w15t07.TravelTracker.util.DeletionFlagTypeAdapterFactory.java
License:Apache License
@SuppressWarnings("unchecked") @Override/*from w w w . ja v a 2 s . com*/ public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) { // TODO technically isAssignableFrom is deprecated and we should change // it. Maybe some time in the future. if (!DeletionFlag.class.isAssignableFrom(type.getRawType())) { return null; } Log.d("TypeAdapter", "Good type: " + type.getRawType().getCanonicalName()); for (Type param : ((ParameterizedType) type.getType()).getActualTypeArguments()) { Log.d("TypeAdapter", "Parameter type: " + param.toString()); } // Get the parameterizing type Type elementType = ((ParameterizedType) type.getType()).getActualTypeArguments()[0]; // Get adapters specific to the object we need so that we can delegate TypeAdapter<?> documentAdapter = gson.getAdapter(TypeToken.get(elementType)); return (TypeAdapter<T>) new DeletionFlagAdapter<Document>((TypeAdapter<Document>) documentAdapter); }
From source file:cn.ieclipse.af.demo.sample.volley.adapter.CollectionsAdapter.java
License:Apache License
@Override public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) { Type type = typeToken.getType(); Class<? super T> rawType = typeToken.getRawType(); if (!Collection.class.isAssignableFrom(rawType)) { return null; }// w w w . j a v a2 s .c o m 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:cn.taop.utils.GSONUtils.java
License:Apache License
/** * {@code JSON} ??/* w ww . j av a2s . c om*/ * * @param <T> ?? * @param json {@code JSON} * @param token {@code com.google.gson.reflect.TypeToken} * @param datePattern ?? * @return {@code JSON} * @since 1.0 */ public static <T> T fromJson(String json, TypeToken<T> token, String datePattern) { if (StringUtils.isBlank(json)) { return null; } GsonBuilder builder = new GsonBuilder(); if (StringUtils.isBlank(datePattern)) { datePattern = DEFAULT_DATE_PATTERN; } Gson gson = builder.create(); try { return gson.fromJson(json, token.getType()); } catch (Exception ex) { LOGGER.error(json + " ? " + token.getRawType().getName() + " !", ex); return null; } }
From source file:co.cask.cdap.common.io.CaseInsensitiveEnumTypeAdapterFactory.java
License:Apache License
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) { @SuppressWarnings("unchecked") Class<T> rawType = (Class<T>) type.getRawType(); if (!rawType.isEnum()) { return null; }/*ww w. j av a 2 s.co m*/ final Map<String, T> lowercaseToConstant = new HashMap<>(); 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(toLowercase(reader.nextString())); } } }; }