List of usage examples for com.google.gson.reflect TypeToken get
public static <T> TypeToken<T> get(Class<T> type)
From source file:org.codice.admin.router.RuntimeTypeAdapterFactory.java
License:Open Source License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (null == type || !baseType.isAssignableFrom(type.getRawType())) { return null; }/*ww w .j a v a 2 s .c om*/ 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); } }.nullSafe(); }
From source file:org.eclipse.lsp4j.jsonrpc.debug.adapters.DebugMessageTypeAdapter.java
License:Open Source License
private Message createMessage(String messageType, int seq, int request_seq, String method, boolean success, String errorMessage, Object params, Object body) throws JsonParseException { if (messageType == null) { throw new JsonParseException("Unable to identify the input message. Missing 'type' field."); }//from ww w . j av a 2 s .c om switch (messageType) { case "request": { DebugRequestMessage message = new DebugRequestMessage(); message.setId(seq); message.setMethod(method); message.setParams(params); return message; } case "event": { DebugNotificationMessage message = new DebugNotificationMessage(); message.setId(seq); message.setMethod(method); message.setParams(body); return message; } case "response": { DebugResponseMessage message = new DebugResponseMessage(); message.setId(request_seq); message.setResponseId(seq); message.setMethod(method); if (!success) { ResponseError error = new ResponseError(); error.setCode(ResponseErrorCode.UnknownErrorCode); error.setData(body); if (errorMessage == null) { // Some debug servers/clients don't provide a "message" field on an error. // Generally in those cases the body has some extra details to figure out // what went wrong. errorMessage = "Unset error message."; } error.setMessage(errorMessage); message.setError(error); } else { if (body instanceof JsonElement) { // Type of result could not be resolved - try again with the parsed JSON tree MethodProvider methodProvider = handler.getMethodProvider(); if (methodProvider != null) { String resolvedMethod = methodProvider.resolveMethod(Integer.toString(request_seq)); if (resolvedMethod != null) { JsonRpcMethod jsonRpcMethod = handler.getJsonRpcMethod(resolvedMethod); if (jsonRpcMethod != null) { TypeAdapter<?> typeAdapter = null; Type returnType = jsonRpcMethod.getReturnType(); if (jsonRpcMethod.getReturnTypeAdapterFactory() != null) typeAdapter = jsonRpcMethod.getReturnTypeAdapterFactory().create(gson, TypeToken.get(returnType)); JsonElement jsonElement = (JsonElement) body; if (typeAdapter != null) body = typeAdapter.fromJsonTree(jsonElement); else body = gson.fromJson(jsonElement, returnType); } } } } message.setResult(body); } return message; } default: throw new JsonParseException("Unable to identify the input message."); } }
From source file:org.eclipse.lsp4j.jsonrpc.json.adapters.CollectionTypeAdapter.java
License:Open Source License
@Override public void write(JsonWriter out, Collection<E> collection) throws IOException { if (collection == null) { out.nullValue();//from w w w . j av a 2s .c o m return; } out.beginArray(); for (E element : collection) { if (element != null && elementType != element.getClass() && (elementType instanceof TypeVariable<?> || elementType instanceof Class<?>)) { @SuppressWarnings("unchecked") TypeAdapter<E> runtimeTypeAdapter = (TypeAdapter<E>) gson .getAdapter(TypeToken.get(element.getClass())); runtimeTypeAdapter.write(out, element); } else { elementTypeAdapter.write(out, element); } } out.endArray(); }
From source file:org.eclipse.lsp4j.jsonrpc.json.adapters.CollectionTypeAdapterFactory.java
License:Open Source License
@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
if (!Collection.class.isAssignableFrom(typeToken.getRawType()))
return null;
Type[] elementTypes = TypeUtils.getElementTypes(typeToken, Collection.class);
if (elementTypes.length != 1)
return null;
TypeAdapter<?> elementTypeAdapter = gson.getAdapter(TypeToken.get(elementTypes[0]));
Supplier<Collection<Object>> constructor = getConstructor(
(Class<Collection<Object>>) typeToken.getRawType());
return new Adapter(gson, elementTypes[0], elementTypeAdapter, constructor);
}
From source file:org.eclipse.lsp4j.jsonrpc.json.adapters.MessageTypeAdapter.java
License:Open Source License
/** * Convert the json input into the result object corresponding to the call made * by id./* www . j a v a 2 s. c om*/ * * If the id is not known until after parsing, call * {@link #parseResult(Object, String)} on the return value of this call for a * second chance conversion. * * @param in * json input to read from * @param id * id of request message this is in response to * @return correctly typed object if the correct expected type can be * determined, or a JsonElement representing the result */ protected Object parseResult(JsonReader in, String id) throws JsonIOException, JsonSyntaxException { Type type = null; MethodProvider methodProvider = handler.getMethodProvider(); if (methodProvider != null && id != null) { String resolvedMethod = methodProvider.resolveMethod(id); if (resolvedMethod != null) { JsonRpcMethod jsonRpcMethod = handler.getJsonRpcMethod(resolvedMethod); if (jsonRpcMethod != null) { type = jsonRpcMethod.getReturnType(); if (jsonRpcMethod.getReturnTypeAdapterFactory() != null) { TypeAdapter<?> typeAdapter = jsonRpcMethod.getReturnTypeAdapterFactory().create(gson, TypeToken.get(type)); try { if (typeAdapter != null) return typeAdapter.read(in); } catch (IOException exception) { throw new JsonIOException(exception); } } } } } return fromJson(in, type); }
From source file:org.eclipse.lsp4j.jsonrpc.json.adapters.MessageTypeAdapter.java
License:Open Source License
/** * Convert the JsonElement into the result object corresponding to the call made * by id. If the result is already converted, does nothing. * * @param result/* w w w. j ava 2s . c o m*/ * json element to read from * @param id * id of request message this is in response to * @return correctly typed object if the correct expected type can be * determined, or result unmodified if no conversion can be done. */ protected Object parseResult(Object result, String id) throws JsonSyntaxException { if (result instanceof JsonElement) { // Type of result could not be resolved - try again with the parsed JSON tree Type type = null; MethodProvider methodProvider = handler.getMethodProvider(); if (methodProvider != null) { String resolvedMethod = methodProvider.resolveMethod(id); if (resolvedMethod != null) { JsonRpcMethod jsonRpcMethod = handler.getJsonRpcMethod(resolvedMethod); if (jsonRpcMethod != null) { type = jsonRpcMethod.getReturnType(); if (jsonRpcMethod.getReturnTypeAdapterFactory() != null) { TypeAdapter<?> typeAdapter = jsonRpcMethod.getReturnTypeAdapterFactory().create(gson, TypeToken.get(type)); if (typeAdapter != null) return typeAdapter.fromJsonTree((JsonElement) result); } } } } return fromJson((JsonElement) result, type); } return result; }
From source file:org.eclipse.recommenders.utils.gson.MultisetTypeAdapterFactory.java
License:Open Source License
@Override public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) { Type type = typeToken.getType(); if (typeToken.getRawType() != Multiset.class || !(type instanceof ParameterizedType)) { return null; }/* ww w . j av a2 s .c o m*/ Type elementType = ((ParameterizedType) type).getActualTypeArguments()[0]; TypeAdapter<?> elementAdapter = gson.getAdapter(TypeToken.get(elementType)); return (TypeAdapter<T>) newMultisetAdapter(elementAdapter); }
From source file:org.fs.net.converter.GsonConverterFactory.java
License:Apache License
private TypeAdapter<?> typeAdapterFromType(Type type) { return gson.getAdapter(TypeToken.get(type)); }
From source file:org.immutables.fixture.marshal.Marshaling.java
License:Apache License
@SuppressWarnings({ "resource", "unchecked" })
public static String toJson(Object object) {
TypeAdapter<Object> adapter = GSON.getAdapter((TypeToken<Object>) TypeToken.get(object.getClass()));
try {/*from www. j a v a 2s . co m*/
StringWriter stringWriter = new StringWriter();
JsonGeneratorWriter writer = new JsonGeneratorWriter(JSON_FACTORY.createGenerator(stringWriter));
if (adapter instanceof com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.Adapter) {
throw new IllegalStateException("Immutable adapters not registered");
}
GSON.toJson(object, object.getClass(), writer);
writer.close();
return stringWriter.toString();
} catch (IOException ex) {
throw Throwables.propagate(ex);
}
}
From source file:org.immutables.fixture.marshal.Marshaling.java
License:Apache License
@SuppressWarnings({ "resource", "unchecked" })
public static <T> T fromJson(String string, Class<T> type) {
TypeAdapter<Object> adapter = GSON.getAdapter((TypeToken<Object>) TypeToken.get(type));
try {/* www . j a v a2 s . co m*/
if (adapter instanceof com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.Adapter) {
throw new IllegalStateException("Immutable adapters not registered");
}
JsonParserReader reader = new JsonParserReader(JSON_FACTORY.createParser(string));
return GSON.fromJson(reader, type);
} catch (IOException ex) {
throw Throwables.propagate(ex);
}
}