feign.gson.GsonFactory Maven / Gradle / Ivy
/*
* Copyright 2013 Netflix, Inc.
*
* 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 feign.gson;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.TypeAdapter;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.Type;
import java.util.Map;
import static feign.Util.resolveLastTypeParameter;
final class GsonFactory {
private GsonFactory() {
}
/**
* Registers type adapters by implicit type. Adds one to read numbers in a {@code Map} as Integers.
*/
static Gson create(Iterable> adapters) {
GsonBuilder builder = new GsonBuilder().setPrettyPrinting();
builder.registerTypeAdapter(new TypeToken>() {
}.getType(), new DoubleToIntMapTypeAdapter());
for (TypeAdapter adapter : adapters) {
Type type = resolveLastTypeParameter(adapter.getClass(), TypeAdapter.class);
builder.registerTypeAdapter(type, adapter);
}
return builder.create();
}
}