Java tutorial
/* * Copyright (C) 2012 Google 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 com.google.caliper.json; import static java.lang.annotation.ElementType.FIELD; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.ElementType.PARAMETER; import static java.lang.annotation.RetentionPolicy.RUNTIME; import com.google.gson.ExclusionStrategy; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.TypeAdapterFactory; import com.google.gson.internal.bind.TypeAdapters; import com.google.inject.AbstractModule; import com.google.inject.BindingAnnotation; import com.google.inject.Key; import com.google.inject.Provides; import com.google.inject.multibindings.Multibinder; import org.joda.time.Instant; import java.lang.annotation.Retention; import java.lang.annotation.Target; import java.util.Set; /** * Binds a {@link Gson} instance suitable for serializing and deserializing Caliper * {@linkplain com.google.caliper.model model} objects. */ public final class GsonModule extends AbstractModule { @Override protected void configure() { Multibinder<TypeAdapterFactory> typeAdapterFactoryMultibinder = Multibinder.newSetBinder(binder(), TypeAdapterFactory.class); typeAdapterFactoryMultibinder.addBinding().to(ImmutableListTypeAdatperFactory.class); typeAdapterFactoryMultibinder.addBinding().to(ImmutableMapTypeAdapterFactory.class); typeAdapterFactoryMultibinder.addBinding().to(NaturallySortedMapTypeAdapterFactory.class); typeAdapterFactoryMultibinder.addBinding().to(Key.get(TypeAdapterFactory.class, ForInstant.class)); typeAdapterFactoryMultibinder.addBinding().to(ImmutableMultimapTypeAdapterFactory.class); bind(ExclusionStrategy.class).to(AnnotationExclusionStrategy.class); } @Retention(RUNTIME) @Target({ FIELD, PARAMETER, METHOD }) @BindingAnnotation private @interface ForInstant { } @Provides @ForInstant TypeAdapterFactory provideTypeAdapterFactoryForInstant(InstantTypeAdapter typeAdapter) { return TypeAdapters.newFactory(Instant.class, typeAdapter); } @Provides Gson provideGson(Set<TypeAdapterFactory> typeAdapterFactories, ExclusionStrategy exclusionStrategy) { GsonBuilder gsonBuilder = new GsonBuilder().setExclusionStrategies(exclusionStrategy); for (TypeAdapterFactory typeAdapterFactory : typeAdapterFactories) { gsonBuilder.registerTypeAdapterFactory(typeAdapterFactory); } return gsonBuilder.create(); } }