retrofit.JacksonConverterFactory Maven / Gradle / Ivy
/*
* Copyright (C) 2015 Square, 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 retrofit;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectReader;
import com.fasterxml.jackson.databind.ObjectWriter;
import java.lang.reflect.Type;
/** A {@linkplain Converter.Factory converter} which uses Jackson. */
public final class JacksonConverterFactory implements Converter.Factory {
/** Create an instance using a default {@link ObjectMapper} instance for conversion. */
public static JacksonConverterFactory create() {
return create(new ObjectMapper());
}
/** Create an instance using {@code mapper} for conversion. */
public static JacksonConverterFactory create(ObjectMapper mapper) {
return new JacksonConverterFactory(mapper);
}
private final ObjectMapper mapper;
private JacksonConverterFactory(ObjectMapper mapper) {
if (mapper == null) throw new NullPointerException("mapper == null");
this.mapper = mapper;
}
/** Create a converter for {@code type}. */
@Override public Converter get(Type type) {
JavaType javaType = mapper.getTypeFactory().constructType(type);
ObjectWriter writer = mapper.writerWithType(javaType);
ObjectReader reader = mapper.reader(javaType);
return new JacksonConverter<>(writer, reader);
}
}