/*
* Copyright 2012-2017 the original author or authors.
*
* 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 org.springframework.boot.actuate.endpoint.jmx;
import java.util.List;
import java.util.Map;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* Internal converter that uses an {@link ObjectMapper} to convert to JSON.
*
* @author Christian Dupuis
* @author Andy Wilkinson
* @author Phillip Webb
*/
class DataConverter {
private final ObjectMapper objectMapper;
private final JavaType listObject;
private final JavaType mapStringObject;
DataConverter(ObjectMapper objectMapper) {
this.objectMapper = (objectMapper == null ? new ObjectMapper() : objectMapper);
this.listObject = this.objectMapper.getTypeFactory()
.constructParametricType(List.class, Object.class);
this.mapStringObject = this.objectMapper.getTypeFactory()
.constructParametricType(Map.class, String.class, Object.class);
}
public Object convert(Object data) {
if (data == null) {
return null;
}
if (data instanceof String) {
return data;
}
if (data.getClass().isArray() || data instanceof List) {
return this.objectMapper.convertValue(data, this.listObject);
}
return this.objectMapper.convertValue(data, this.mapStringObject);
}
}