JsonValueConverter.java

package org.stagemonitor.configuration.converter;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;

public class JsonValueConverter<T> implements ValueConverter<T> {

	private final TypeReference<T> typeReference;
	private final ObjectMapper objectMapper;

	public JsonValueConverter(TypeReference<T> typeReference) {
		this.typeReference = typeReference;
		objectMapper = new ObjectMapper();
	}

	@Override
	public T convert(String s) {
		try {
			return objectMapper.readValue(s, typeReference);
		} catch (IOException e) {
			throw new IllegalArgumentException(e);
		}
	}

	@Override
	public String toString(T value) {
		if (value == null) {
			return null;
		}
		try {
			return objectMapper.writeValueAsString(value);
		} catch (JsonProcessingException e) {
			throw new IllegalArgumentException(e);
		}
	}
}