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SQL Server implementation of the reactive repository interface in core project

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/*
 * Copyright 2018 Zuunr AB
 *
 * 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.zuunr.restbed.repository.sqlserver.util;

import org.springframework.stereotype.Component;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.zuunr.json.JsonObject;
import com.zuunr.json.JsonObjectFactory;

/**
 * The ResourceDeserializer is responsible for converting Objects
 * to a defined resource class.
 * 
 * @author Mikael Ahlberg
 */
@Component
public class ResourceDeserializer {

    private final ObjectMapper objectMapper = new ObjectMapper();
    private final JsonObjectFactory jsonObjectFactory = new JsonObjectFactory();

    /**
     * Deserializes the provided resource to the given resource class.
     * 
     * If an error occurs a {@link DeserializationException} will be thrown.
     * 
     * @param resource is the resource to convert
     * @param resourceClass is the class to convert to
     * @return a new object of resourceClass type
     */
    public  T deserialize(Object resource, Class resourceClass) {
        try {
            return objectMapper.convertValue(resource, resourceClass);
        } catch (Exception e) {
            throw new DeserializationException("Could not deserialize resource to given type", e);
        }
    }

    /**
     * Convenience method for deserializing {@link JsonObject}.
     * 
     * If an error occurs a {@link DeserializationException} will be thrown.
     * 
     * @param resource is the resource to convert
     * @param resourceClass is the class to convert to
     * @return a new object of resourceClass type
     */
    public  T deserializeJsonObject(JsonObject resource, Class resourceClass) {
        return deserialize(resource.asMapsAndLists(), resourceClass);
    }

    /**
     * Convenience method for deserializing a json String. It will internally be
     * converted to a {@link JsonObject} before converted to the specified resource
     * class.
     * 
     * If an error occurs a {@link DeserializationException} will be thrown.
     * 
     * @param jsonResource is the string containing the json
     * @param resourceClass is the class to convert to
     * @return a new object of resourceClass type
     */
    public  T deserializeJson(String jsonResource, Class resourceClass) {
        JsonObject resourceAsJsonObject = jsonObjectFactory.createJsonObject(jsonResource);

        return deserializeJsonObject(resourceAsJsonObject, resourceClass);
    }
}