io.knotx.util.JsonObjectUtil.java Source code

Introduction

Here is the source code for io.knotx.util.JsonObjectUtil.java

Source

/*
 * Copyright (C) 2016 Cognifide Limited
 *
 * 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 io.knotx.util;

import io.vertx.core.json.JsonObject;

public final class JsonObjectUtil {

    private JsonObjectUtil() {
        //util class
    }

    public static JsonObject deepMerge(JsonObject source, JsonObject other) {
        JsonObject result = source.copy();
        other.forEach(entry -> {
            if (result.containsKey(entry.getKey())) {
                if (isKeyAJsonObject(result, entry.getKey()) && entry.getValue() instanceof JsonObject) {

                    result.put(entry.getKey(),
                            deepMerge(source.getJsonObject(entry.getKey()), (JsonObject) entry.getValue()));
                } else { //Override whole key, if value is not jsonObject
                    result.put(entry.getKey(), entry.getValue());
                }
            } else {
                result.put(entry.getKey(), entry.getValue());
            }
        });

        return result;
    }

    private static boolean isKeyAJsonObject(JsonObject object, String key) {
        return object.getMap().get(key) instanceof JsonObject;
    }
}