Total.java

package org.softlang.company.features;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

public class Total {
	/**
	 * Method to get the total of all salaries
	 * @param obj JsonObject to compute total for
	 * @return total of obj
	 */
	public static double total(JsonObject obj) {
		double result = 0.0;
		if (obj.has("departments")) {
			result += total(obj.getAsJsonArray("departments"));
		}
		if (obj.has("employees")) {
			result += total(obj.getAsJsonArray("employees"));
		}
		if (obj.has("manager")) {
			result += total(obj.getAsJsonObject("manager"));
		}
		if (obj.has("salary")) {
			result += obj.getAsJsonPrimitive("salary").getAsDouble();
		}
		return result;
	}

	/**
	 * 
	 * @param array
	 * @return
	 */
	private static double total(JsonArray array) {
		double result = 0.0;
		for (JsonElement temp : array)
			if (temp.isJsonObject()) {
				result += total(temp.getAsJsonObject());
			}
		return result;
	}
}