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Language Independent Validation Rules (v2.0) Springframework annotation validator support

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package io.github.livr;

import org.apache.commons.lang3.math.NumberUtils;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import java.util.Map;

/**
 * Created by vladislavbaluk on 9/28/2017.
 */
public class LIVRUtils {

    public static JSONParser newParser() {
        return new JSONParser();
    }

    public static boolean isPrimitiveValue(Object value) {
        if (value.getClass() == String.class || value.getClass() == Boolean.class) return true;
        if (value instanceof Number) return true;
        if (value.equals("true") || value.equals("false")) return true;
        return false;
    }

    public static boolean looksLikeNumber(Object value) {

        return value instanceof Number || NumberUtils.isCreatable(value + "");
    }

    public static boolean isObject(Object value) {
        if (value.getClass() == JSONObject.class || value.getClass() == JSONArray.class) {
            return true;
        }

        try {
            return newParser().parse(String.valueOf(value)) != null;
        } catch (ParseException e) {
            return false;
        }
    }

    public static boolean isEmptyObject(Map map) {
        return map.isEmpty();
    }

    public static boolean isNoValue(Object value) {
        return value == null || (value + "").equals("");
    }

    public static boolean isInteger(Object value) {
        if (value instanceof Long) {
            return true;
        }

        return NumberUtils.isDigits(value + "");
    }

    public static boolean isDecimal(Object value) {
        if (value instanceof Double) {
            return true;
        }

        try {
            Double.valueOf(value + "");
        } catch (NumberFormatException nfe) {
            return false;
        }
        return true;
    }
}