io.xream.sqli.util.SqliStringUtil Maven / Gradle / Ivy

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/*
 * Copyright 2020 io.xream.sqli
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.xream.sqli.util;

/**
 * @Author Sim
 */
public final class SqliStringUtil {

	private SqliStringUtil(){}
	
	public static boolean isNotNull(String str){
		return !isNullOrEmpty(str);
	}
	
	public static boolean isNullOrEmpty(String str){
		return str == null || str.equals("") || str.equals("null") || str.equals("NaN") || str.equals("undefined");
	}

	public static boolean isNullOrEmpty(Object obj) {

		if (obj == null)
			return true;
		Class clz = obj.getClass();
		if (clz == String.class) {
			return isNullOrEmpty(obj.toString());
		}
		return false;
	}

}