content: /*
   *  Copyright Beijing 58 Information Technology Co.,Ltd.
   *
   *  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 com.bj58.spat.gaea.serializer.component.helper;
  
  /**
   * StrHelper
   * 
   * @author Service Platform Architecture Team (spat@58.com)
   */
  public class StrHelper {
  
  	public static String EmptyString = "";
  
  	public static int GetHashcode(String str) {
  		int hash1 = 5381;
  		int hash2 = hash1;
  		int len = str.length();
  		for (int i = 0; i < len; i++) {
  			int c = str.charAt(i);
  			hash1 = ((hash1 << 5) + hash1) ^ c;
  			if (++i >= len) {
  				break;
  			}
  			c = str.charAt(i);
  			hash2 = ((hash2 << 5) + hash2) ^ c;
  		}
  		return hash1 + (hash2 * 1566083941);
  	}
  
  	public static boolean isEmptyOrNull(String str) {
  		if (str == null || "".equals(str)) {
  			return true;
  		}
  		return false;
  	}
  }
  