/* * Generated file - Do not edit! */package cn.edu.zucc.research.ejb.session.userDetail;/** * Utility class for UserDetailS. * @generated  * @lomboz generated */public class UserDetailSUtil{   /** Cached remote home (EJBHome). Uses lazy loading to obtain its value (loaded by getHome() methods). */   private static cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome cachedRemoteHome = null;   /** Cached local home (EJBLocalHome). Uses lazy loading to obtain its value (loaded by getLocalHome() methods). */   private static cn.edu.zucc.research.ejb.session.userDetail.UserDetailSLocalHome cachedLocalHome = null;   private static Object lookupHome(java.util.Hashtable environment, String jndiName, Class narrowTo) throws javax.naming.NamingException {      // Obtain initial context      javax.naming.InitialContext initialContext = new javax.naming.InitialContext(environment);      try {         Object objRef = initialContext.lookup(jndiName);         // only narrow if necessary         if (narrowTo.isInstance(java.rmi.Remote.class))            return javax.rmi.PortableRemoteObject.narrow(objRef, narrowTo);         else            return objRef;      } finally {         initialContext.close();      }   }   // Home interface lookup methods   /**    * Obtain remote home interface from default initial context    * @return Home interface for UserDetailS. Lookup using JNDI_NAME    */   public static cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome getHome() throws javax.naming.NamingException   {      if (cachedRemoteHome == null) {            cachedRemoteHome = (cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome) lookupHome(null, cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome.JNDI_NAME, cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome.class);      }      return cachedRemoteHome;   }   /**    * Obtain remote home interface from parameterised initial context    * @param environment Parameters to use for creating initial context    * @return Home interface for UserDetailS. Lookup using JNDI_NAME    */   public static cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome getHome( java.util.Hashtable environment ) throws javax.naming.NamingException   {       return (cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome) lookupHome(environment, cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome.JNDI_NAME, cn.edu.zucc.research.ejb.session.userDetail.UserDetailSHome.class);   }   /**    * Obtain local home interface from default initial context    * @return Local home interface for UserDetailS. Lookup using JNDI_NAME    */   public static cn.edu.zucc.research.ejb.session.userDetail.UserDetailSLocalHome getLocalHome() throws javax.naming.NamingException   {      if (cachedLocalHome == null) {            cachedLocalHome = (cn.edu.zucc.research.ejb.session.userDetail.UserDetailSLocalHome) lookupHome(null, cn.edu.zucc.research.ejb.session.userDetail.UserDetailSLocalHome.JNDI_NAME, cn.edu.zucc.research.ejb.session.userDetail.UserDetailSLocalHome.class);      }      return cachedLocalHome;   }   /** Cached per JVM server IP. */   private static String hexServerIP = null;   // initialise the secure random instance   private static final java.security.SecureRandom seeder = new java.security.SecureRandom();   /**    * A 32 byte GUID generator (Globally Unique ID). These artificial keys SHOULD <strong>NOT </strong> be seen by the user,    * not even touched by the DBA but with very rare exceptions, just manipulated by the database and the programs.    *    * Usage: Add an id field (type java.lang.String) to your EJB, and add setId(XXXUtil.generateGUID(this)); to the ejbCreate method.    */   public static final String generateGUID(Object o) {       StringBuffer tmpBuffer = new StringBuffer(16);       if (hexServerIP == null) {           java.net.InetAddress localInetAddress = null;           try {               // get the inet address               localInetAddress = java.net.InetAddress.getLocalHost();           }           catch (java.net.UnknownHostException uhe) {               System.err.println("UserDetailSUtil: Could not get the local IP address using InetAddress.getLocalHost()!");               // todo: find better way to get around this...               uhe.printStackTrace();               return null;           }           byte serverIP[] = localInetAddress.getAddress();           hexServerIP = hexFormat(getInt(serverIP), 8);       }       String hashcode = hexFormat(System.identityHashCode(o), 8);       tmpBuffer.append(hexServerIP);       tmpBuffer.append(hashcode);       long timeNow      = System.currentTimeMillis();       int timeLow       = (int)timeNow & 0xFFFFFFFF;       int node          = seeder.nextInt();       StringBuffer guid = new StringBuffer(32);       guid.append(hexFormat(timeLow, 8));       guid.append(tmpBuffer.toString());       guid.append(hexFormat(node, 8));       return guid.toString();   }   private static int getInt(byte bytes[]) {       int i = 0;       int j = 24;       for (int k = 0; j >= 0; k++) {           int l = bytes[k] & 0xff;           i += l << j;           j -= 8;       }       return i;   }   private static String hexFormat(int i, int j) {       String s = Integer.toHexString(i);       return padHex(s, j) + s;   }   private static String padHex(String s, int i) {       StringBuffer tmpBuffer = new StringBuffer();       if (s.length() < i) {           for (int j = 0; j < i - s.length(); j++) {               tmpBuffer.append('0');           }       }       return tmpBuffer.toString();   }}