Examples of java.rmi.server.UID

java.rmi.server.UID
A UID represents an identifier that is unique over time with respect to the host it is generated on, or one of 2¹⁶ "well-known" identifiers.
The {@link #UID()} constructor can be used to generate anidentifier that is unique over time with respect to the host it is generated on. The {@link #UID(short)} constructor can be used tocreate one of 2¹⁶ well-known identifiers.
A UID instance contains three primitive values:
- unique, an int that uniquely identifies the VM that this UID was generated in, with respect to its host and at the time represented by the time value (an example implementation of the unique value would be a process identifier), or zero for a well-known UID
- time, a long equal to a time (as returned by {@link System#currentTimeMillis()}) at which the VM that this UID was generated in was alive, or zero for a well-known UID
- count, a short to distinguish UIDs generated in the same VM with the same time value
An independently generated UID instance is unique over time with respect to the host it is generated on as long as the host requires more than one millisecond to reboot and its system clock is never set backward. A globally unique identifier can be constructed by pairing a UID instance with a unique host identifier, such as an IP address. @author Ann Wollrath @author Peter Jones @version 1.24, 06/02/23 @since JDK1.1

                 "GUID for the cluster.");
      }


      // 2nd: host-GUID strategy
      //
      String uid = new UID().toString();
      return hostIP + ":" + uid;
   }

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    String localhost = "unknown_local_host";
    try {
      localhost = InetAddress.getLocalHost().getHostAddress();
    } catch (UnknownHostException e) {
    }
    return localhost + new UID().toString();
  }

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import java.rmi.server.UID;


public class UIDGenerator implements UniqueIdGenerator {
  public String nextId() {
    return new UID().toString();
  }

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  private static byte[] generateSync() {
    try {
      MessageDigest digester = MessageDigest.getInstance("MD5");
      long time = System.currentTimeMillis();
      digester.update((new UID()+"@"+time).getBytes());
      return digester.digest();
    } catch (NoSuchAlgorithmException e) {
      throw new RuntimeException(e);
    }
  }

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    protected String autoGenerateID(PortletDefinition pd)
    {
        String appName = ((MutablePortletApplication)pd.getPortletApplicationDefinition()).getName();
        String portletName = pd.getName();
        return appName+"::"+portletName+"::"+new UID().toString();
    }

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    protected String autoGenerateID(PortletDefinition pd)
    {
        String appName = ((MutablePortletApplication)pd.getPortletApplicationDefinition()).getName();
        String portletName = pd.getName();
        return appName+"::"+portletName+"::"+new UID().toString();
    }

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     * address can be obtained for this host that is unique and constant
     * for the lifetime of this object.  <p>
     */
    public VMID() {
        addr = localAddr;
        uid = new UID();
    }

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      public void createTempFile()
      {
         try
         {
            tempFile = File.createTempFile(new UID().toString().replace(":", "-"), ".upload");
            tempFile.deleteOnExit();
            fOut = new FileOutputStream(tempFile);            
         }
         catch (IOException ex)
         {

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   }
   
   protected String generateTokenValue()
   {
      StringBuilder sb = new StringBuilder();
      sb.append(new UID().toString());
      sb.append(":");
      sb.append(random.nextLong());
      return sb.toString();
   }

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      return new QuartzTriggerHandle(triggerName);
   }
   
   private String nextUniqueName ()
   {
      return (new UID()).toString();
   }

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