Examples of net.jini.discovery.DiscoveryGroupManagement

net.jini.discovery.DiscoveryGroupManagement
This interface defines methods and constants related to the management of the sets of lookup services that are to be discovered using the multicast discovery protocol; that is, lookup services that are discovered by way of group discovery. The methods of this interface define how an entity retrieves or modifies the set of groups associated with those lookup services. @author Sun Microsystems, Inc.

    // This method's javadoc is inherited from an interface of this class
    public void setLookupGroups(String[] groups) throws NoSuchObjectException {
  concurrentObj.writeLock();
  try {
      ready.check();
      DiscoveryGroupManagement dgm = (DiscoveryGroupManagement) discoer;
      try {
    dgm.setGroups(groups);
      } catch (IOException e) {
    throw new RuntimeException(e.toString());
      }
      lookupGroups = dgm.getGroups();
      addLogRecord(new LookupGroupsChangedLogObj(lookupGroups));
      if (logger.isLoggable(Level.CONFIG)) {
    logger.log(
        Level.CONFIG,
        "set lookup groups {0}",

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  if (log != null) {
      log.snapshot();
  }


  try {
      DiscoveryGroupManagement dgm = (DiscoveryGroupManagement) discoer;
      String[] groups = dgm.getGroups();
      if (groups == null || groups.length > 0) {
    throw new ConfigurationException(
        "discoveryManager must be initially configured with " +
        "no groups");
      }
      DiscoveryLocatorManagement dlm =
    (DiscoveryLocatorManagement) discoer;
      if (dlm.getLocators().length > 0) {
    throw new ConfigurationException(
        "discoveryManager must be initially configured with " +
        "no locators");
      }
      dgm.setGroups(lookupGroups);
      dlm.setLocators(lookupLocators);
  } catch (ClassCastException e) {
      throw new ConfigurationException(null, e);
  }
  joiner = new JoinManager(proxy, lookupAttrs, myServiceID,

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                           "Getting DiscoveryManagement ", 
                           e);
                return(new String[0]);
            }
        }                    
        DiscoveryGroupManagement dgm = (DiscoveryGroupManagement)dm;
        return(dgm.getGroups());        
    }

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    public void addLookupGroups(String[] groups) {
        JoinManager mgr = service.getJoinManager();
        if(mgr!=null) {
            try {
                DiscoveryManagement dm = mgr.getDiscoveryManager();
                DiscoveryGroupManagement dgm = (DiscoveryGroupManagement)dm;
                dgm.addGroups(groups);                
                if(snapshotHandler!=null) {
                    try {
                        snapshotHandler.takeSnapshot();
                    } catch(IOException ioe) {
                        logger.warn("Persisting Added Lookup groups", ioe);
                    }
                }
                /* Update ServiceBeanConfig */
                setGroups(dgm.getGroups());
            } catch(IOException ioe) {
                logger.warn("Adding Lookup Groups", ioe);                
            }
        } else
            logger.warn("JoinManager is null");

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    public void removeLookupGroups(String[] groups) {
        JoinManager mgr = service.getJoinManager();
        if(mgr!=null) {
            try {
                DiscoveryManagement dm = mgr.getDiscoveryManager();
                DiscoveryGroupManagement dgm = (DiscoveryGroupManagement)dm;
                dgm.removeGroups(groups);
                if(snapshotHandler!=null) {
                    try {
                        snapshotHandler.takeSnapshot();
                    } catch(IOException ioe) {
                        logger.warn("Persisting removed Lookup groups", ioe);
                    }
                }
                /* Update ServiceBeanConfig */
                setGroups(dgm.getGroups());
            } catch(Exception e) {
                logger.warn("Removing Lookup groups", e);
            }
        } 
    }

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    public void setLookupGroups(String[] groups) {
        JoinManager mgr = service.getJoinManager();
        if(mgr!=null) {
            try {
                DiscoveryManagement dm = mgr.getDiscoveryManager();
                DiscoveryGroupManagement dgm = (DiscoveryGroupManagement)dm;
                dgm.setGroups(groups);
                if(snapshotHandler!=null) {
                    try {
                        snapshotHandler.takeSnapshot();
                    } catch(IOException ioe) {
                        logger.warn("Persisting Lookup groups", ioe);
                    }
                }
                /* Update ServiceBeanConfig */
                setGroups(dgm.getGroups());
            } catch(IOException ioe) {
                logger.warn("Setting Lookup groups", ioe);                
            }
        } 
    }

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                throw new IllegalArgumentException("DiscoveryManagement cannot be null");
            ObjectOutputStream oostream = new ObjectOutputStream(out);
            oostream.writeUTF(logDirName);
            oostream.writeObject(context);
            if(discoMgmt instanceof DiscoveryGroupManagement) {
                DiscoveryGroupManagement dgm = (DiscoveryGroupManagement)discoMgmt;
                String[] groups = dgm.getGroups();
                if(groups == null)
                    groups = new String[]{"all"};
                oostream.writeObject(groups);
            } else {
                oostream.writeObject(new String[0]);

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