Examples of org.jboss.cache.Node

org.jboss.cache.Node
A Node is a {@link Fqn named} logical grouping of data in the JBoss {@link Cache}. A node should be used to contain data for a single data record, for example information about a particular person or account.
One purpose of grouping cache data into separate nodes is to minimize transaction locking interference, and increase concurrency. So for example, when multiple threads or possibly distributed caches are acccessing different accounts simultaneously.
Another is that when making changes to this node, its data might be kept in a single database row or file on disk. (Persisted via the use of a {@link org.jboss.cache.loader.CacheLoader}.)
A node has references to its children, parent (each node except the root - defined by {@link Fqn#ROOT} - hasa single parent) and data contained within the node (as key/value pairs). The data access methods are similar to the collections {@link Map} interface,but some are read-only or return copies of the underlying the data.
@author Manik Surtani (manik AT jboss DOT org) @see Cache @since 2.0.0

    // System.out.println(root.getFqn());
    fqnList.add(root.getFqn().toString());


    Iterator<Node> iterator = root.getChildren().iterator();
    while (iterator.hasNext()) {
      Node node = iterator.next();
      initFQNList(node);
    }
  }

View Full Code Here

   @Override
   public Object get(String region, String key)
   {
      try
      {
         Node node = cache.get(getFqn(region));
         if (node != null)
         {
            return node.get(key);
         }
         else
         {
            return null;
         }

View Full Code Here

  }


  public void testOnFlushCache() throws Exception {
    setUpTreeCache();
    cacheFacade.onFlushCache(flushingModel);
    Node cacheNode = treeCache.get(NODE_FQN);
    assertNull(cacheNode);
  }

View Full Code Here

            // The rest only matters for optimistic locking, where we
            // need to establish the proper data version on the region root
            
            // Don't hold a transactional lock for this 
            Transaction tx = suspend();
            Node newRoot = null;
            try {
                 // Make sure the root node for the region exists and 
                 // has a DataVersion that never complains
                 newRoot = jbcCache.getRoot().getChild( regionFqn );
                 if (newRoot == null || !newRoot.isValid()) {                
                     // Establish the region root node with a non-locking data version
                     DataVersion version = optimistic ? NonLockingDataVersion.INSTANCE : null;
                     newRoot = CacheHelper.addNode(jbcCache, regionFqn, true, true, version);    
                 }
                 else if (newRoot instanceof NodeSPI) {
                     // FIXME Hacky workaround to JBCACHE-1202
                     if ( !( ( ( NodeSPI ) newRoot ).getVersion() instanceof NonLockingDataVersion ) ) {
                          ((NodeSPI) newRoot).setVersion(NonLockingDataVersion.INSTANCE);
                     }
                 }
                 // Never evict this node
                 newRoot.setResident(true);
                 establishInternalNodes();
            }
            finally {
                resume(tx);
                regionRoot = newRoot;

View Full Code Here

    public static boolean isSynchronous(Configuration.CacheMode cacheMode) {
        return cacheMode == Configuration.CacheMode.REPL_SYNC || cacheMode == Configuration.CacheMode.INVALIDATION_SYNC;
    }
    
    public static Set getChildrenNames(Cache cache, Fqn fqn) {
        Node node = cache.getRoot().getChild(fqn);
        return (node != null) ? node.getChildrenNames() : Collections.emptySet();
    }

View Full Code Here

                option = new Option();
                option.setCacheModeLocal(localOnly);
                option.setDataVersion(version);
            }
            
            Node root = cache.getRoot();
            setInvocationOption(cache, option);
            // FIXME hack to work around fact that calling
            // Node added = root.addChild( fqn ); doesn't 
            // properly set the version on the node
            Node added = null;
            if (version == null) {
                added = root.addChild( fqn );
            }
            else {
                cache.put(fqn, DUMMY, DUMMY);
                added = root.getChild(fqn);
            }
            if (resident)
                added.setResident(true);
            return added;
        }
        catch (Exception e) {
            throw new CacheException(e);
        }

View Full Code Here


   public Collection<String> getAllCategories()
   {
      try
      {
         @SuppressWarnings("unchecked")
         Node base = this.cache.getRoot().getChild(ROOTFQN);
         @SuppressWarnings("unchecked")
         Collection<String> keys = (base == null ? null : base.getChildrenNames());
         if (keys != null && keys.size() > 0)
         {
            keys = Collections.unmodifiableCollection(keys);
         }
         return keys;

View Full Code Here

      for (Fqn internalFqn : internalFqns)
      {
         if (internalFqn.isChildOf(target))
         {
            prepareContextOptions();
            Node node = getInternalNode(cache.getNode(target), internalFqn);
            if (node != null)
            {
               result.add(node.getFqn());
            }
         }
      }


      return result;

View Full Code Here

   private Node getInternalNode(Node parentNode, Fqn internalFqn)
   {
      Fqn parentFqn = parentNode.getFqn();
      Object name = internalFqn.get(parentFqn.size());
      prepareContextOptions();
      Node result = parentNode.getChild(name);
      if (result != null && internalFqn.size() < result.getFqn().size())
      {
         // need to recursively walk down the tree
         result = getInternalNode(result, internalFqn);
      }

View Full Code Here

   }
   
   private Set<String> getSSOIds() throws Exception
   {
      Fqn<String> ssoRootFqn = Fqn.fromElements(SSO);
      @SuppressWarnings("unchecked")
      Node ssoRoot = cache.getRoot().getChild(ssoRootFqn);
      @SuppressWarnings("unchecked")
      Set<String> result = ssoRoot == null ? new HashSet<String>() : ssoRoot.getChildrenNames();
      return result;
   }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.jboss.cache.Node

com.kylin.jbosscache.api.CacheAPITest

com.kylin.jbosscache.api.NodeNameTest

com.kylin.jbosscache.custom.service.JBossCacheSession

com.kylin.jbosscache.demo.JBossCacheConsole

EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap

jboss.test.TestCacheBean

org.hibernate.cache.jbc.BasicRegionAdapter

org.hibernate.cache.jbc.util.CacheHelper

org.hibernate.cache.jbc2.BasicRegionAdapter

org.hibernate.cache.jbc2.util.CacheHelper

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.