Examples of org.jboss.cache.InternalNode

org.jboss.cache.InternalNode
An internal node interface, that represents nodes that directly form the tree structure in the cache. This is as opposed to {@link Node} and its {@link NodeSPI} sub-interface, which are typically implemented by delegates which then delegate callsto internal nodes, potentially after passing the call up an interceptor chain.
All calls on an InternalNode are executed directly on the data structure. Usually, XXXDirect() calls on {@link NodeSPI}delegate to calls on an InternalNode, for example, {@link NodeSPI#putDirect(Object,Object)} delegating to {@link #put(Object,Object)}.
@author Manik Surtani (manik AT jboss DOT org) @since 3.0


   // TODO: What is this rubbish?!??
   private void integrateRetainedNode(Fqn ancFqn, Fqn descFqn)
   {
      prepareContextOptions();
      InternalNode ancestor = cache.getNode(ancFqn).getDelegationTarget();
      Object name = descFqn.get(ancFqn.size());
      InternalNode child = ancestor.getChild(name);
      if (ancFqn.size() == descFqn.size() + 1)
      {
         if (child == null)
         {
            prepareContextOptions();
            InternalNode descendant = cache.getNode(descFqn).getDelegationTarget();
            prepareContextOptions();
            ancestor.addChild(name, descendant);
         }
         else
         {

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      if (fqn != null)
      {
         boolean remove = false;
         if (!checkIfLoaded || wasLoadedIntoMemory(ctx, fqn))
         {
            InternalNode n;
            if (((n = findNode(ctx, fqn)) != null) && n.isDataLoaded() && loader.exists(fqn))
            {
               // node not null and attributes have been loaded?
               if (n.hasChildren())
               {
                  boolean result = childrenLoaded(n);
                  if (result)
                  {
                     log.debug("children all initialized");

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   /**
    * @return a Set of child node names that hang directly off the backup tree root, or null if the backup tree root doesn't exist.
    */
   protected Set<Object> getBackupRoots()
   {
      InternalNode backupSubtree = dataContainer.peekInternalNode(BuddyManager.BUDDY_BACKUP_SUBTREE_FQN, false);
      if (backupSubtree == null) return null;
      return backupSubtree.getChildrenNames();
   }

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      if (trace) log.trace("Can provide state? " + canProvideState);
      if (canProvideState && (fetchPersistentState || fetchTransientState))
      {
         marshaller.objectToObjectStream(true, out);
         long startTime = System.currentTimeMillis();
         InternalNode subtreeRoot = fqn.isRoot() ? cache.getRoot().getDelegationTarget() : cache.getNode(fqn).getDelegationTarget();


         // we don't need READ locks for MVCC based state transfer!
         if (log.isDebugEnabled())
            log.debug("Generating in-memory (transient) state for subtree " + fqn);

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   // TODO: What is this rubbish?!??
   private void integrateRetainedNode(Fqn ancFqn, Fqn descFqn) {
      prepareContextOptions();
      InternalNode ancestor = cache.getNode(ancFqn).getDelegationTarget();
      Object name = descFqn.get(ancFqn.size());
      InternalNode child = ancestor.getChild(name);
      if (ancFqn.size() == descFqn.size() + 1) {
         if (child == null) {
            prepareContextOptions();
            InternalNode descendant = cache.getNode(descFqn).getDelegationTarget();
            prepareContextOptions();
            ancestor.addChild(name, descendant);
         } else {
            log.warn("Received unexpected internal node " + descFqn + " in transferred state");
         }

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            return false;
         }
         else
         {
            if (trace) log.trace("removing NODE as it is a leaf: evict(" + fqn + ")");
            InternalNode parentNode = lookupInAllScopes(ctx, fqn.getParent());


            if (parentNode != null)
            {
               parentNode.removeChild(fqn.getLastElement());
               parentNode.setChildrenLoaded(false);
            }
            node.setValid(false, false);
            node.markAsDeleted(true);
            node.setDataLoaded(false);
            node.getDelegationTarget().clear();

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            wrapNodeForWriting(context, fqn.getParent(), true, true, includeInvalidNodes, false, force);
         }
      } else {
         // else, fetch from dataContainer.
         InternalNode[] nodes = dataContainer.peekInternalNodeAndDirectParent(fqn, includeInvalidNodes);
         InternalNode in = nodes[0];
         if (in != null) {
            // exists in cache!  Just acquire lock if needed, and wrap.
            // do we need a lock?
            boolean needToCopy = false;
            if (lockForWriting && acquireLock(context, fqn)) {

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    * @param ctx    invocation context
    * @return true if parent lock is needed, false otherwise.
    */
   private boolean isParentLockNeeded(Fqn parent, InvocationContext ctx) {
      ReadCommittedNode parentNodeTmp = (ReadCommittedNode) ctx.lookUpNode(parent);
      InternalNode in = parentNodeTmp == null ? dataContainer.peekInternalNode(parent, true) : parentNodeTmp.getDelegationTarget();
      return isParentLockNeeded(in);
   }

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Related Classes of org.jboss.cache.InternalNode

org.jboss.cache.commands.read.GravitateDataCommand

org.jboss.cache.commands.write.EvictCommand

org.jboss.cache.interceptors.ActivationInterceptor

org.jboss.cache.interceptors.ActivationInterceptor$ActivationModificationsBuilder

org.jboss.cache.mvcc.MVCCNodeHelper

org.jboss.cache.mvcc.ReadCommittedNode

org.jboss.cache.mvcc.RepeatableReadNode

org.jboss.cache.statetransfer.DefaultStateTransferIntegrator

org.jboss.cache.statetransfer.DefaultStateTransferManager

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