Examples of org.jboss.cache.optimistic.WorkspaceNode

org.jboss.cache.optimistic.WorkspaceNode
Represents a type of {@link org.jboss.cache.Node} that is to be copied into a {@link TransactionWorkspace} for optimistically lockednodes. Adds versioning and dirty flags over conventional Nodes.
Typically used when the cache mode configured is {@link org.jboss.cache.config.Configuration.NodeLockingScheme#OPTIMISTIC} @author Manik Surtani (manik AT jboss DOT org) @author Steve Woodcock (stevew@jofti.com) @since 1.3.0 @deprecated will be removed along with optimistic and pessimistic locking.


   private Object getValueForKey(Object[] args, TransactionWorkspace workspace)
   {
      Fqn fqn = (Fqn) args[0];
      Object key = args[1];
      WorkspaceNode workspaceNode = getOrCreateWorkspaceNode(fqn, workspace, false);


      if (workspaceNode == null)
      {
         if (log.isDebugEnabled()) log.debug("unable to find node " + fqn + " in workspace.");
         return null;
      }
      else
      {
         //add this node into the wrokspace
         Object val = workspaceNode.get(key);
         workspace.addNode(workspaceNode);
         return val;
      }
   }

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   private Object getNode(Object[] args, TransactionWorkspace workspace)
   {
      Fqn fqn = (Fqn) args[0];


      WorkspaceNode workspaceNode = getOrCreateWorkspaceNode(fqn, workspace, false);


      if (workspaceNode == null)
      {
         if (log.isDebugEnabled()) log.debug("unable to find node " + fqn + " in workspace.");
         return null;
      }
      else
      {
         workspace.addNode(workspaceNode);
         return workspaceNode.getNode();
      }
   }

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   private Object getKeys(Object[] args, TransactionWorkspace workspace)
   {
      Fqn fqn = (Fqn) args[0];


      WorkspaceNode workspaceNode = getOrCreateWorkspaceNode(fqn, workspace, false);


      if (workspaceNode == null)
      {
         if (log.isDebugEnabled()) log.debug("unable to find node " + fqn + " in workspace.");
         return null;
      }
      else
      {
         Object keySet = workspaceNode.getKeys();
         workspace.addNode(workspaceNode);
         return keySet;
      }
   }

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   private Object getChildNames(Object[] args, TransactionWorkspace workspace)
   {
      Fqn fqn = (Fqn) args[0];


      WorkspaceNode workspaceNode = getOrCreateWorkspaceNode(fqn, workspace, false);


      if (workspaceNode == null)
      {
         if (log.isDebugEnabled()) log.debug("unable to find node " + fqn + " in workspace.");
         return null;
      }
      else
      {
         Object nameSet = workspaceNode.getChildrenNames();
         workspace.addNode(workspaceNode);
         return nameSet;
      }
   }

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   }


   private WorkspaceNode getOrCreateWorkspaceNode(Fqn fqn, TransactionWorkspace workspace, boolean undeleteIfNecessary)
   {
      if (log.isTraceEnabled()) log.trace("Attempting to get node " + fqn + " into the workspace");
      WorkspaceNode workspaceNode = workspace.getNode(fqn);
      // if we do not have the node then we need to add it to the workspace
      if (workspaceNode == null)
      {
         DataNode node = cache.peek(fqn);
         if (node == null)
         {
            return null; // seems to happen quite a bit
         }
         workspaceNode = NodeFactory.getInstance().createWorkspaceNode(node, workspace);
         workspace.addNode(workspaceNode);
      }
      // the node has been deleted dude!
      if (workspaceNode.isDeleted())
      {
         if (log.isDebugEnabled()) log.debug("Node " + fqn + " has been deleted in the workspace.");
         if (undeleteIfNecessary)
         {
            workspaceNode.markAsDeleted(false);
            // re-add to parent
            WorkspaceNode parent = getOrCreateWorkspaceNode(fqn.getParent(), workspace, true);
            parent.addChild(workspaceNode);
         }
         else
         {
            workspaceNode = null;
         }

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Related Classes of org.jboss.cache.optimistic.WorkspaceNode

org.jboss.cache.interceptors.InvalidationInterceptor

org.jboss.cache.interceptors.OptimisticCreateIfNotExistsInterceptor

org.jboss.cache.interceptors.OptimisticInterceptor

org.jboss.cache.interceptors.OptimisticLockingInterceptor

org.jboss.cache.interceptors.OptimisticNodeInterceptor

org.jboss.cache.interceptors.OptimisticReplicationInterceptor

org.jboss.cache.interceptors.OptimisticReplicationInterceptor$DataVersionPopulator

org.jboss.cache.interceptors.OptimisticValidatorInterceptor

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