Examples of org.jboss.cache.optimistic.TransactionWorkspace

org.jboss.cache.optimistic.TransactionWorkspace
Used to contain a copy of the tree being worked on within the scope of a given transaction. Maintains {@link WorkspaceNode}s rather than conventional
Also see {@link org.jboss.cache.transaction.OptimisticTransactionContext}, which creates and maintains an instance of TransactionWorkspace for each transaction running. @author Manik Surtani (manik AT jboss DOT org) @author Steve Woodcock (stevew@jofti.com) @deprecated will be removed along with optimistic and pessimistic locking.

   }


   @Override
   public Object visitPutDataMapCommand(InvocationContext ctx, PutDataMapCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, true, true);
      if (workspaceNode != null)
      {
         setVersioning(ctx, workspace, workspaceNode);
      }

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   @Override
   public Object visitMoveCommand(InvocationContext ctx, MoveCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, true, true);
      if (ctx.isOriginLocal() && ctx.getOptionOverrides() != null && ctx.getOptionOverrides().getDataVersion() != null)
      {
         throw new CacheException("Setting a data version while performing a move() is not supported!!");
      }

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   }


   @Override
   public Object visitRemoveKeyCommand(InvocationContext ctx, RemoveKeyCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, true, true);


      if (workspaceNode != null)
      {
         setVersioning(ctx, workspace, workspaceNode);

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   }


   @Override
   public Object visitClearDataCommand(InvocationContext ctx, ClearDataCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, true, true);
      if (workspaceNode != null)
      {
         setVersioning(ctx, workspace, workspaceNode);
      }

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   }


   @Override
   public Object visitGetKeyValueCommand(InvocationContext ctx, GetKeyValueCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      Object result;
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, false, false);


      if (workspaceNode == null)
      {
         if (trace) log.debug("Unable to find node " + command.getFqn() + " in workspace.");
         result = null;
      }
      else
      {
         //add this node into the wrokspace
         notifier.notifyNodeVisited(command.getFqn(), true, ctx);
         Object val = workspaceNode.get(command.getKey());
         workspace.addNode(workspaceNode);
         notifier.notifyNodeVisited(command.getFqn(), false, ctx);
         result = val;
      }
      return result;
   }

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   }


   @Override
   public Object visitGetKeysCommand(InvocationContext ctx, GetKeysCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      Object result;
      Fqn fqn = command.getFqn();
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, fqn, workspace, false, false);
      if (workspaceNode == null)
      {
         if (trace) log.trace("unable to find node " + fqn + " in workspace.");
         result = null;
      }
      else
      {
         notifier.notifyNodeVisited(fqn, true, ctx);
         Object keySet = workspaceNode.getKeys();
         workspace.addNode(workspaceNode);
         notifier.notifyNodeVisited(fqn, false, ctx);
         result = keySet;
      }
      return result;
   }

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   }


   @Override
   public Object visitGetDataMapCommand(InvocationContext ctx, GetDataMapCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      Object result;
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, false, false);
      if (workspaceNode == null)
      {
         if (trace) log.trace("unable to find node " + command.getFqn() + " in workspace.");
         result = null;
      }
      else
      {
         notifier.notifyNodeVisited(command.getFqn(), true, ctx);
         Object data = workspaceNode.getData();
         workspace.addNode(workspaceNode);
         notifier.notifyNodeVisited(command.getFqn(), false, ctx);
         result = data;
      }
      return result;
   }

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   }


   @Override
   public Object visitGetChildrenNamesCommand(InvocationContext ctx, GetChildrenNamesCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      Object result;
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, false, false);
      if (workspaceNode == null)
      {
         if (trace) log.trace("Unable to find node " + command.getFqn() + " in workspace.");
         result = null;
      }
      else
      {
         notifier.notifyNodeVisited(command.getFqn(), true, ctx);
         Object nameSet = workspaceNode.getChildrenNames();
         workspace.addNode(workspaceNode);
         notifier.notifyNodeVisited(command.getFqn(), false, ctx);
         result = nameSet;
      }
      return result;
   }

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   }


   @Override
   public Object visitGetNodeCommand(InvocationContext ctx, GetNodeCommand command) throws Throwable
   {
      TransactionWorkspace workspace = getTransactionWorkspace(ctx);
      Object result;
      WorkspaceNode workspaceNode = fetchWorkspaceNode(ctx, command.getFqn(), workspace, false, false);
      if (workspaceNode == null)
      {
         if (trace) log.trace("Unable to find node " + command.getFqn() + " in workspace.");
         result = null;
      }
      else if (workspaceNode.isDeleted())
      {
         if (trace) log.trace("Attempted to retrieve node " + command.getFqn() + " but it has been deleted!");
         result = null;
      }
      else
      {
         notifier.notifyNodeVisited(command.getFqn(), true, ctx);
         workspace.addNode(workspaceNode);
         notifier.notifyNodeVisited(command.getFqn(), false, ctx);
         result = workspaceNode.getNode();
      }
      return result;
   }

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         }
         else
         {
            try
            {
               TransactionWorkspace workspace = configuration.isNodeLockingOptimistic() ? getWorkspace(ctx) : null;
               for (Fqn fqn : filterVisitor.result) invalidateAcrossCluster(fqn, workspace, defaultSynchronous, ctx);
            }
            catch (Throwable t)
            {
               log.warn("Unable to broadcast evicts as a part of the prepare phase.  Rolling back.", t);

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