Package org.teiid.query.processor.relational

Examples of org.teiid.query.processor.relational.AccessNode

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              return;
            }
          } else if (depdenent) {
            return;
          }
            AccessNode accessNode = (AccessNode)node;
            Command depCommand = accessNode.getCommand();
            Collection<GroupSymbol> groupSymbols = GroupCollectorVisitor.getGroups(depCommand, true);
            for (GroupSymbol groupSymbol : groupSymbols) {
            depGroups.add(groupSymbol.getName().toUpperCase());
            }
        }
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        return stringQueries;
    }
   
    private static void getAtomicCommands(RelationalNode node, Set<Command> atomicQueries) {
        if(node instanceof AccessNode) {
            AccessNode accessNode = (AccessNode) node;
            atomicQueries.add( accessNode.getCommand());  
        }
       
        // Recurse through children
        RelationalNode[] children = node.getChildren();
        for(int i=0; i<children.length; i++) {
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        }
       
        for(String sourceName:model.getSourceNames()) {
           
            // Create a new cloned version of the access node and set it's model name to be the bindingUUID
            AccessNode instanceNode = (AccessNode) accessNode.clone();
            instanceNode.setID(getID());
            instanceNode.setConnectorBindingId(sourceName);
           
            // Modify the command to pull the instance column and evaluate the criteria
            Command command = (Command)instanceNode.getCommand().clone();
           
            command = rewriteCommand(sourceName, command);
           
            if (command == null) {
              continue;
            }

            // Rewrite the command now that criteria may have been simplified
            try {
                command = QueryRewriter.rewrite(command, metadata, null);                   
                instanceNode.setCommand(command);
            } catch(QueryValidatorException e) {
                // ignore and use original command
            }
           
            if (!RelationalNodeUtil.shouldExecute(command, false)) {
                continue;
            }
                               
            accessNodes.add(instanceNode);
        }
       
        if (hasOutParams && accessNodes.size() != 1) {
          throw new QueryPlannerException(QueryPlugin.Util.getString("MultiSource.out_procedure", accessNode.getCommand())); //$NON-NLS-1$
        }

        switch(accessNodes.size()) {
            case 0:
            {
                if (RelationalNodeUtil.isUpdate(accessNode.getCommand())) {
                  //should return a 0 update count
                  ProjectNode pnode = new ProjectNode(getID());
                  pnode.setElements(accessNode.getElements());
                  pnode.setSelectSymbols(Arrays.asList(new ExpressionSymbol("x", new Constant(0)))); //$NON-NLS-1$
                  return pnode;
                }
                // Replace existing access node with a NullNode
                NullNode nullNode = new NullNode(getID());
                nullNode.setElements(accessNode.getElements());
                return nullNode;        
            }
            case 1:
            {
                // Replace existing access node with new access node (simplified command)
                AccessNode newNode = accessNodes.get(0);
                return newNode;                                               
            }
            default:
            {
              multiSource = true;
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                    peNode.setProcessorPlan(plan);
                    processNode = peNode;

                } else {
                    AccessNode aNode = null;
                    Command command = (Command) node.getProperty(NodeConstants.Info.ATOMIC_REQUEST);
                    Object modelID = node.getProperty(NodeConstants.Info.MODEL_ID);
                   
                    if(node.hasBooleanProperty(NodeConstants.Info.IS_DEPENDENT_SET)) {
                        if (command instanceof StoredProcedure) {
                            List references = (List)node.getProperty(NodeConstants.Info.PROCEDURE_INPUTS);
                            List defaults = (List)node.getProperty(NodeConstants.Info.PROCEDURE_DEFAULTS);
                            Criteria crit = (Criteria)node.getProperty(NodeConstants.Info.PROCEDURE_CRITERIA);
                           
                            DependentProcedureAccessNode depAccessNode = new DependentProcedureAccessNode(getID(), crit, references, defaults);
                            processNode = depAccessNode;
                            aNode = depAccessNode;
                        } else {
                            //create dependent access node
                            DependentAccessNode depAccessNode = new DependentAccessNode(getID());
                           
                            if(modelID != null){
                                depAccessNode.setMaxSetSize(CapabilitiesUtil.getMaxInCriteriaSize(modelID, metadata, capFinder));
                                depAccessNode.setMaxPredicates(CapabilitiesUtil.getMaxDependentPredicates(modelID, metadata, capFinder));  
                            }
                            processNode = depAccessNode;
                            aNode = depAccessNode;
                        }
                        aNode.setShouldEvaluateExpressions(true);
                    } else {
                       
                        // create access node
                        aNode = new AccessNode(getID());
                        processNode = aNode;
                                               
                        //-- special handling for temp tables. currently they cannot perform projection
                        try {
                            if (command instanceof Query) {
                                processNode = correctProjectionInternalTables(node, aNode);
                            }
                        } catch (QueryMetadataException err) {
                            throw new TeiidComponentException(err);
                        }
                        aNode.setShouldEvaluateExpressions(EvaluatableVisitor.needsProcessingEvaluation(command));
                    }
                   
                    if (command instanceof QueryCommand) {
                      try {
                          command = (Command)command.clone();
                          boolean aliasGroups = modelID != null && CapabilitiesUtil.supportsGroupAliases(modelID, metadata, capFinder);
                          boolean aliasColumns = modelID != null && CapabilitiesUtil.supports(Capability.QUERY_SELECT_EXPRESSION, modelID, metadata, capFinder);
                          command.acceptVisitor(new AliasGenerator(aliasGroups, !aliasColumns));
                      } catch (QueryMetadataException err) {
                          throw new TeiidComponentException(err);
                      }
                    }
                    aNode.setCommand(command);
                    aNode.setModelName(getRoutingName(node));
                }
                break;

      case NodeConstants.Types.SELECT:
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    boolean supportPreparedBatchUpdate = false;
    Command command = null;
    if (this.processPlan instanceof RelationalPlan) {
      RelationalPlan rPlan = (RelationalPlan)this.processPlan;
      if (rPlan.getRootNode() instanceof AccessNode) {
        AccessNode aNode = (AccessNode)rPlan.getRootNode();
        String modelName = aNode.getModelName();
        command = aNode.getCommand();
            SourceCapabilities caps = capabilitiesFinder.findCapabilities(modelName);
            supportPreparedBatchUpdate = caps.supportsCapability(SourceCapabilities.Capability.BULK_UPDATE);
      }
    }
    List<Command> commands = new LinkedList<Command>();
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Related Classes of org.teiid.query.processor.relational.AccessNode

  • org.teiid.client.plan.PlanNode
  • org.teiid.common.buffer.TupleSource
  • org.teiid.dqp.internal.process.multisource.MultiSourcePlanToProcessConverter
  • org.teiid.dqp.internal.process.PreparedStatementRequest
  • org.teiid.query.optimizer.relational.PlanToProcessConverter
  • org.teiid.query.optimizer.TestDependentJoins
  • org.teiid.query.optimizer.TestOptimizer
  • org.teiid.query.sql.lang.Command
  • org.teiid.core.TeiidProcessingException
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