コード例 #1
0
ファイル: QueryResults.java プロジェクト: TSurendhar/teiid
  /**
   * Convert a list of SingleElementSymbols to a List of ColumnInfo objects.
   *
   * @param symbols List of SingleElementSymbols
   * @return List of ColumnInfos
   */
  public static List createColumnInfos(List symbols) {
    List infos = new ArrayList(symbols.size());
    Iterator iter = symbols.iterator();
    while (iter.hasNext()) {
      Expression symbol = (Expression) iter.next();
      String name = Symbol.getName(symbol);
      if (symbol instanceof AliasSymbol) {
        AliasSymbol alias = (AliasSymbol) symbol;
        symbol = alias.getSymbol();
      }
      if (symbol instanceof ElementSymbol) {
        ElementSymbol element = (ElementSymbol) symbol;
        GroupSymbol group = element.getGroupSymbol();
        Object groupID = null;
        if (group != null) {
          groupID = group.getMetadataID();
        }
        infos.add(
            new ColumnInfo(
                name,
                DataTypeManager.getDataTypeName(element.getType()),
                element.getType(),
                groupID,
                element.getMetadataID()));
      } else { // ExpressionSymbol or AggregateSymbol
        // Expressions don't map to a single element or group, so don't save that info
        infos.add(
            new ColumnInfo(
                name, DataTypeManager.getDataTypeName(symbol.getType()), symbol.getType()));
      }
    }

    return infos;
  }
コード例 #2
0
ファイル: LoopInstruction.java プロジェクト: TSurendhar/teiid
 public void process(ProcedurePlan procEnv) throws TeiidComponentException {
   List<?> currentRow = procEnv.getCurrentRow(rsName);
   VariableContext varContext = procEnv.getCurrentVariableContext();
   // set results to the variable context(the cursor.element is treated as variable)
   if (this.elements == null) {
     List schema = procEnv.getSchema(rsName);
     elements = new ArrayList<ElementSymbol>(schema.size());
     for (int i = 0; i < schema.size(); i++) {
       Expression element = (Expression) schema.get(i);
       ElementSymbol e =
           new ElementSymbol(rsName + Symbol.SEPARATOR + Symbol.getShortName(element));
       e.setType(element.getType());
       elements.add(e);
     }
   }
   for (int i = 0; i < elements.size(); i++) {
     varContext.setValue(elements.get(i), currentRow.get(i));
   }
 }
コード例 #3
0
  private void validate(
      VDBMetaData vdb,
      ModelMetaData model,
      AbstractMetadataRecord record,
      ValidatorReport report,
      IQueryMetadataInterface metadata,
      MetadataFactory mf) {
    ValidatorReport resolverReport = null;
    try {
      if (record instanceof Procedure) {
        Procedure p = (Procedure) record;
        Command command = queryParser.parseProcedure(p.getQueryPlan(), false);
        GroupSymbol gs = createASTNode(ASTNodes.GROUP_SYMBOL);
        gs.setName(p.getFullName());
        QueryResolver resolver = new QueryResolver(queryParser);
        resolver.resolveCommand(command, gs, ICommand.TYPE_STORED_PROCEDURE, metadata, false);
        Validator validator = new Validator();
        resolverReport = validator.validate(command, metadata);
        determineDependencies(p, command);
      } else if (record instanceof Table) {
        Table t = (Table) record;

        GroupSymbol symbol = createASTNode(ASTNodes.GROUP_SYMBOL);
        symbol.setName(t.getFullName());
        ResolverUtil.resolveGroup(symbol, metadata);
        String selectTransformation = t.getSelectTransformation();

        boolean columnsIsEmpty = t.getColumns() == null || t.getColumns().isEmpty();

        // Consider columns if teid 8.11 or lower
        boolean considerColumns_811 =
            isTeiidOrGreater(Version.TEIID_8_12_4) ? true : columnsIsEmpty;
        // Consider columns if teiid 8.12.4+
        boolean considerColumns_8124 =
            isTeiidOrGreater(Version.TEIID_8_12_4) ? columnsIsEmpty : true;

        if (t.isVirtual() && considerColumns_811) {
          QueryCommand command = (QueryCommand) queryParser.parseCommand(selectTransformation);
          QueryResolver resolver = new QueryResolver(queryParser);
          resolver.resolveCommand(command, metadata);
          Validator validator = new Validator();
          resolverReport = validator.validate(command, metadata);

          if (!resolverReport.hasItems() && considerColumns_8124) {
            List<Expression> symbols = command.getProjectedSymbols();
            for (Expression column : symbols) {
              try {
                addColumn(Symbol.getShortName(column), column.getType(), t, mf);
              } catch (Exception e) {
                log(report, model, e.getMessage());
              }
            }
          }

          if (considerColumns_8124) {
            determineDependencies(t, command);
            if (t.getInsertPlan() != null && t.isInsertPlanEnabled()) {
              validateUpdatePlan(
                  model, report, metadata, t, t.getInsertPlan(), Command.TYPE_INSERT);
            }
            if (t.getUpdatePlan() != null && t.isUpdatePlanEnabled()) {
              validateUpdatePlan(
                  model, report, metadata, t, t.getUpdatePlan(), Command.TYPE_UPDATE);
            }
            if (t.getDeletePlan() != null && t.isDeletePlanEnabled()) {
              validateUpdatePlan(
                  model, report, metadata, t, t.getDeletePlan(), Command.TYPE_DELETE);
            }
          }
        }

        boolean addCacheHint = false;
        if (t.isMaterialized() && t.getMaterializedTable() == null) {
          List<KeyRecord> fbis = t.getFunctionBasedIndexes();
          List<GroupSymbol> groups = Arrays.asList(symbol);
          if (fbis != null && !fbis.isEmpty()) {
            for (KeyRecord fbi : fbis) {
              for (int j = 0; j < fbi.getColumns().size(); j++) {
                Column c = fbi.getColumns().get(j);
                if (c.getParent() != fbi) {
                  continue;
                }
                String exprString = c.getNameInSource();
                try {
                  Expression ex = queryParser.parseExpression(exprString);
                  ResolverVisitor resolverVisitor = new ResolverVisitor(teiidVersion);
                  resolverVisitor.resolveLanguageObject(ex, groups, metadata);
                  if (!ValueIteratorProviderCollectorVisitor.getValueIteratorProviders(ex)
                      .isEmpty()) {
                    log(
                        report,
                        model,
                        Messages.gs(Messages.TEIID.TEIID31114, exprString, fbi.getFullName()));
                  }
                  EvaluatableVisitor ev = new EvaluatableVisitor(teiidVersion);
                  PreOrPostOrderNavigator.doVisit(ex, ev, PostOrderNavigator.PRE_ORDER);
                  if (ev.getDeterminismLevel().compareTo(Determinism.VDB_DETERMINISTIC) < 0) {
                    log(
                        report,
                        model,
                        Messages.gs(Messages.TEIID.TEIID31115, exprString, fbi.getFullName()));
                  }
                } catch (QueryResolverException e) {
                  log(
                      report,
                      model,
                      Messages.gs(
                          Messages.TEIID.TEIID31116,
                          exprString,
                          fbi.getFullName(),
                          e.getMessage()));
                }
              }
            }
          }
        } else {
          addCacheHint = true;
        }

        // this seems to parse, resolve and validate.
        QueryResolver resolver = new QueryResolver(queryParser);
        QueryNode node =
            resolver.resolveView(
                symbol,
                new QueryNode(t.getSelectTransformation()),
                SQLConstants.Reserved.SELECT,
                metadata);
        CacheHint cacheHint = node.getCommand().getCacheHint();
        Long ttl = -1L;
        if (cacheHint != null
            && cacheHint.getTtl() != null
            && addCacheHint
            && t.getProperty(MATVIEW_TTL, false) == null) {
          ttl = cacheHint.getTtl();
          t.setProperty(MATVIEW_TTL, String.valueOf(ttl));
        }
      }
      if (resolverReport != null && resolverReport.hasItems()) {
        for (ValidatorFailure v : resolverReport.getItems()) {
          log(
              report,
              model,
              v.getStatus() == IValidatorFailure.VFStatus.ERROR ? Severity.ERROR : Severity.WARNING,
              v.getMessage());
        }
      }
      processReport(model, record, report, resolverReport);
    } catch (Exception e) {
      log(
          report,
          model,
          Messages.gs(Messages.TEIID.TEIID31080, record.getFullName(), e.getMessage()));
    }
  }