Examples with DynamicCommand org.teiid.query.sql.lang.DynamicCommand used on opensource projects

Example 6 with DynamicCommand

use of org.teiid.query.sql.lang.DynamicCommand in project teiid by teiid.

the class ExecDynamicSqlInstruction method process.

/**
 * <p>
 * Processing this instruction executes the ProcessorPlan for the command on
 * the CommandStatement of the update procedure language. Executing this
 * plan does not effect the values of any of the variables defined as part
 * of the update procedure and hence the results of the ProcessPlan
 * execution need not be stored for further processing. The results are
 * removed from the buffer manager immediately after execution. The program
 * counter is incremented after execution of the plan.
 * </p>
 *
 * @throws BlockedException
 *             if this processing the plan throws a currentVarContext
 */
public void process(ProcedurePlan procEnv) throws BlockedException, TeiidComponentException, TeiidProcessingException {
    VariableContext localContext = procEnv.getCurrentVariableContext();
    String query = null;
    try {
        Clob value = (Clob) procEnv.evaluateExpression(dynamicCommand.getSql());
        if (value == null) {
            throw new QueryProcessingException(QueryPlugin.Util.getString(// $NON-NLS-1$
            "ExecDynamicSqlInstruction.0"));
        }
        if (value.length() > MAX_SQL_LENGTH) {
            throw new QueryProcessingException(QueryPlugin.Util.gs(QueryPlugin.Event.TEIID31204, MAX_SQL_LENGTH));
        }
        query = value.getSubString(1, MAX_SQL_LENGTH);
        LogManager.logTrace(org.teiid.logging.LogConstants.CTX_DQP, // $NON-NLS-1$
        new Object[] { "Executing dynamic sql ", query });
        Command command = QueryParser.getQueryParser().parseCommand(query);
        // special handling for dynamic anon blocks
        if (command instanceof CreateProcedureCommand) {
            if (dynamicCommand.getIntoGroup() != null || returnable) {
                // and the creation of an inline view
                throw new QueryProcessingException(QueryPlugin.Event.TEIID31250, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID31250));
            }
            ((CreateProcedureCommand) command).setResultSetColumns(Collections.EMPTY_LIST);
        }
        command.setExternalGroupContexts(dynamicCommand.getExternalGroupContexts());
        command.setTemporaryMetadata(dynamicCommand.getTemporaryMetadata().clone());
        updateContextWithUsingValues(procEnv, localContext);
        TempMetadataStore metadataStore = command.getTemporaryMetadata();
        if (dynamicCommand.getUsing() != null && !dynamicCommand.getUsing().isEmpty()) {
            metadataStore.addTempGroup(Reserved.USING, new LinkedList<ElementSymbol>(dynamicCommand.getUsing().getClauseMap().keySet()));
            GroupSymbol using = new GroupSymbol(Reserved.USING);
            using.setMetadataID(metadataStore.getTempGroupID(Reserved.USING));
            command.addExternalGroupToContext(using);
            metadataStore.addTempGroup(ProcedureReservedWords.DVARS, new LinkedList<ElementSymbol>(dynamicCommand.getUsing().getClauseMap().keySet()));
            using = new GroupSymbol(ProcedureReservedWords.DVARS);
            using.setMetadataID(metadataStore.getTempGroupID(ProcedureReservedWords.DVARS));
            command.addExternalGroupToContext(using);
        }
        QueryResolver.resolveCommand(command, metadata.getDesignTimeMetadata());
        validateDynamicCommand(procEnv, command, value.toString());
        // create a new set of variables including vars
        Map<ElementSymbol, Expression> nameValueMap = createVariableValuesMap(localContext);
        ValidationVisitor visitor = new ValidationVisitor();
        Request.validateWithVisitor(visitor, metadata, command);
        boolean insertInto = false;
        boolean updateCommand = false;
        if (!command.returnsResultSet() && !(command instanceof StoredProcedure)) {
            if (dynamicCommand.isAsClauseSet()) {
                if (dynamicCommand.getProjectedSymbols().size() != 1 || ((Expression) dynamicCommand.getProjectedSymbols().get(0)).getType() != DataTypeManager.DefaultDataClasses.INTEGER) {
                    throw new QueryProcessingException(QueryPlugin.Event.TEIID31157, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID31157));
                }
            }
            updateCommand = true;
        } else if (dynamicCommand.getAsColumns() != null && !dynamicCommand.getAsColumns().isEmpty()) {
            // $NON-NLS-1$
            command = QueryRewriter.createInlineViewQuery(new GroupSymbol("X"), command, metadata, dynamicCommand.getAsColumns());
            if (dynamicCommand.getIntoGroup() != null) {
                Insert insert = new Insert(dynamicCommand.getIntoGroup(), dynamicCommand.getAsColumns(), Collections.emptyList());
                insert.setQueryExpression((Query) command);
                command = insert;
                insertInto = true;
            }
        }
        // if this is an update procedure, it could reassign variables
        command = QueryRewriter.rewrite(command, metadata, procEnv.getContext(), command instanceof CreateProcedureCommand ? Collections.EMPTY_MAP : nameValueMap);
        ProcessorPlan commandPlan = QueryOptimizer.optimizePlan(command, metadata, idGenerator, capFinder, AnalysisRecord.createNonRecordingRecord(), procEnv.getContext());
        if (command instanceof CreateProcedureCommand && commandPlan instanceof ProcedurePlan) {
            ((ProcedurePlan) commandPlan).setValidateAccess(procEnv.isValidateAccess());
        }
        CreateCursorResultSetInstruction inst = new CreateCursorResultSetInstruction(null, commandPlan, (insertInto || updateCommand) ? Mode.UPDATE : returnable ? Mode.HOLD : Mode.NOHOLD) {

            @Override
            public void process(ProcedurePlan procEnv) throws BlockedException, TeiidComponentException, TeiidProcessingException {
                boolean done = true;
                try {
                    super.process(procEnv);
                } catch (BlockedException e) {
                    done = false;
                    throw e;
                } finally {
                    if (done) {
                        procEnv.getContext().popCall();
                    }
                }
            }
        };
        dynamicProgram = new Program(false);
        dynamicProgram.addInstruction(inst);
        if (dynamicCommand.getIntoGroup() != null) {
            String groupName = dynamicCommand.getIntoGroup().getName();
            if (!procEnv.getTempTableStore().hasTempTable(groupName, true)) {
                // create the temp table in the parent scope
                Create create = new Create();
                create.setTable(new GroupSymbol(groupName));
                for (ElementSymbol es : (List<ElementSymbol>) dynamicCommand.getAsColumns()) {
                    Column c = new Column();
                    c.setName(es.getShortName());
                    c.setRuntimeType(DataTypeManager.getDataTypeName(es.getType()));
                    create.getColumns().add(c);
                }
                procEnv.getDataManager().registerRequest(procEnv.getContext(), create, TempMetadataAdapter.TEMP_MODEL.getName(), new RegisterRequestParameter());
            }
            // backwards compatibility to support into with a rowcount
            if (updateCommand) {
                Insert insert = new Insert();
                insert.setGroup(new GroupSymbol(groupName));
                for (ElementSymbol es : (List<ElementSymbol>) dynamicCommand.getAsColumns()) {
                    ElementSymbol col = new ElementSymbol(es.getShortName(), insert.getGroup());
                    col.setType(es.getType());
                    insert.addVariable(col);
                }
                insert.addValue(new Constant(procEnv.getCurrentVariableContext().getValue(ProcedurePlan.ROWCOUNT)));
                QueryResolver.resolveCommand(insert, metadata.getDesignTimeMetadata());
                TupleSource ts = procEnv.getDataManager().registerRequest(procEnv.getContext(), insert, TempMetadataAdapter.TEMP_MODEL.getName(), new RegisterRequestParameter());
                ts.nextTuple();
                ts.closeSource();
            }
        }
        // Add group to recursion stack
        if (parentProcCommand.getUpdateType() != Command.TYPE_UNKNOWN) {
            // $NON-NLS-1$
            procEnv.getContext().pushCall(Command.getCommandToken(parentProcCommand.getUpdateType()) + " " + parentProcCommand.getVirtualGroup());
        } else {
            if (parentProcCommand.getVirtualGroup() != null) {
                procEnv.getContext().pushCall(parentProcCommand.getVirtualGroup().toString());
            }
        }
        procEnv.push(dynamicProgram);
    } catch (SQLException e) {
        Object[] params = { dynamicCommand, dynamicCommand.getSql(), e.getMessage() };
        throw new QueryProcessingException(QueryPlugin.Event.TEIID30168, e, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30168, params));
    } catch (TeiidProcessingException e) {
        Object[] params = { dynamicCommand, query == null ? dynamicCommand.getSql() : query, e.getMessage() };
        throw new QueryProcessingException(QueryPlugin.Event.TEIID30168, e, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30168, params));
    }
}

Example 7 with DynamicCommand

use of org.teiid.query.sql.lang.DynamicCommand in project teiid by teiid.

the class UpdateProcedureResolver method resolveStatement.

private void resolveStatement(CreateProcedureCommand command, Statement statement, GroupContext externalGroups, GroupSymbol variables, TempMetadataAdapter metadata) throws QueryResolverException, QueryMetadataException, TeiidComponentException {
    // $NON-NLS-1$
    LogManager.logTrace(org.teiid.logging.LogConstants.CTX_QUERY_RESOLVER, new Object[] { "Resolving statement", statement });
    switch(statement.getType()) {
        case Statement.TYPE_IF:
            IfStatement ifStmt = (IfStatement) statement;
            Criteria ifCrit = ifStmt.getCondition();
            for (SubqueryContainer container : ValueIteratorProviderCollectorVisitor.getValueIteratorProviders(ifCrit)) {
                resolveEmbeddedCommand(metadata, externalGroups, container.getCommand());
            }
            ResolverVisitor.resolveLanguageObject(ifCrit, null, externalGroups, metadata);
            resolveBlock(command, ifStmt.getIfBlock(), externalGroups, metadata);
            if (ifStmt.hasElseBlock()) {
                resolveBlock(command, ifStmt.getElseBlock(), externalGroups, metadata);
            }
            break;
        case Statement.TYPE_COMMAND:
            CommandStatement cmdStmt = (CommandStatement) statement;
            Command subCommand = cmdStmt.getCommand();
            TempMetadataStore discoveredMetadata = resolveEmbeddedCommand(metadata, externalGroups, subCommand);
            if (subCommand instanceof StoredProcedure) {
                StoredProcedure sp = (StoredProcedure) subCommand;
                for (SPParameter param : sp.getParameters()) {
                    switch(param.getParameterType()) {
                        case ParameterInfo.OUT:
                        case ParameterInfo.RETURN_VALUE:
                            if (param.getExpression() != null) {
                                if (!isAssignable(metadata, param)) {
                                    throw new QueryResolverException(QueryPlugin.Event.TEIID30121, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30121, param.getExpression()));
                                }
                                sp.setCallableStatement(true);
                            }
                            break;
                        case ParameterInfo.INOUT:
                            if (!isAssignable(metadata, param)) {
                                continue;
                            }
                            sp.setCallableStatement(true);
                            break;
                    }
                }
            }
            if (discoveredMetadata != null) {
                metadata.getMetadataStore().getData().putAll(discoveredMetadata.getData());
            }
            // dynamic commands need to be updated as to their implicitly expected projected symbols
            if (subCommand instanceof DynamicCommand) {
                DynamicCommand dynCommand = (DynamicCommand) subCommand;
                if (dynCommand.getIntoGroup() == null && !dynCommand.isAsClauseSet()) {
                    if ((command.getResultSetColumns() != null && command.getResultSetColumns().isEmpty()) || !cmdStmt.isReturnable() || command.getResultSetColumns() == null) {
                        // we're not interested in the resultset
                        dynCommand.setAsColumns(Collections.EMPTY_LIST);
                    } else {
                        // should match the procedure
                        dynCommand.setAsColumns(command.getResultSetColumns());
                    }
                }
            }
            if (command.getResultSetColumns() == null && cmdStmt.isReturnable() && subCommand.returnsResultSet() && subCommand.getResultSetColumns() != null && !subCommand.getResultSetColumns().isEmpty()) {
                command.setResultSetColumns(subCommand.getResultSetColumns());
                if (command.getProjectedSymbols().isEmpty()) {
                    command.setProjectedSymbols(subCommand.getResultSetColumns());
                }
            }
            break;
        case Statement.TYPE_ERROR:
        case Statement.TYPE_ASSIGNMENT:
        case Statement.TYPE_DECLARE:
        case Statement.TYPE_RETURN:
            ExpressionStatement exprStmt = (ExpressionStatement) statement;
            // first resolve the value.  this ensures the value cannot use the variable being defined
            if (exprStmt.getExpression() != null) {
                Expression expr = exprStmt.getExpression();
                for (SubqueryContainer container : ValueIteratorProviderCollectorVisitor.getValueIteratorProviders(expr)) {
                    resolveEmbeddedCommand(metadata, externalGroups, container.getCommand());
                }
                ResolverVisitor.resolveLanguageObject(expr, null, externalGroups, metadata);
            }
            // second resolve the variable
            switch(statement.getType()) {
                case Statement.TYPE_DECLARE:
                    collectDeclareVariable((DeclareStatement) statement, variables, metadata, externalGroups);
                    break;
                case Statement.TYPE_ASSIGNMENT:
                    AssignmentStatement assStmt = (AssignmentStatement) statement;
                    ResolverVisitor.resolveLanguageObject(assStmt.getVariable(), null, externalGroups, metadata);
                    if (!metadata.elementSupports(assStmt.getVariable().getMetadataID(), SupportConstants.Element.UPDATE)) {
                        throw new QueryResolverException(QueryPlugin.Event.TEIID30121, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30121, assStmt.getVariable()));
                    }
                    // don't allow variable assignments to be external
                    assStmt.getVariable().setIsExternalReference(false);
                    break;
                case Statement.TYPE_RETURN:
                    ReturnStatement rs = (ReturnStatement) statement;
                    if (rs.getExpression() != null) {
                        if (command.getReturnVariable() == null) {
                            throw new QueryResolverException(QueryPlugin.Event.TEIID31125, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID31125, rs));
                        }
                        rs.setVariable(command.getReturnVariable().clone());
                    }
                    // else - we don't currently require the use of return for backwards compatibility
                    break;
            }
            // third ensure the type matches
            if (exprStmt.getExpression() != null) {
                Class<?> varType = exprStmt.getExpectedType();
                Class<?> exprType = exprStmt.getExpression().getType();
                if (exprType == null) {
                    throw new QueryResolverException(QueryPlugin.Event.TEIID30123, QueryPlugin.Util.gs(QueryPlugin.Event.TEIID30123));
                }
                String varTypeName = DataTypeManager.getDataTypeName(varType);
                exprStmt.setExpression(ResolverUtil.convertExpression(exprStmt.getExpression(), varTypeName, metadata));
                if (statement.getType() == Statement.TYPE_ERROR) {
                    ResolverVisitor.checkException(exprStmt.getExpression());
                }
            }
            break;
        case Statement.TYPE_WHILE:
            WhileStatement whileStmt = (WhileStatement) statement;
            Criteria whileCrit = whileStmt.getCondition();
            for (SubqueryContainer container : ValueIteratorProviderCollectorVisitor.getValueIteratorProviders(whileCrit)) {
                resolveEmbeddedCommand(metadata, externalGroups, container.getCommand());
            }
            ResolverVisitor.resolveLanguageObject(whileCrit, null, externalGroups, metadata);
            resolveBlock(command, whileStmt.getBlock(), externalGroups, metadata);
            break;
        case Statement.TYPE_LOOP:
            LoopStatement loopStmt = (LoopStatement) statement;
            String groupName = loopStmt.getCursorName();
            isValidGroup(metadata, groupName);
            Command cmd = loopStmt.getCommand();
            resolveEmbeddedCommand(metadata, externalGroups, cmd);
            List<Expression> symbols = cmd.getProjectedSymbols();
            // add the loop cursor group into its own context
            TempMetadataStore store = metadata.getMetadataStore().clone();
            metadata = new TempMetadataAdapter(metadata.getMetadata(), store);
            externalGroups = new GroupContext(externalGroups, null);
            ProcedureContainerResolver.addScalarGroup(groupName, store, externalGroups, symbols, false);
            resolveBlock(command, loopStmt.getBlock(), externalGroups, metadata);
            break;
        case Statement.TYPE_COMPOUND:
            resolveBlock(command, (Block) statement, externalGroups, metadata);
            break;
    }
}

Example 8 with DynamicCommand

use of org.teiid.query.sql.lang.DynamicCommand in project teiid by teiid.

the class TestDynamicCommand method testClone3.

public void testClone3() {
    List symbols = new ArrayList();
    // $NON-NLS-1$
    ElementSymbol a1 = new ElementSymbol("a1");
    a1.setType(DataTypeManager.DefaultDataClasses.STRING);
    symbols.add(a1);
    DynamicCommand sqlCmd = new DynamicCommand();
    // $NON-NLS-1$
    Expression sql = new Constant("SELECT a1 FROM g WHERE a2 = 5");
    sqlCmd.setSql(sql);
    sqlCmd.setAsColumns(symbols);
    sqlCmd.setAsClauseSet(true);
    // $NON-NLS-1$
    sqlCmd.setIntoGroup(new GroupSymbol("#g"));
    List projectedSymbols = sqlCmd.getProjectedSymbols();
    UnitTestUtil.helpTestEquivalence(0, sqlCmd, sqlCmd.clone());
    assertEquals(projectedSymbols, ((DynamicCommand) sqlCmd.clone()).getProjectedSymbols());
}