Examples with DelegateOperator org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator used on opensource projects

Example 6 with DelegateOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator in project asterixdb by apache.

the class IntroduceStaticTypeCastForInsertRule method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    /**
         * pattern match: sink/insert/assign record type is propagated from
         * insert data source to the record-constructor expression
         */
    if (context.checkIfInDontApplySet(this, opRef.getValue())) {
        return false;
    }
    context.addToDontApplySet(this, opRef.getValue());
    AbstractLogicalOperator op1 = (AbstractLogicalOperator) opRef.getValue();
    List<LogicalVariable> producedVariables = new ArrayList<LogicalVariable>();
    LogicalVariable oldRecordVariable;
    if (op1.getOperatorTag() != LogicalOperatorTag.DELEGATE_OPERATOR && op1.getOperatorTag() != LogicalOperatorTag.SINK) {
        return false;
    }
    if (op1.getOperatorTag() == LogicalOperatorTag.DELEGATE_OPERATOR) {
        DelegateOperator eOp = (DelegateOperator) op1;
        if (!(eOp.getDelegate() instanceof CommitOperator)) {
            return false;
        }
    }
    AbstractLogicalOperator op2 = (AbstractLogicalOperator) op1.getInputs().get(0).getValue();
    if (op2.getOperatorTag() != LogicalOperatorTag.INSERT_DELETE_UPSERT) {
        return false;
    }
    InsertDeleteUpsertOperator insertDeleteOp = (InsertDeleteUpsertOperator) op2;
    if (insertDeleteOp.getOperation() == InsertDeleteUpsertOperator.Kind.DELETE) {
        return false;
    }
    /**
         * get required record type
         */
    InsertDeleteUpsertOperator insertDeleteOperator = (InsertDeleteUpsertOperator) op2;
    DataSource dataSource = (DataSource) insertDeleteOperator.getDataSource();
    IAType requiredRecordType = dataSource.getItemType();
    List<LogicalVariable> usedVariables = new ArrayList<LogicalVariable>();
    insertDeleteOperator.getPayloadExpression().getValue().getUsedVariables(usedVariables);
    // empty
    if (usedVariables.size() == 0) {
        return false;
    }
    oldRecordVariable = usedVariables.get(0);
    LogicalVariable inputRecordVar = usedVariables.get(0);
    IVariableTypeEnvironment env = insertDeleteOperator.computeOutputTypeEnvironment(context);
    IAType inputRecordType = (IAType) env.getVarType(inputRecordVar);
    AbstractLogicalOperator currentOperator = (AbstractLogicalOperator) op2.getInputs().get(0).getValue();
    /**
         * find the assign operator for the "input record" to the insert_delete
         * operator
         */
    do {
        context.addToDontApplySet(this, currentOperator);
        if (currentOperator.getOperatorTag() == LogicalOperatorTag.ASSIGN) {
            AssignOperator assignOp = (AssignOperator) currentOperator;
            producedVariables.clear();
            VariableUtilities.getProducedVariables(currentOperator, producedVariables);
            int position = producedVariables.indexOf(oldRecordVariable);
            /**
                 * set the top-down propagated type
                 */
            if (position >= 0) {
                AssignOperator originalAssign = (AssignOperator) currentOperator;
                List<Mutable<ILogicalExpression>> expressionRefs = originalAssign.getExpressions();
                ILogicalExpression expr = expressionRefs.get(position).getValue();
                if (expr.getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) {
                    AbstractFunctionCallExpression funcExpr = (AbstractFunctionCallExpression) expr;
                    // fail but just return false
                    if (TypeCastUtils.getRequiredType(funcExpr) != null) {
                        context.computeAndSetTypeEnvironmentForOperator(assignOp);
                        return false;
                    }
                    IVariableTypeEnvironment assignEnv = assignOp.computeOutputTypeEnvironment(context);
                    StaticTypeCastUtil.rewriteFuncExpr(funcExpr, requiredRecordType, inputRecordType, assignEnv);
                }
                context.computeAndSetTypeEnvironmentForOperator(originalAssign);
            }
        }
        if (currentOperator.getInputs().size() > 0) {
            currentOperator = (AbstractLogicalOperator) currentOperator.getInputs().get(0).getValue();
        } else {
            break;
        }
    } while (currentOperator != null);
    return true;
}

Example 7 with DelegateOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator in project asterixdb by apache.

the class IntroduceAutogenerateIDRule method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    // match: commit OR distribute-result OR SINK - ... followed by:
    // [insert to internal dataset with autogenerated id] - assign - project
    // produce: insert - assign - assign* - project
    // **
    // OR [insert to internal dataset with autogenerated id] - assign - [datasource scan]
    // produce insert - assign - assign* - datasource scan
    AbstractLogicalOperator currentOp = (AbstractLogicalOperator) opRef.getValue();
    if (currentOp.getOperatorTag() == LogicalOperatorTag.DELEGATE_OPERATOR) {
        DelegateOperator dOp = (DelegateOperator) currentOp;
        if (!(dOp.getDelegate() instanceof CommitOperator)) {
            return false;
        } else if (!((CommitOperator) dOp.getDelegate()).isSink()) {
            return false;
        }
    } else if (currentOp.getOperatorTag() != LogicalOperatorTag.DISTRIBUTE_RESULT && currentOp.getOperatorTag() != LogicalOperatorTag.SINK) {
        return false;
    }
    ArrayDeque<AbstractLogicalOperator> opStack = new ArrayDeque<>();
    opStack.push(currentOp);
    while (currentOp.getInputs().size() == 1) {
        currentOp = (AbstractLogicalOperator) currentOp.getInputs().get(0).getValue();
        if (currentOp.getOperatorTag() == LogicalOperatorTag.INSERT_DELETE_UPSERT) {
            break;
        }
        opStack.push(currentOp);
    }
    if (currentOp.getOperatorTag() != LogicalOperatorTag.INSERT_DELETE_UPSERT) {
        return false;
    }
    InsertDeleteUpsertOperator insertOp = (InsertDeleteUpsertOperator) currentOp;
    if (insertOp.getOperation() != Kind.INSERT && insertOp.getOperation() != Kind.UPSERT) {
        return false;
    }
    DatasetDataSource dds = (DatasetDataSource) insertOp.getDataSource();
    boolean autogenerated = ((InternalDatasetDetails) dds.getDataset().getDatasetDetails()).isAutogenerated();
    if (!autogenerated) {
        return false;
    }
    if (((DataSource) insertOp.getDataSource()).getDatasourceType() != Type.INTERNAL_DATASET) {
        return false;
    }
    AbstractLogicalOperator parentOp = (AbstractLogicalOperator) currentOp.getInputs().get(0).getValue();
    if (parentOp.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
        return false;
    }
    AssignOperator assignOp = (AssignOperator) parentOp;
    LogicalVariable inputRecord;
    //TODO: bug here. will not work for internal datasets with filters since the pattern becomes 
    //[project-assign-assign-insert]
    AbstractLogicalOperator grandparentOp = (AbstractLogicalOperator) parentOp.getInputs().get(0).getValue();
    if (grandparentOp.getOperatorTag() == LogicalOperatorTag.PROJECT) {
        ProjectOperator projectOp = (ProjectOperator) grandparentOp;
        inputRecord = projectOp.getVariables().get(0);
    } else if (grandparentOp.getOperatorTag() == LogicalOperatorTag.DATASOURCESCAN) {
        DataSourceScanOperator dssOp = (DataSourceScanOperator) grandparentOp;
        inputRecord = dssOp.getVariables().get(0);
    } else {
        return false;
    }
    List<String> pkFieldName = ((InternalDatasetDetails) dds.getDataset().getDatasetDetails()).getPrimaryKey().get(0);
    ILogicalExpression rec0 = new VariableReferenceExpression(inputRecord);
    ILogicalExpression rec1 = createPrimaryKeyRecordExpression(pkFieldName);
    ILogicalExpression mergedRec = createRecordMergeFunction(rec0, rec1);
    ILogicalExpression nonNullMergedRec = createNotNullFunction(mergedRec);
    LogicalVariable v = context.newVar();
    AssignOperator newAssign = new AssignOperator(v, new MutableObject<ILogicalExpression>(nonNullMergedRec));
    newAssign.getInputs().add(new MutableObject<ILogicalOperator>(grandparentOp));
    assignOp.getInputs().set(0, new MutableObject<ILogicalOperator>(newAssign));
    VariableUtilities.substituteVariables(assignOp, inputRecord, v, context);
    VariableUtilities.substituteVariables(insertOp, inputRecord, v, context);
    context.computeAndSetTypeEnvironmentForOperator(newAssign);
    context.computeAndSetTypeEnvironmentForOperator(assignOp);
    context.computeAndSetTypeEnvironmentForOperator(insertOp);
    ;
    for (AbstractLogicalOperator op : opStack) {
        VariableUtilities.substituteVariables(op, inputRecord, v, context);
        context.computeAndSetTypeEnvironmentForOperator(op);
    }
    return true;
}

Example 8 with DelegateOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator in project asterixdb by apache.

the class IntroduceSelectAccessMethodRule method rewritePre.

/**
     * Recursively check the given plan from the root operator to transform a plan
     * with SELECT operator into an index-utilized plan.
     */
@Override
public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    clear();
    setMetadataDeclarations(context);
    AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
    // Already checked?
    if (context.checkIfInDontApplySet(this, op)) {
        return false;
    }
    // which is DISTRIBUTE_RESULT, SINK, or COMMIT since we start the process from the root operator.
    if (op.getOperatorTag() != LogicalOperatorTag.DISTRIBUTE_RESULT && op.getOperatorTag() != LogicalOperatorTag.SINK && op.getOperatorTag() != LogicalOperatorTag.DELEGATE_OPERATOR) {
        return false;
    }
    if (op.getOperatorTag() == LogicalOperatorTag.DELEGATE_OPERATOR && !(((DelegateOperator) op).getDelegate() instanceof CommitOperator)) {
        return false;
    }
    afterSelectRefs = new ArrayList<>();
    // Recursively check the given plan whether the desired pattern exists in it.
    // If so, try to optimize the plan.
    boolean planTransformed = checkAndApplyTheSelectTransformation(opRef, context);
    if (selectOp != null) {
        // We found an optimization here. Don't need to optimize this operator again.
        context.addToDontApplySet(this, selectOp);
    }
    if (!planTransformed) {
        return false;
    } else {
        OperatorPropertiesUtil.typeOpRec(opRef, context);
    }
    return planTransformed;
}

Example 9 with DelegateOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator in project asterixdb by apache.

the class IntroduceJoinAccessMethodRule method rewritePre.

/**
     * Recursively check the given plan from the root operator to transform a plan
     * with JOIN or LEFT-OUTER-JOIN operator into an index-utilized plan.
     */
@Override
public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    clear();
    setMetadataDeclarations(context);
    AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
    // Already checked?
    if (context.checkIfInDontApplySet(this, op)) {
        return false;
    }
    // we start the process from the root operator.
    if (op.getOperatorTag() != LogicalOperatorTag.DISTRIBUTE_RESULT && op.getOperatorTag() != LogicalOperatorTag.SINK && op.getOperatorTag() != LogicalOperatorTag.DELEGATE_OPERATOR) {
        return false;
    }
    if (op.getOperatorTag() == LogicalOperatorTag.DELEGATE_OPERATOR && !(((DelegateOperator) op).getDelegate() instanceof CommitOperator)) {
        return false;
    }
    // Recursively check the given plan whether the desired pattern exists in it.
    // If so, try to optimize the plan.
    boolean planTransformed = checkAndApplyJoinTransformation(opRef, context);
    if (joinOp != null) {
        // We found an optimization here. Don't need to optimize this operator again.
        context.addToDontApplySet(this, joinOp);
    }
    if (!planTransformed) {
        return false;
    } else {
        OperatorPropertiesUtil.typeOpRec(opRef, context);
    }
    return planTransformed;
}

Example 10 with DelegateOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator in project asterixdb by apache.

the class LangExpressionToPlanTranslator method translateUpsert.

private ILogicalOperator translateUpsert(DatasetDataSource targetDatasource, Mutable<ILogicalExpression> varRef, List<Mutable<ILogicalExpression>> varRefsForLoading, List<Mutable<ILogicalExpression>> additionalFilteringExpressions, ILogicalOperator assign, List<String> additionalFilteringField, LogicalVariable unnestVar, ILogicalOperator topOp, List<Mutable<ILogicalExpression>> exprs, LogicalVariable resVar, AssignOperator additionalFilteringAssign, ICompiledDmlStatement stmt) throws AlgebricksException {
    if (!targetDatasource.getDataset().allow(topOp, DatasetUtil.OP_UPSERT)) {
        throw new AlgebricksException(targetDatasource.getDataset().getDatasetName() + ": upsert into dataset is not supported on Datasets with Meta records");
    }
    ProjectOperator project = (ProjectOperator) topOp;
    CompiledUpsertStatement compiledUpsert = (CompiledUpsertStatement) stmt;
    Expression returnExpression = compiledUpsert.getReturnExpression();
    InsertDeleteUpsertOperator upsertOp;
    ILogicalOperator rootOperator;
    if (targetDatasource.getDataset().hasMetaPart()) {
        if (returnExpression != null) {
            throw new AlgebricksException("Returning not allowed on datasets with Meta records");
        }
        AssignOperator metaAndKeysAssign;
        List<LogicalVariable> metaAndKeysVars;
        List<Mutable<ILogicalExpression>> metaAndKeysExprs;
        List<Mutable<ILogicalExpression>> metaExpSingletonList;
        metaAndKeysVars = new ArrayList<>();
        metaAndKeysExprs = new ArrayList<>();
        // add the meta function
        IFunctionInfo finfoMeta = FunctionUtil.getFunctionInfo(BuiltinFunctions.META);
        ScalarFunctionCallExpression metaFunction = new ScalarFunctionCallExpression(finfoMeta, new MutableObject<>(new VariableReferenceExpression(unnestVar)));
        // create assign for the meta part
        LogicalVariable metaVar = context.newVar();
        metaExpSingletonList = new ArrayList<>(1);
        metaExpSingletonList.add(new MutableObject<>(new VariableReferenceExpression(metaVar)));
        metaAndKeysVars.add(metaVar);
        metaAndKeysExprs.add(new MutableObject<>(metaFunction));
        project.getVariables().add(metaVar);
        varRefsForLoading.clear();
        for (Mutable<ILogicalExpression> assignExpr : exprs) {
            if (assignExpr.getValue().getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) {
                AbstractFunctionCallExpression funcCall = (AbstractFunctionCallExpression) assignExpr.getValue();
                funcCall.substituteVar(resVar, unnestVar);
                LogicalVariable pkVar = context.newVar();
                metaAndKeysVars.add(pkVar);
                metaAndKeysExprs.add(new MutableObject<>(assignExpr.getValue()));
                project.getVariables().add(pkVar);
                varRefsForLoading.add(new MutableObject<>(new VariableReferenceExpression(pkVar)));
            }
        }
        // A change feed, we don't need the assign to access PKs
        upsertOp = new InsertDeleteUpsertOperator(targetDatasource, varRef, varRefsForLoading, metaExpSingletonList, InsertDeleteUpsertOperator.Kind.UPSERT, false);
        // Create and add a new variable used for representing the original record
        upsertOp.setPrevRecordVar(context.newVar());
        upsertOp.setPrevRecordType(targetDatasource.getItemType());
        if (targetDatasource.getDataset().hasMetaPart()) {
            List<LogicalVariable> metaVars = new ArrayList<>();
            metaVars.add(context.newVar());
            upsertOp.setPrevAdditionalNonFilteringVars(metaVars);
            List<Object> metaTypes = new ArrayList<>();
            metaTypes.add(targetDatasource.getMetaItemType());
            upsertOp.setPrevAdditionalNonFilteringTypes(metaTypes);
        }
        if (additionalFilteringField != null) {
            upsertOp.setPrevFilterVar(context.newVar());
            upsertOp.setPrevFilterType(((ARecordType) targetDatasource.getItemType()).getFieldType(additionalFilteringField.get(0)));
            additionalFilteringAssign.getInputs().clear();
            additionalFilteringAssign.getInputs().add(assign.getInputs().get(0));
            upsertOp.getInputs().add(new MutableObject<>(additionalFilteringAssign));
        } else {
            upsertOp.getInputs().add(assign.getInputs().get(0));
        }
        metaAndKeysAssign = new AssignOperator(metaAndKeysVars, metaAndKeysExprs);
        metaAndKeysAssign.getInputs().add(topOp.getInputs().get(0));
        topOp.getInputs().set(0, new MutableObject<>(metaAndKeysAssign));
        upsertOp.setAdditionalFilteringExpressions(additionalFilteringExpressions);
    } else {
        upsertOp = new InsertDeleteUpsertOperator(targetDatasource, varRef, varRefsForLoading, InsertDeleteUpsertOperator.Kind.UPSERT, false);
        upsertOp.setAdditionalFilteringExpressions(additionalFilteringExpressions);
        upsertOp.getInputs().add(new MutableObject<>(assign));
        // Create and add a new variable used for representing the original record
        ARecordType recordType = (ARecordType) targetDatasource.getItemType();
        upsertOp.setPrevRecordVar(context.newVar());
        upsertOp.setPrevRecordType(recordType);
        if (additionalFilteringField != null) {
            upsertOp.setPrevFilterVar(context.newVar());
            upsertOp.setPrevFilterType(recordType.getFieldType(additionalFilteringField.get(0)));
        }
    }
    rootOperator = new DelegateOperator(new CommitOperator(returnExpression == null));
    rootOperator.getInputs().add(new MutableObject<>(upsertOp));
    // Compiles the return expression.
    return processReturningExpression(rootOperator, upsertOp, compiledUpsert);
}