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

Example 16 with SubplanOperator

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

the class InsertUpsertCheckUtil method containsDatasetAccessInternal.

// Checks whether a query plan rooted at <code>op</code> contains dataset accesses.
private static boolean containsDatasetAccessInternal(ILogicalOperator op) {
    if (op.getOperatorTag() == LogicalOperatorTag.UNNEST) {
        UnnestOperator unnestOp = (UnnestOperator) op;
        ILogicalExpression unnestExpr = unnestOp.getExpressionRef().getValue();
        UnnestingFunctionCallExpression unnestingFuncExpr = (UnnestingFunctionCallExpression) unnestExpr;
        return unnestingFuncExpr.getFunctionIdentifier().equals(BuiltinFunctions.DATASET);
    }
    if (op.getOperatorTag() == LogicalOperatorTag.SUBPLAN && containsDatasetAccess((SubplanOperator) op)) {
        return true;
    }
    for (Mutable<ILogicalOperator> childRef : op.getInputs()) {
        if (containsDatasetAccessInternal(childRef.getValue())) {
            return true;
        }
    }
    return false;
}

Example 17 with SubplanOperator

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

the class AqlExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(FLWOGRExpression flwor, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    Mutable<ILogicalOperator> flworPlan = tupSource;
    boolean isTop = context.isTopFlwor();
    if (!isTop) {
        context.enterSubplan();
    }
    if (isTop) {
        context.setTopFlwor(false);
    }
    for (Clause c : flwor.getClauseList()) {
        Pair<ILogicalOperator, LogicalVariable> pC = c.accept(this, flworPlan);
        flworPlan = new MutableObject<>(pC.first);
    }
    Expression r = flwor.getReturnExpr();
    boolean noForClause = flwor.noForClause();
    Pair<ILogicalOperator, LogicalVariable> result;
    if (r.getKind() == Kind.VARIABLE_EXPRESSION) {
        VariableExpr v = (VariableExpr) r;
        LogicalVariable var = context.getVar(v.getVar().getId());
        result = produceFlworPlan(noForClause, isTop, flworPlan, var);
    } else {
        Mutable<ILogicalOperator> baseOp = new MutableObject<>(flworPlan.getValue());
        Pair<ILogicalOperator, LogicalVariable> rRes = r.accept(this, baseOp);
        ILogicalOperator rOp = rRes.first;
        ILogicalOperator resOp;
        if (expressionNeedsNoNesting(r)) {
            baseOp.setValue(flworPlan.getValue());
            resOp = rOp;
        } else {
            SubplanOperator s = new SubplanOperator(rOp);
            s.getInputs().add(flworPlan);
            resOp = s;
            baseOp.setValue(new NestedTupleSourceOperator(new MutableObject<ILogicalOperator>(s)));
        }
        Mutable<ILogicalOperator> resOpRef = new MutableObject<>(resOp);
        result = produceFlworPlan(noForClause, isTop, resOpRef, rRes.second);
    }
    if (!isTop) {
        context.exitSubplan();
    }
    return result;
}

Example 18 with SubplanOperator

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

the class SqlppExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(JoinClause joinClause, Mutable<ILogicalOperator> inputRef) throws CompilationException {
    Mutable<ILogicalOperator> leftInputRef = uncorrelatedLeftBranchStack.pop();
    if (joinClause.getJoinType() == JoinType.INNER) {
        Pair<ILogicalOperator, LogicalVariable> rightBranch = generateUnnestForBinaryCorrelateRightBranch(joinClause, inputRef, true);
        // A join operator with condition TRUE.
        AbstractBinaryJoinOperator joinOperator = new InnerJoinOperator(new MutableObject<ILogicalExpression>(ConstantExpression.TRUE), leftInputRef, new MutableObject<ILogicalOperator>(rightBranch.first));
        Mutable<ILogicalOperator> joinOpRef = new MutableObject<>(joinOperator);
        // Add an additional filter operator.
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> conditionExprOpPair = langExprToAlgExpression(joinClause.getConditionExpression(), joinOpRef);
        SelectOperator filter = new SelectOperator(new MutableObject<ILogicalExpression>(conditionExprOpPair.first), false, null);
        filter.getInputs().add(conditionExprOpPair.second);
        return new Pair<>(filter, rightBranch.second);
    } else {
        // Creates a subplan operator.
        SubplanOperator subplanOp = new SubplanOperator();
        Mutable<ILogicalOperator> ntsRef = new MutableObject<>(new NestedTupleSourceOperator(new MutableObject<ILogicalOperator>(subplanOp)));
        subplanOp.getInputs().add(leftInputRef);
        // Enters the translation for a subplan.
        context.enterSubplan();
        // Adds an unnest operator to unnest to right expression.
        Pair<ILogicalOperator, LogicalVariable> rightBranch = generateUnnestForBinaryCorrelateRightBranch(joinClause, ntsRef, true);
        AbstractUnnestNonMapOperator rightUnnestOp = (AbstractUnnestNonMapOperator) rightBranch.first;
        // Adds an additional filter operator for the join condition.
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> conditionExprOpPair = langExprToAlgExpression(joinClause.getConditionExpression(), new MutableObject<ILogicalOperator>(rightUnnestOp));
        SelectOperator filter = new SelectOperator(new MutableObject<ILogicalExpression>(conditionExprOpPair.first), false, null);
        filter.getInputs().add(conditionExprOpPair.second);
        ILogicalOperator currentTopOp = filter;
        LogicalVariable varToListify;
        boolean hasRightPosVar = rightUnnestOp.getPositionalVariable() != null;
        if (hasRightPosVar) {
            // Creates record to get correlation between the two aggregate variables.
            ScalarFunctionCallExpression recordCreationFunc = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.CLOSED_RECORD_CONSTRUCTOR), // Field name for the listified right unnest var.
            new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AString("unnestvar")))), // The listified right unnest var
            new MutableObject<ILogicalExpression>(new VariableReferenceExpression(rightUnnestOp.getVariable())), // Field name for the listified right unnest positional var.
            new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AString("posvar")))), // The listified right unnest positional var.
            new MutableObject<ILogicalExpression>(new VariableReferenceExpression(rightUnnestOp.getPositionalVariable())));
            // Assigns the record constructor function to a record variable.
            LogicalVariable recordVar = context.newVar();
            AssignOperator assignOp = new AssignOperator(recordVar, new MutableObject<ILogicalExpression>(recordCreationFunc));
            assignOp.getInputs().add(new MutableObject<ILogicalOperator>(currentTopOp));
            // Sets currentTopOp and varToListify for later usages.
            currentTopOp = assignOp;
            varToListify = recordVar;
        } else {
            varToListify = rightUnnestOp.getVariable();
        }
        // Adds an aggregate operator to listfy unnest variables.
        AggregateFunctionCallExpression fListify = BuiltinFunctions.makeAggregateFunctionExpression(BuiltinFunctions.LISTIFY, mkSingletonArrayList(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(varToListify))));
        LogicalVariable aggVar = context.newSubplanOutputVar();
        AggregateOperator aggOp = new AggregateOperator(mkSingletonArrayList(aggVar), mkSingletonArrayList(new MutableObject<ILogicalExpression>(fListify)));
        aggOp.getInputs().add(new MutableObject<ILogicalOperator>(currentTopOp));
        // Exits the translation of a subplan.
        context.exitSubplan();
        // Sets the nested subplan of the subplan operator.
        ILogicalPlan subplan = new ALogicalPlanImpl(new MutableObject<ILogicalOperator>(aggOp));
        subplanOp.getNestedPlans().add(subplan);
        // Outer unnest the aggregated var from the subplan.
        LogicalVariable outerUnnestVar = context.newVar();
        LeftOuterUnnestOperator outerUnnestOp = new LeftOuterUnnestOperator(outerUnnestVar, new MutableObject<ILogicalExpression>(makeUnnestExpression(new VariableReferenceExpression(aggVar))));
        outerUnnestOp.getInputs().add(new MutableObject<ILogicalOperator>(subplanOp));
        currentTopOp = outerUnnestOp;
        if (hasRightPosVar) {
            ScalarFunctionCallExpression fieldAccessForRightUnnestVar = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_INDEX), new MutableObject<ILogicalExpression>(new VariableReferenceExpression(outerUnnestVar)), new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AInt32(0)))));
            ScalarFunctionCallExpression fieldAccessForRightPosVar = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_INDEX), new MutableObject<ILogicalExpression>(new VariableReferenceExpression(outerUnnestVar)), new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AInt32(1)))));
            // Creates variables for assign.
            LogicalVariable rightUnnestVar = context.newVar();
            LogicalVariable rightPosVar = context.newVar();
            // Relate the assigned variables to the variable expression in AST.
            context.setVar(joinClause.getRightVariable(), rightUnnestVar);
            context.setVar(joinClause.getPositionalVariable(), rightPosVar);
            // Varaibles to assign.
            List<LogicalVariable> assignVars = new ArrayList<>();
            assignVars.add(rightUnnestVar);
            assignVars.add(rightPosVar);
            // Expressions for assign.
            List<Mutable<ILogicalExpression>> assignExprs = new ArrayList<>();
            assignExprs.add(new MutableObject<ILogicalExpression>(fieldAccessForRightUnnestVar));
            assignExprs.add(new MutableObject<ILogicalExpression>(fieldAccessForRightPosVar));
            // Creates the assign operator.
            AssignOperator assignOp = new AssignOperator(assignVars, assignExprs);
            assignOp.getInputs().add(new MutableObject<ILogicalOperator>(currentTopOp));
            currentTopOp = assignOp;
        } else {
            context.setVar(joinClause.getRightVariable(), outerUnnestVar);
        }
        return new Pair<>(currentTopOp, null);
    }
}

Example 19 with SubplanOperator

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

the class SubplanPOperator method computeDeliveredProperties.

@Override
public void computeDeliveredProperties(ILogicalOperator op, IOptimizationContext context) {
    AbstractLogicalOperator op2 = (AbstractLogicalOperator) op.getInputs().get(0).getValue();
    IPhysicalPropertiesVector childsProperties = op2.getPhysicalOperator().getDeliveredProperties();
    List<ILocalStructuralProperty> propsLocal = new ArrayList<>();
    if (childsProperties.getLocalProperties() != null) {
        propsLocal.addAll(childsProperties.getLocalProperties());
    }
    // ... get local properties for newly created variables...
    SubplanOperator subplan = (SubplanOperator) op;
    for (ILogicalPlan plan : subplan.getNestedPlans()) {
        for (Mutable<ILogicalOperator> r : plan.getRoots()) {
            AbstractLogicalOperator rOp = (AbstractLogicalOperator) r.getValue();
            propsLocal.addAll(rOp.getPhysicalOperator().getDeliveredProperties().getLocalProperties());
        }
    }
    deliveredProperties = new StructuralPropertiesVector(childsProperties.getPartitioningProperty(), propsLocal);
}

Example 20 with SubplanOperator

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

the class SubplanPOperator method contributeRuntimeOperator.

@Override
public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op, IOperatorSchema opSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema) throws AlgebricksException {
    SubplanOperator subplan = (SubplanOperator) op;
    if (subplan.getNestedPlans().size() != 1) {
        throw new NotImplementedException("Subplan currently works only for one nested plan with one root.");
    }
    AlgebricksPipeline[] subplans = compileSubplans(inputSchemas[0], subplan, opSchema, context);
    assert subplans.length == 1;
    AlgebricksPipeline np = subplans[0];
    RecordDescriptor inputRecordDesc = JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op.getInputs().get(0).getValue()), inputSchemas[0], context);
    IMissingWriterFactory[] missingWriterFactories = new IMissingWriterFactory[np.getOutputWidth()];
    for (int i = 0; i < missingWriterFactories.length; i++) {
        missingWriterFactories[i] = context.getMissingWriterFactory();
    }
    SubplanRuntimeFactory runtime = new SubplanRuntimeFactory(np, missingWriterFactories, inputRecordDesc, null);
    RecordDescriptor recDesc = JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op), opSchema, context);
    builder.contributeMicroOperator(subplan, runtime, recDesc);
    ILogicalOperator src = op.getInputs().get(0).getValue();
    builder.contributeGraphEdge(src, 0, op, 0);
}