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

Example 11 with ProjectOperator

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

the class IntroduceGroupByForSubplanRule method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    AbstractLogicalOperator op0 = (AbstractLogicalOperator) opRef.getValue();
    if (op0.getOperatorTag() != LogicalOperatorTag.SUBPLAN) {
        return false;
    }
    SubplanOperator subplan = (SubplanOperator) op0;
    Iterator<ILogicalPlan> plansIter = subplan.getNestedPlans().iterator();
    ILogicalPlan p = null;
    while (plansIter.hasNext()) {
        p = plansIter.next();
    }
    if (p == null) {
        return false;
    }
    if (p.getRoots().size() != 1) {
        return false;
    }
    Mutable<ILogicalOperator> subplanRoot = p.getRoots().get(0);
    AbstractLogicalOperator op1 = (AbstractLogicalOperator) subplanRoot.getValue();
    Mutable<ILogicalOperator> botRef = subplanRoot;
    AbstractLogicalOperator op2;
    // Project is optional
    if (op1.getOperatorTag() != LogicalOperatorTag.PROJECT) {
        op2 = op1;
    } else {
        ProjectOperator project = (ProjectOperator) op1;
        botRef = project.getInputs().get(0);
        op2 = (AbstractLogicalOperator) botRef.getValue();
    }
    if (op2.getOperatorTag() != LogicalOperatorTag.AGGREGATE) {
        return false;
    }
    AggregateOperator aggregate = (AggregateOperator) op2;
    Set<LogicalVariable> free = new HashSet<LogicalVariable>();
    VariableUtilities.getUsedVariables(aggregate, free);
    Mutable<ILogicalOperator> op3Ref = aggregate.getInputs().get(0);
    AbstractLogicalOperator op3 = (AbstractLogicalOperator) op3Ref.getValue();
    while (op3.getInputs().size() == 1) {
        Set<LogicalVariable> prod = new HashSet<LogicalVariable>();
        VariableUtilities.getProducedVariables(op3, prod);
        free.removeAll(prod);
        VariableUtilities.getUsedVariables(op3, free);
        botRef = op3Ref;
        op3Ref = op3.getInputs().get(0);
        op3 = (AbstractLogicalOperator) op3Ref.getValue();
    }
    if (op3.getOperatorTag() != LogicalOperatorTag.INNERJOIN && op3.getOperatorTag() != LogicalOperatorTag.LEFTOUTERJOIN) {
        return false;
    }
    AbstractBinaryJoinOperator join = (AbstractBinaryJoinOperator) op3;
    if (join.getCondition().getValue() == ConstantExpression.TRUE) {
        return false;
    }
    VariableUtilities.getUsedVariables(join, free);
    AbstractLogicalOperator b0 = (AbstractLogicalOperator) join.getInputs().get(0).getValue();
    // see if there's an NTS at the end of the pipeline
    NestedTupleSourceOperator outerNts = getNts(b0);
    if (outerNts == null) {
        AbstractLogicalOperator b1 = (AbstractLogicalOperator) join.getInputs().get(1).getValue();
        outerNts = getNts(b1);
        if (outerNts == null) {
            return false;
        }
    }
    Set<LogicalVariable> pkVars = computeGbyVars(outerNts, free, context);
    if (pkVars == null || pkVars.size() < 1) {
        // there is no non-trivial primary key, group-by keys are all live variables
        // that were produced by descendant or self
        ILogicalOperator subplanInput = subplan.getInputs().get(0).getValue();
        pkVars = new HashSet<LogicalVariable>();
        //get live variables
        VariableUtilities.getLiveVariables(subplanInput, pkVars);
        //get produced variables
        Set<LogicalVariable> producedVars = new HashSet<LogicalVariable>();
        VariableUtilities.getProducedVariablesInDescendantsAndSelf(subplanInput, producedVars);
        //retain the intersection
        pkVars.retainAll(producedVars);
    }
    AlgebricksConfig.ALGEBRICKS_LOGGER.fine("Found FD for introducing group-by: " + pkVars);
    Mutable<ILogicalOperator> rightRef = join.getInputs().get(1);
    LogicalVariable testForNull = null;
    AbstractLogicalOperator right = (AbstractLogicalOperator) rightRef.getValue();
    switch(right.getOperatorTag()) {
        case UNNEST:
            {
                UnnestOperator innerUnnest = (UnnestOperator) right;
                // Select [ $y != null ]
                testForNull = innerUnnest.getVariable();
                break;
            }
        case RUNNINGAGGREGATE:
            {
                ILogicalOperator inputToRunningAggregate = right.getInputs().get(0).getValue();
                Set<LogicalVariable> producedVars = new ListSet<LogicalVariable>();
                VariableUtilities.getProducedVariables(inputToRunningAggregate, producedVars);
                if (!producedVars.isEmpty()) {
                    // Select [ $y != null ]
                    testForNull = producedVars.iterator().next();
                }
                break;
            }
        case DATASOURCESCAN:
            {
                DataSourceScanOperator innerScan = (DataSourceScanOperator) right;
                // Select [ $y != null ]
                if (innerScan.getVariables().size() == 1) {
                    testForNull = innerScan.getVariables().get(0);
                }
                break;
            }
        default:
            break;
    }
    if (testForNull == null) {
        testForNull = context.newVar();
        AssignOperator tmpAsgn = new AssignOperator(testForNull, new MutableObject<ILogicalExpression>(ConstantExpression.TRUE));
        tmpAsgn.getInputs().add(new MutableObject<ILogicalOperator>(rightRef.getValue()));
        rightRef.setValue(tmpAsgn);
        context.computeAndSetTypeEnvironmentForOperator(tmpAsgn);
    }
    IFunctionInfo finfoEq = context.getMetadataProvider().lookupFunction(AlgebricksBuiltinFunctions.IS_MISSING);
    ILogicalExpression isNullTest = new ScalarFunctionCallExpression(finfoEq, new MutableObject<ILogicalExpression>(new VariableReferenceExpression(testForNull)));
    IFunctionInfo finfoNot = context.getMetadataProvider().lookupFunction(AlgebricksBuiltinFunctions.NOT);
    ScalarFunctionCallExpression nonNullTest = new ScalarFunctionCallExpression(finfoNot, new MutableObject<ILogicalExpression>(isNullTest));
    SelectOperator selectNonNull = new SelectOperator(new MutableObject<ILogicalExpression>(nonNullTest), false, null);
    GroupByOperator g = new GroupByOperator();
    Mutable<ILogicalOperator> newSubplanRef = new MutableObject<ILogicalOperator>(subplan);
    NestedTupleSourceOperator nts = new NestedTupleSourceOperator(new MutableObject<ILogicalOperator>(g));
    opRef.setValue(g);
    selectNonNull.getInputs().add(new MutableObject<ILogicalOperator>(nts));
    List<Mutable<ILogicalOperator>> prodInpList = botRef.getValue().getInputs();
    prodInpList.clear();
    prodInpList.add(new MutableObject<ILogicalOperator>(selectNonNull));
    ILogicalPlan gPlan = new ALogicalPlanImpl(new MutableObject<ILogicalOperator>(subplanRoot.getValue()));
    g.getNestedPlans().add(gPlan);
    subplanRoot.setValue(op3Ref.getValue());
    g.getInputs().add(newSubplanRef);
    HashSet<LogicalVariable> underVars = new HashSet<LogicalVariable>();
    VariableUtilities.getLiveVariables(subplan.getInputs().get(0).getValue(), underVars);
    underVars.removeAll(pkVars);
    Map<LogicalVariable, LogicalVariable> mappedVars = buildVarExprList(pkVars, context, g, g.getGroupByList());
    context.updatePrimaryKeys(mappedVars);
    for (LogicalVariable uv : underVars) {
        g.getDecorList().add(new Pair<LogicalVariable, Mutable<ILogicalExpression>>(null, new MutableObject<ILogicalExpression>(new VariableReferenceExpression(uv))));
    }
    OperatorPropertiesUtil.typeOpRec(subplanRoot, context);
    OperatorPropertiesUtil.typeOpRec(gPlan.getRoots().get(0), context);
    context.computeAndSetTypeEnvironmentForOperator(g);
    return true;
}

Example 12 with ProjectOperator

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

the class IntroduceRapidFrameFlushProjectAssignRule method changeRule.

private boolean changeRule(AbstractLogicalOperator op) {
    boolean planModified = false;
    for (int i = 0; i < op.getInputs().size(); ++i) {
        AbstractLogicalOperator descendantOp = (AbstractLogicalOperator) op.getInputs().get(i).getValue();
        if (descendantOp.getOperatorTag() == LogicalOperatorTag.PROJECT) {
            ProjectOperator projectOp = (ProjectOperator) descendantOp;
            StreamProjectPOperator physicalOp = (StreamProjectPOperator) projectOp.getPhysicalOperator();
            physicalOp.setRapidFrameFlush(true);
            planModified = true;
        } else if (descendantOp.getOperatorTag() == LogicalOperatorTag.ASSIGN) {
            AssignOperator assignOp = (AssignOperator) descendantOp;
            AssignPOperator physicalOp = (AssignPOperator) assignOp.getPhysicalOperator();
            physicalOp.setRapidFrameFlush(true);
            planModified = true;
        }
        changeRule(descendantOp);
    }
    return planModified;
}

Example 13 with ProjectOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.ProjectOperator 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 14 with ProjectOperator

use of org.apache.hyracks.algebricks.core.algebra.operators.logical.ProjectOperator 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);
}

Example 15 with ProjectOperator

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

the class AqlExpressionToPlanTranslator method produceFlworPlan.

private Pair<ILogicalOperator, LogicalVariable> produceFlworPlan(boolean noForClause, boolean isTop, Mutable<ILogicalOperator> resOpRef, LogicalVariable resVar) {
    if (isTop) {
        ProjectOperator pr = new ProjectOperator(resVar);
        pr.getInputs().add(resOpRef);
        return new Pair<>(pr, resVar);
    } else if (noForClause) {
        ILogicalOperator resOp = resOpRef.getValue();
        if (resOp.getOperatorTag() == LogicalOperatorTag.ASSIGN) {
            return new Pair<>(resOp, resVar);
        }
        LogicalVariable newResVar = context.newVar();
        ILogicalOperator assign = new AssignOperator(newResVar, new MutableObject<>(new VariableReferenceExpression(resVar)));
        assign.getInputs().add(resOpRef);
        return new Pair<>(assign, newResVar);
    } else {
        return aggListifyForSubquery(resVar, resOpRef, false);
    }
}