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

Example 11 with AbstractBinaryJoinOperator

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

the class PushSubplanWithAggregateDownThroughProductRule method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    AbstractLogicalOperator op1 = (AbstractLogicalOperator) opRef.getValue();
    if (op1.getOperatorTag() != LogicalOperatorTag.SUBPLAN) {
        return false;
    }
    SubplanOperator subplan = (SubplanOperator) op1;
    if (subplan.getNestedPlans().size() != 1) {
        return false;
    }
    ILogicalPlan p = subplan.getNestedPlans().get(0);
    if (p.getRoots().size() != 1) {
        return false;
    }
    Mutable<ILogicalOperator> r = p.getRoots().get(0);
    if (((AbstractLogicalOperator) r.getValue()).getOperatorTag() != LogicalOperatorTag.AGGREGATE) {
        return false;
    }
    Set<LogicalVariable> free = new HashSet<LogicalVariable>();
    OperatorPropertiesUtil.getFreeVariablesInSubplans(subplan, free);
    Mutable<ILogicalOperator> op2Ref = op1.getInputs().get(0);
    AbstractLogicalOperator op2 = (AbstractLogicalOperator) op2Ref.getValue();
    if (op2.getOperatorTag() != LogicalOperatorTag.INNERJOIN) {
        return false;
    }
    AbstractBinaryJoinOperator join = (AbstractBinaryJoinOperator) op2;
    if (!OperatorPropertiesUtil.isAlwaysTrueCond(join.getCondition().getValue())) {
        return false;
    }
    Mutable<ILogicalOperator> b0Ref = op2.getInputs().get(0);
    ILogicalOperator b0 = b0Ref.getValue();
    List<LogicalVariable> b0Scm = new ArrayList<LogicalVariable>();
    VariableUtilities.getLiveVariables(b0, b0Scm);
    if (b0Scm.containsAll(free)) {
        // push subplan on left branch
        op2Ref.setValue(b0);
        b0Ref.setValue(op1);
        opRef.setValue(op2);
        return true;
    } else {
        Mutable<ILogicalOperator> b1Ref = op2.getInputs().get(1);
        ILogicalOperator b1 = b1Ref.getValue();
        List<LogicalVariable> b1Scm = new ArrayList<LogicalVariable>();
        VariableUtilities.getLiveVariables(b1, b1Scm);
        if (b1Scm.containsAll(free)) {
            // push subplan on right branch
            op2Ref.setValue(b1);
            b1Ref.setValue(op1);
            opRef.setValue(op2);
            return true;
        } else {
            return false;
        }
    }
}

Example 12 with AbstractBinaryJoinOperator

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

the class PushAssignDownThroughProductRule method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    AbstractLogicalOperator op1 = (AbstractLogicalOperator) opRef.getValue();
    if (op1.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
        return false;
    }
    Mutable<ILogicalOperator> op2Ref = op1.getInputs().get(0);
    AbstractLogicalOperator op2 = (AbstractLogicalOperator) op2Ref.getValue();
    if (op2.getOperatorTag() != LogicalOperatorTag.INNERJOIN) {
        return false;
    }
    AbstractBinaryJoinOperator join = (AbstractBinaryJoinOperator) op2;
    if (join.getCondition().getValue() != ConstantExpression.TRUE) {
        return false;
    }
    List<LogicalVariable> used = new ArrayList<LogicalVariable>();
    VariableUtilities.getUsedVariables(op1, used);
    Mutable<ILogicalOperator> b0Ref = op2.getInputs().get(0);
    ILogicalOperator b0 = b0Ref.getValue();
    List<LogicalVariable> b0Scm = new ArrayList<LogicalVariable>();
    VariableUtilities.getLiveVariables(b0, b0Scm);
    if (b0Scm.containsAll(used)) {
        // push assign on left branch
        op2Ref.setValue(b0);
        b0Ref.setValue(op1);
        opRef.setValue(op2);
        return true;
    } else {
        Mutable<ILogicalOperator> b1Ref = op2.getInputs().get(1);
        ILogicalOperator b1 = b1Ref.getValue();
        List<LogicalVariable> b1Scm = new ArrayList<LogicalVariable>();
        VariableUtilities.getLiveVariables(b1, b1Scm);
        if (b1Scm.containsAll(used)) {
            // push assign on right branch
            op2Ref.setValue(b1);
            b1Ref.setValue(op1);
            opRef.setValue(op2);
            return true;
        } else {
            return false;
        }
    }
}

Example 13 with AbstractBinaryJoinOperator

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

the class PushFunctionsBelowJoin method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
    if (op.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
        return false;
    }
    AssignOperator assignOp = (AssignOperator) op;
    // Find a join operator below this assign.
    Mutable<ILogicalOperator> joinOpRef = findJoinOp(assignOp.getInputs().get(0));
    if (joinOpRef == null) {
        return false;
    }
    AbstractBinaryJoinOperator joinOp = (AbstractBinaryJoinOperator) joinOpRef.getValue();
    // Check if the assign uses a function that we wish to push below the join if possible.
    funcExprs.clear();
    gatherFunctionCalls(assignOp, funcExprs);
    if (funcExprs.isEmpty()) {
        return false;
    }
    // Try to push the functions down the input branches of the join.
    boolean modified = false;
    if (pushDownFunctions(joinOp, 0, funcExprs, context)) {
        modified = true;
    }
    if (pushDownFunctions(joinOp, 1, funcExprs, context)) {
        modified = true;
    }
    if (modified) {
        context.computeAndSetTypeEnvironmentForOperator(joinOp);
    }
    return modified;
}

Example 14 with AbstractBinaryJoinOperator

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

the class PullSelectOutOfEqJoin method rewritePost.

@Override
public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
    AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
    if (op.getOperatorTag() != LogicalOperatorTag.INNERJOIN) {
        return false;
    }
    AbstractBinaryJoinOperator join = (AbstractBinaryJoinOperator) op;
    ILogicalExpression expr = join.getCondition().getValue();
    if (expr.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
        return false;
    }
    AbstractFunctionCallExpression fexp = (AbstractFunctionCallExpression) expr;
    FunctionIdentifier fi = fexp.getFunctionIdentifier();
    if (!fi.equals(AlgebricksBuiltinFunctions.AND)) {
        return false;
    }
    List<Mutable<ILogicalExpression>> eqVarVarComps = new ArrayList<Mutable<ILogicalExpression>>();
    List<Mutable<ILogicalExpression>> otherPredicates = new ArrayList<Mutable<ILogicalExpression>>();
    for (Mutable<ILogicalExpression> arg : fexp.getArguments()) {
        if (isEqVarVar(arg.getValue())) {
            eqVarVarComps.add(arg);
        } else {
            otherPredicates.add(arg);
        }
    }
    if (eqVarVarComps.isEmpty() || otherPredicates.isEmpty()) {
        return false;
    }
    // pull up
    ILogicalExpression pulledCond = makeCondition(otherPredicates, context);
    SelectOperator select = new SelectOperator(new MutableObject<ILogicalExpression>(pulledCond), false, null);
    ILogicalExpression newJoinCond = makeCondition(eqVarVarComps, context);
    join.getCondition().setValue(newJoinCond);
    select.getInputs().add(new MutableObject<ILogicalOperator>(join));
    opRef.setValue(select);
    context.computeAndSetTypeEnvironmentForOperator(select);
    return true;
}

Example 15 with AbstractBinaryJoinOperator

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