Examples of AbstractLogicalOperator

Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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            return false;
        }
        int variableId = 0;

        // TODO Move the setVarCounter to the compiler after the translator has run.
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        switch (op.getOperatorTag()) {
            case ASSIGN:
            case AGGREGATE:
                AbstractAssignOperator assign = (AbstractAssignOperator) op;
                variableId = assign.getVariables().get(0).getId();
                break;
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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                    SequenceType.create(AnyItemType.INSTANCE, Quantifier.QUANT_STAR));
            if (ds != null) {
                ds.setTotalDataSources(vxqueryContext.getTotalDataSources());

                // Known to be true because of collection name.
                AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
                UnnestOperator unnest = (UnnestOperator) op;
                AbstractLogicalOperator op2 = (AbstractLogicalOperator) unnest.getInputs().get(0).getValue();
                AssignOperator assign = (AssignOperator) op2;

                DataSourceScanOperator opNew = new DataSourceScanOperator(unnest.getVariables(), ds);
                opNew.getInputs().addAll(assign.getInputs());
                opRef.setValue(opNew);
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.SelectOperator;

public class OperatorToolbox {

    public static Mutable<ILogicalOperator> findLastSubplanOperator(Mutable<ILogicalOperator> opRef) {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef;
        AbstractLogicalOperator next;
        while (op.getOperatorTag() != LogicalOperatorTag.NESTEDTUPLESOURCE) {
            opRef = op.getInputs().get(0);
            op = (AbstractLogicalOperator) opRef;
            next = (AbstractLogicalOperator) op.getInputs().get(0).getValue();
            if (next.getOperatorTag() == LogicalOperatorTag.NESTEDTUPLESOURCE) {
                break;
            }
        }
        return opRef;
    }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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        }
        return opRef;
    }

    public static AbstractLogicalOperator findLastSubplanOperator(AbstractLogicalOperator op) {
        AbstractLogicalOperator next;
        while (op.getOperatorTag() != LogicalOperatorTag.NESTEDTUPLESOURCE) {
            op = (AbstractLogicalOperator) op.getInputs().get(0).getValue();
            next = (AbstractLogicalOperator) op.getInputs().get(0).getValue();
            if (next.getOperatorTag() == LogicalOperatorTag.NESTEDTUPLESOURCE) {
                break;
            }
        }
        return op;
    }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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        }
        return op;
    }

    public static List<Mutable<ILogicalExpression>> getExpressions(Mutable<ILogicalOperator> opRef) {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        List<Mutable<ILogicalExpression>> result = new ArrayList<Mutable<ILogicalExpression>>();
        switch (op.getOperatorTag()) {
            case AGGREGATE:
            case ASSIGN:
            case RUNNINGAGGREGATE:
                AbstractAssignOperator aao = (AbstractAssignOperator) op;
                result.addAll(aao.getExpressions());
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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        }
        return result;
    }

    public static Mutable<ILogicalExpression> getExpressionOf(Mutable<ILogicalOperator> opRef, LogicalVariable lv) {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        switch (op.getOperatorTag()) {
            case AGGREGATE:
            case ASSIGN:
            case RUNNINGAGGREGATE:
                AbstractAssignOperator aao = (AbstractAssignOperator) op;
                if (!aao.getVariables().contains(lv)) {
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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        }
        return null;
    }

    public static Mutable<ILogicalOperator> findProducerOf(Mutable<ILogicalOperator> opRef, LogicalVariable lv) {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        switch (op.getOperatorTag()) {
            case AGGREGATE:
            case ASSIGN:
            case RUNNINGAGGREGATE:
                AbstractAssignOperator aao = (AbstractAssignOperator) op;
                if (aao.getVariables().contains(lv)) {
                    return opRef;
                }
                for (Mutable<ILogicalOperator> input : op.getInputs()) {
                    Mutable<ILogicalOperator> opInput = findProducerOf(input, lv);
                    if (opInput != null) {
                        return opInput;
                    }
                }
                break;
            case DATASOURCESCAN:
            case UNNEST:
            case UNNEST_MAP:
                AbstractScanOperator aso = (AbstractScanOperator) op;
                if (aso.getVariables().contains(lv)) {
                    return opRef;
                }
                for (Mutable<ILogicalOperator> input : op.getInputs()) {
                    Mutable<ILogicalOperator> opInput = findProducerOf(input, lv);
                    if (opInput != null) {
                        return opInput;
                    }
                }
                break;
            case EMPTYTUPLESOURCE:
            case NESTEDTUPLESOURCE:
                return null;
            case CLUSTER:
            case DISTINCT:
            case DISTRIBUTE_RESULT:
            case EXCHANGE:
            case EXTENSION_OPERATOR:
            case GROUP:
            case INDEX_INSERT_DELETE:
            case INNERJOIN:
            case INSERT_DELETE:
            case LEFTOUTERJOIN:
            case LIMIT:
            case ORDER:
            case PARTITIONINGSPLIT:
            case PROJECT:
            case REPLICATE:
            case SCRIPT:
            case SELECT:
            case SINK:
            case SUBPLAN:
            case UNIONALL:
            case UPDATE:
            case WRITE:
            case WRITE_RESULT:
            default:
                // Skip operators and go look at input.
                for (Mutable<ILogicalOperator> input : op.getInputs()) {
                    Mutable<ILogicalOperator> opInput = findProducerOf(input, lv);
                    if (opInput != null) {
                        return opInput;
                    }
                }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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    }

    @Override
    public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
        // Check if aggregate function.
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.AGGREGATE) {
            return false;
        }
        AggregateOperator aggregate = (AggregateOperator) op;

        Mutable<ILogicalExpression> mutableLogicalExpression = aggregate.getExpressions().get(0);
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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    }

    @Override
    public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context)
            throws AlgebricksException {
        AbstractLogicalOperator op1 = (AbstractLogicalOperator) opRef.getValue();
        if (!op1.isMap()) {
            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
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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    public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) {
        return false;
    }

    public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.SUBPLAN) {
            return false;
        }
        SubplanOperator subplan = (SubplanOperator) op;

        // AGGREGATE($v2, sequence(%expression($v1)) )
        AbstractLogicalOperator subplanOp1 = (AbstractLogicalOperator) subplan.getNestedPlans().get(0).getRoots()
                .get(0).getValue();
        if (subplanOp1.getOperatorTag() != LogicalOperatorTag.AGGREGATE) {
            return false;
        }
        AggregateOperator aggregate = (AggregateOperator) subplanOp1;

        // Check to see if the expression is a function and op:sequence.
        ILogicalExpression logicalExpression1 = (ILogicalExpression) aggregate.getExpressions().get(0).getValue();
        if (logicalExpression1.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
            return false;
        }
        AbstractFunctionCallExpression functionCall1 = (AbstractFunctionCallExpression) logicalExpression1;
        if (!functionCall1.getFunctionIdentifier().equals(BuiltinOperators.SEQUENCE.getFunctionIdentifier())) {
            return false;
        }

        Mutable<ILogicalExpression> lvm1 = ExpressionToolbox.findVariableExpression(aggregate.getExpressions().get(0));
        if (lvm1 == null) {
            return false;
        }
        VariableReferenceExpression vre1 = (VariableReferenceExpression) lvm1.getValue();

        // UNNEST($v1, iterate($v0) )
        AbstractLogicalOperator subplanOp2 = (AbstractLogicalOperator) subplanOp1.getInputs().get(0).getValue();
        if (subplanOp2.getOperatorTag() != LogicalOperatorTag.UNNEST) {
            return false;
        }
        UnnestOperator subplanUnnest = (UnnestOperator) subplanOp2;

        // Check to see if the expression is the iterate operator.
        ILogicalExpression logicalExpression2 = (ILogicalExpression) subplanUnnest.getExpressionRef().getValue();
        if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
            return false;
        }
        AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
        if (!functionCall2.getFunctionIdentifier().equals(BuiltinOperators.ITERATE.getFunctionIdentifier())) {
            return false;
        }

        if (subplanUnnest.getVariable() != vre1.getVariableReference()) {
            return false;
        }
        Mutable<ILogicalExpression> lvm2 = ExpressionToolbox.findVariableExpression(subplanUnnest.getExpressionRef());
        if (lvm2 == null) {
            return false;
        }
        VariableReferenceExpression vre2 = (VariableReferenceExpression) lvm2.getValue();

        // NESTEDTUPLESOURCE
        AbstractLogicalOperator subplanOp3 = (AbstractLogicalOperator) subplanOp2.getInputs().get(0).getValue();
        if (subplanOp3.getOperatorTag() != LogicalOperatorTag.NESTEDTUPLESOURCE) {
            return false;
        }

        // Ensure input is from a UNNEST operator.
        AbstractLogicalOperator subplanInput = (AbstractLogicalOperator) subplan.getInputs().get(0).getValue();
        if (subplanInput.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
            return false;
        }
        AssignOperator assign = (AssignOperator) subplanInput;
        if (!assign.getVariables().contains(vre2.getVariableReference())) {
            return false;
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