Examples of AbstractLogicalOperator

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) {
        boolean operatorChanged = false;
        // Check if assign is for treat.
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
            return false;
        }
        AssignOperator assignTreat = (AssignOperator) op;

        // Check to see if the expression is a function and treat.
        ILogicalExpression logicalExpression11 = (ILogicalExpression) assignTreat.getExpressions().get(0).getValue();
        if (logicalExpression11.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
            return false;
        }
        AbstractFunctionCallExpression functionTreat = (AbstractFunctionCallExpression) logicalExpression11;
        if (!functionTreat.getFunctionIdentifier().equals(BuiltinOperators.TREAT.getFunctionIdentifier())) {
            return false;
        }

        // Find the variable id used as the parameter.
        ILogicalExpression treatArg1 = (ILogicalExpression) functionTreat.getArguments().get(0).getValue();
        if (treatArg1.getExpressionTag() != LogicalExpressionTag.VARIABLE) {
            return false;
        }
        VariableReferenceExpression variableExpression = (VariableReferenceExpression) treatArg1;
        int variableId = variableExpression.getVariableReference().getId();

        // Get type to check against constant.
        ILogicalExpression treatArg2 = (ILogicalExpression) functionTreat.getArguments().get(1).getValue();
        if (treatArg2.getExpressionTag() != LogicalExpressionTag.CONSTANT) {
            return false;
        }
        TaggedValuePointable tvp = (TaggedValuePointable) TaggedValuePointable.FACTORY.createPointable();
        getConstantAsPointable((ConstantExpression) treatArg2, tvp);

        IntegerPointable pTypeCode = (IntegerPointable) IntegerPointable.FACTORY.createPointable();
        tvp.getValue(pTypeCode);
        SequenceType sType = dCtx.lookupSequenceType(pTypeCode.getInteger());

        AbstractLogicalOperator op2 = (AbstractLogicalOperator) assignTreat.getInputs().get(0).getValue();
        if (op2.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
            return false;
        }
        AssignOperator assignConstant = (AssignOperator) op2;

        if (variableId == assignConstant.getVariables().get(0).getId()) {
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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 op = (AbstractLogicalOperator) opRef.getValue();

        if (op.getOperatorTag() != LogicalOperatorTag.INNERJOIN) {
            return false;
        }
        AbstractBinaryJoinOperator join = (AbstractBinaryJoinOperator) op;

        ILogicalExpression expr = join.getCondition().getValue();
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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* </pre>
*/
public class EliminateUnnestAggregateSubplanRule implements IAlgebraicRewriteRule {
    @Override
    public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) throws AlgebricksException {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.UNNEST) {
            return false;
        }
        UnnestOperator unnest = (UnnestOperator) op;

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

        AbstractLogicalOperator op2 = (AbstractLogicalOperator) unnest.getInputs().get(0).getValue();
        if (op2.getOperatorTag() != LogicalOperatorTag.SUBPLAN) {
            return false;
        }
        SubplanOperator subplan = (SubplanOperator) op2;

        AbstractLogicalOperator subplanOp = (AbstractLogicalOperator) subplan.getNestedPlans().get(0).getRoots().get(0)
                .getValue();
        if (subplanOp.getOperatorTag() != LogicalOperatorTag.AGGREGATE) {
            return false;
        }
        AggregateOperator aggregate = (AggregateOperator) subplanOp;

        // Check to see if the expression is a function and op:sequence.
        ILogicalExpression logicalExpression2 = (ILogicalExpression) aggregate.getExpressions().get(0).getValue();
        if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
            return false;
        }
        AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
        if (!functionCall2.getFunctionIdentifier().equals(BuiltinOperators.SEQUENCE.getFunctionIdentifier())) {
            return false;
        }

        // Make inline the arguments for the subplan.
        AbstractLogicalOperator subplanEnd = OperatorToolbox.findLastSubplanOperator(subplanOp);
        int count = 0;
        for (Mutable<ILogicalOperator> input : subplan.getInputs()) {
            subplanEnd.getInputs().get(count++).setValue(input.getValue());
        }

        // Replace search string with assign.
        Mutable<ILogicalExpression> assignExpression = functionCall2.getArguments().get(0);
        LogicalVariable assignVariable = context.newVar();
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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*/
public class ConsolidateUnnestsRule extends AbstractUsedVariablesProcessingRule {

    protected boolean processOperator(Mutable<ILogicalOperator> opRef, IOptimizationContext context)
            throws AlgebricksException {
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.UNNEST) {
            return false;
        }
        UnnestOperator unnest1 = (UnnestOperator) op;

        AbstractLogicalOperator op2 = (AbstractLogicalOperator) unnest1.getInputs().get(0).getValue();
        if (op2.getOperatorTag() != LogicalOperatorTag.UNNEST) {
            return false;
        }
        UnnestOperator unnest2 = (UnnestOperator) op2;

        if (!usedVariables.contains(unnest2.getVariable())) {
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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) {
        boolean operatorChanged = false;
        // Do not process empty or nested tuple source.
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() == LogicalOperatorTag.EMPTYTUPLESOURCE
                || op.getOperatorTag() == LogicalOperatorTag.NESTEDTUPLESOURCE) {
            return false;
        }

        // Initialization.
        VXQueryOptimizationContext vxqueryContext = (VXQueryOptimizationContext) context;
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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        return operatorChanged;
    }

    private int getOperatorSortDistinctNodesAscOrAtomicsArgumentVariableId(Mutable<ILogicalOperator> opRef) {
        // Check if assign is for sort-distinct-nodes-asc-or-atomics.
        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
            return 0;
        }
        AssignOperator assign = (AssignOperator) op;

        // Check to see if the expression is a function and
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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     * @param vxqueryContext
     * @return
     */
    private HashMap<Integer, DocumentOrder> getProducerDocumentOrderVariableMap(ILogicalOperator op,
            VXQueryOptimizationContext vxqueryContext) {
        AbstractLogicalOperator producerOp = (AbstractLogicalOperator) op.getInputs().get(0).getValue();
        switch (producerOp.getOperatorTag()) {
            case EMPTYTUPLESOURCE:
                return new HashMap<Integer, DocumentOrder>();
            case NESTEDTUPLESOURCE:
                NestedTupleSourceOperator nestedTuplesource = (NestedTupleSourceOperator) producerOp;
                return getProducerDocumentOrderVariableMap(nestedTuplesource.getDataSourceReference().getValue(),
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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     * @param vxqueryContext
     * @return
     */
    private HashMap<Integer, UniqueNodes> getProducerUniqueNodesVariableMap(ILogicalOperator op,
            VXQueryOptimizationContext vxqueryContext) {
        AbstractLogicalOperator producerOp = (AbstractLogicalOperator) op.getInputs().get(0).getValue();
        switch (producerOp.getOperatorTag()) {
            case EMPTYTUPLESOURCE:
                return new HashMap<Integer, UniqueNodes>();
            case NESTEDTUPLESOURCE:
                NestedTupleSourceOperator nestedTuplesource = (NestedTupleSourceOperator) producerOp;
                return getProducerUniqueNodesVariableMap(nestedTuplesource.getDataSourceReference().getValue(),
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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                break;
            case SUBPLAN:
                // Find the last operator to set a variable and call this function again.
                SubplanOperator subplan = (SubplanOperator) op;
                for (int index = 0; index < subplan.getNestedPlans().size(); index++) {
                    AbstractLogicalOperator lastOperator = (AbstractLogicalOperator) subplan.getNestedPlans().get(index)
                            .getRoots().get(0).getValue();
                    updateVariableMap(lastOperator, cardinalityVariable, documentOrderVariables, uniqueNodesVariables,
                            vxqueryContext);
                }
                break;
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator

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     * Get the constant value for the collection. Return null for not a collection.
     */
    protected String getCollectionName(Mutable<ILogicalOperator> opRef) throws AlgebricksException {
        VXQueryConstantValue constantValue;

        AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue();
        if (op.getOperatorTag() != LogicalOperatorTag.UNNEST) {
            return null;
        }
        UnnestOperator unnest = (UnnestOperator) op;

        // Check if assign is for fn:Collection.
        AbstractLogicalOperator op2 = (AbstractLogicalOperator) unnest.getInputs().get(0).getValue();
        if (op2.getOperatorTag() != LogicalOperatorTag.ASSIGN) {
            return null;
        }
        AssignOperator assign = (AssignOperator) op2;

        // Check to see if the expression is a function and fn:Collection.
        ILogicalExpression logicalExpression = (ILogicalExpression) assign.getExpressions().get(0).getValue();
        if (logicalExpression.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
            return null;
        }
        AbstractFunctionCallExpression functionCall = (AbstractFunctionCallExpression) logicalExpression;
        if (!functionCall.getFunctionIdentifier().equals(BuiltinFunctions.FN_COLLECTION_1.getFunctionIdentifier())) {
            return null;
        }

        // Get the string assigned to the collection function.
        AbstractLogicalOperator op3 = (AbstractLogicalOperator) assign.getInputs().get(0).getValue();
        if (op3.getOperatorTag() == LogicalOperatorTag.ASSIGN) {
            AssignOperator assign2 = (AssignOperator) op3;

            // Check to see if the expression is a constant expression and type string.
            ILogicalExpression logicalExpression2 = (ILogicalExpression) assign2.getExpressions().get(0).getValue();
            if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.CONSTANT) {
                return null;
            }
            ConstantExpression constantExpression = (ConstantExpression) logicalExpression2;
            constantValue = (VXQueryConstantValue) constantExpression.getValue();
            if (constantValue.getType() != SequenceType.create(BuiltinTypeRegistry.XS_STRING, Quantifier.QUANT_ONE)) {
                return null;
            }
        } else if (op3.getOperatorTag() == LogicalOperatorTag.EMPTYTUPLESOURCE) {
            ILogicalExpression logicalExpression2 = (ILogicalExpression) functionCall.getArguments().get(0).getValue();
            if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
                return null;
            }
            AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
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