Examples of UnnestOperator

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

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                    for (ForVarDeclNode fvdNode : fcNode.getVariables()) {
                        ILogicalExpression seq = vre(translateExpression(fvdNode.getSequence(), tCtx));
                        tCtx.pushVariableScope();
                        LogicalVariable forLVar = newLogicalVariable();
                        LogicalVariable posLVar = fvdNode.getPosVar() != null ? newLogicalVariable() : null;
                        UnnestOperator unnest = new UnnestOperator(forLVar,
                                mutable(ufce(BuiltinOperators.ITERATE, seq)), posLVar, null);
                        SequenceType forVarType = SequenceType.create(AnyItemType.INSTANCE, Quantifier.QUANT_ONE);
                        if (fvdNode.getType() != null) {
                            forVarType = createSequenceType(fvdNode.getType());
                        }
                        XQueryVariable forVar = new XQueryVariable(createQName(fvdNode.getForVar()), forVarType,
                                forLVar);
                        tCtx.varScope.registerVariable(forVar);
                        XQueryVariable posVar = null;
                        if (fvdNode.getPosVar() != null) {
                            posVar = new XQueryVariable(createQName(fvdNode.getPosVar()), SequenceType.create(
                                    BuiltinTypeRegistry.XS_INTEGER, Quantifier.QUANT_ONE), posLVar);
                            tCtx.varScope.registerVariable(posVar);
                        }
                        assert fvdNode.getScoreVar() == null;
                        unnest.getInputs().add(mutable(tCtx.op));
                        tCtx.op = unnest;
                        ++pushCount;
                    }
                    break;
                }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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        LogicalVariable lastLVar = createAssignment(sfce(BuiltinFunctions.FN_COUNT_1, vre(seqLVar)), tCtx);
        tCtx.varScope.registerVariable(new XQueryVariable(XMLQueryCompilerConstants.LAST_VAR_NAME, SequenceType.create(
                BuiltinTypeRegistry.XS_INTEGER, Quantifier.QUANT_ONE), lastLVar));
        LogicalVariable forLVar = newLogicalVariable();
        LogicalVariable posLVar = newLogicalVariable();
        UnnestOperator unnest = new UnnestOperator(forLVar, mutable(ufce(BuiltinOperators.ITERATE, vre(seqLVar))),
                posLVar, null);
        SequenceType forVarType = SequenceType.create(AnyItemType.INSTANCE, Quantifier.QUANT_ONE);
        XQueryVariable forVar = new XQueryVariable(XMLQueryCompilerConstants.DOT_VAR_NAME, forVarType, forLVar);
        tCtx.varScope.registerVariable(forVar);
        XQueryVariable posVar = new XQueryVariable(XMLQueryCompilerConstants.POS_VAR_NAME, SequenceType.create(
                BuiltinTypeRegistry.XS_INTEGER, Quantifier.QUANT_ONE), posLVar);
        tCtx.varScope.registerVariable(posVar);
        unnest.getInputs().add(mutable(tCtx.op));
        tCtx.op = unnest;
    }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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        QueryBodyNode qbn = moduleNode.getQueryBody();
        ASTNode queryBody = qbn.getExpression();
        TranslationContext tCtx = new TranslationContext(null, new EmptyTupleSourceOperator());
        LogicalVariable lVar = translateExpression(queryBody, tCtx);
        LogicalVariable iLVar = newLogicalVariable();
        UnnestOperator unnest = new UnnestOperator(iLVar, mutable(ufce(BuiltinOperators.ITERATE, vre(lVar))));
        unnest.getInputs().add(mutable(tCtx.op));
        List<Mutable<ILogicalExpression>> exprs = new ArrayList<Mutable<ILogicalExpression>>();
        exprs.add(mutable(vre(iLVar)));
        WriteOperator op = new WriteOperator(exprs, new QueryResultDataSink(ccb.getResultFileSplits()));
        op.getInputs().add(mutable(unnest));
        ALogicalPlanImpl lp = new ALogicalPlanImpl(mutable(op));
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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            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())) {
            // Check to see if the unnest2 expression has a scalar implementation.
            ILogicalExpression logicalExpression2 = (ILogicalExpression) unnest2.getExpressionRef().getValue();
            if (logicalExpression2.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) {
                return false;
            }
            AbstractFunctionCallExpression functionCall2 = (AbstractFunctionCallExpression) logicalExpression2;
            Function functionInfo2 = (Function) functionCall2.getFunctionInfo();
            if (!functionInfo2.hasScalarEvaluatorFactory()) {
                return false;
            }

            // Find unnest2 variable in unnest1
            Mutable<ILogicalExpression> unnest1Arg = ExpressionToolbox.findVariableExpression(
                    unnest1.getExpressionRef(), unnest2.getVariable());
            if (unnest1Arg == null) {
                return false;
            }

            // Replace unnest2 expression in unnest1
            ScalarFunctionCallExpression child = new ScalarFunctionCallExpression(functionInfo2,
                    functionCall2.getArguments());
            unnest1Arg.setValue(child);

            // Move input for unnest2 into unnest1
            unnest1.getInputs().clear();
            unnest1.getInputs().addAll(unnest2.getInputs());
            return true;
        }
        return false;
    }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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        QueryBodyNode qbn = moduleNode.getQueryBody();
        ASTNode queryBody = qbn.getExpression();
        TranslationContext tCtx = new TranslationContext(null, new EmptyTupleSourceOperator());
        LogicalVariable lVar = translateExpression(queryBody, tCtx);
        LogicalVariable iLVar = newLogicalVariable();
        UnnestOperator unnest = new UnnestOperator(iLVar, mutable(ufce(BuiltinOperators.ITERATE, vre(lVar))));
        unnest.getInputs().add(mutable(tCtx.op));
        List<Mutable<ILogicalExpression>> exprs = new ArrayList<Mutable<ILogicalExpression>>();
        exprs.add(mutable(vre(iLVar)));
        QueryResultSetDataSink sink = new QueryResultSetDataSink(ccb.getResultSetId(), null);
        DistributeResultOperator op = new DistributeResultOperator(exprs, sink);
        op.getInputs().add(mutable(unnest));
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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        int pushCount = 0;
        for (QuantifiedVarDeclNode qvdNode : qeNode.getVariables()) {
            ILogicalExpression seq = vre(translateExpression(qvdNode.getSequence(), tCtx));
            tCtx.pushVariableScope();
            LogicalVariable forLVar = newLogicalVariable();
            UnnestOperator unnest = new UnnestOperator(forLVar, mutable(ufce(BuiltinOperators.ITERATE, seq)));
            SequenceType forVarType = SequenceType.create(AnyItemType.INSTANCE, Quantifier.QUANT_ONE);
            if (qvdNode.getType() != null) {
                forVarType = createSequenceType(qvdNode.getType());
            }
            XQueryVariable forVar = new XQueryVariable(createQName(qvdNode.getVariable()), forVarType, forLVar);
            tCtx.varScope.registerVariable(forVar);
            unnest.getInputs().add(mutable(tCtx.op));
            tCtx.op = unnest;
            ++pushCount;
        }
        ILogicalExpression satExpr = sfce(BuiltinFunctions.FN_BOOLEAN_1,
                vre(translateExpression(qeNode.getSatisfiesExpr(), tCtx)));
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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                    for (ForVarDeclNode fvdNode : fcNode.getVariables()) {
                        ILogicalExpression seq = vre(translateExpression(fvdNode.getSequence(), tCtx));
                        tCtx.pushVariableScope();
                        LogicalVariable forLVar = newLogicalVariable();
                        LogicalVariable posLVar = fvdNode.getPosVar() != null ? newLogicalVariable() : null;
                        UnnestOperator unnest = new UnnestOperator(forLVar,
                                mutable(ufce(BuiltinOperators.ITERATE, seq)), posLVar, BuiltinTypeRegistry.XS_INTEGER,
                                new VXQueryPositionWriter());
                        SequenceType forVarType = SequenceType.create(AnyItemType.INSTANCE, Quantifier.QUANT_ONE);
                        if (fvdNode.getType() != null) {
                            forVarType = createSequenceType(fvdNode.getType());
                        }
                        XQueryVariable forVar = new XQueryVariable(createQName(fvdNode.getForVar()), forVarType,
                                forLVar);
                        tCtx.varScope.registerVariable(forVar);
                        XQueryVariable posVar = null;
                        if (fvdNode.getPosVar() != null) {
                            posVar = new XQueryVariable(createQName(fvdNode.getPosVar()), SequenceType.create(
                                    BuiltinTypeRegistry.XS_INTEGER, Quantifier.QUANT_ONE), posLVar);
                            tCtx.varScope.registerVariable(posVar);
                        }
                        assert fvdNode.getScoreVar() == null;
                        unnest.getInputs().add(mutable(tCtx.op));
                        tCtx.op = unnest;
                        ++pushCount;
                    }
                    break;
                }
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Examples of edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator

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        LogicalVariable lastLVar = createAssignment(sfce(BuiltinFunctions.FN_COUNT_1, vre(seqLVar)), tCtx);
        tCtx.varScope.registerVariable(new XQueryVariable(XMLQueryCompilerConstants.LAST_VAR_NAME, SequenceType.create(
                BuiltinTypeRegistry.XS_INTEGER, Quantifier.QUANT_ONE), lastLVar));
        LogicalVariable forLVar = newLogicalVariable();
        LogicalVariable posLVar = newLogicalVariable();
        UnnestOperator unnest = new UnnestOperator(forLVar, mutable(ufce(BuiltinOperators.ITERATE, vre(seqLVar))),
                posLVar, BuiltinTypeRegistry.XS_INTEGER, new VXQueryPositionWriter());
        SequenceType forVarType = SequenceType.create(AnyItemType.INSTANCE, Quantifier.QUANT_ONE);
        XQueryVariable forVar = new XQueryVariable(XMLQueryCompilerConstants.DOT_VAR_NAME, forVarType, forLVar);
        tCtx.varScope.registerVariable(forVar);
        SequenceType posVarType = SequenceType.create(BuiltinTypeRegistry.XS_INTEGER, Quantifier.QUANT_ONE);
        XQueryVariable posVar = new XQueryVariable(XMLQueryCompilerConstants.POS_VAR_NAME, posVarType, posLVar);
        tCtx.varScope.registerVariable(posVar);
        unnest.getInputs().add(mutable(tCtx.op));
        tCtx.op = unnest;
    }
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