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

Example 76 with AssignOperator

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

the class SqlppExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(IndependentSubquery independentSubquery, Mutable<ILogicalOperator> tupleSource) throws CompilationException {
    Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(independentSubquery.getExpr(), tupleSource);
    LogicalVariable var = context.newVar();
    AssignOperator assignOp = new AssignOperator(var, new MutableObject<ILogicalExpression>(eo.first));
    assignOp.getInputs().add(eo.second);
    return new Pair<>(assignOp, var);
}

Example 77 with AssignOperator

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

the class SqlppExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(JoinClause joinClause, Mutable<ILogicalOperator> inputRef) throws CompilationException {
    Mutable<ILogicalOperator> leftInputRef = uncorrelatedLeftBranchStack.pop();
    if (joinClause.getJoinType() == JoinType.INNER) {
        Pair<ILogicalOperator, LogicalVariable> rightBranch = generateUnnestForBinaryCorrelateRightBranch(joinClause, inputRef, true);
        // A join operator with condition TRUE.
        AbstractBinaryJoinOperator joinOperator = new InnerJoinOperator(new MutableObject<ILogicalExpression>(ConstantExpression.TRUE), leftInputRef, new MutableObject<ILogicalOperator>(rightBranch.first));
        Mutable<ILogicalOperator> joinOpRef = new MutableObject<>(joinOperator);
        // Add an additional filter operator.
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> conditionExprOpPair = langExprToAlgExpression(joinClause.getConditionExpression(), joinOpRef);
        SelectOperator filter = new SelectOperator(new MutableObject<ILogicalExpression>(conditionExprOpPair.first), false, null);
        filter.getInputs().add(conditionExprOpPair.second);
        return new Pair<>(filter, rightBranch.second);
    } else {
        // Creates a subplan operator.
        SubplanOperator subplanOp = new SubplanOperator();
        Mutable<ILogicalOperator> ntsRef = new MutableObject<>(new NestedTupleSourceOperator(new MutableObject<ILogicalOperator>(subplanOp)));
        subplanOp.getInputs().add(leftInputRef);
        // Enters the translation for a subplan.
        context.enterSubplan();
        // Adds an unnest operator to unnest to right expression.
        Pair<ILogicalOperator, LogicalVariable> rightBranch = generateUnnestForBinaryCorrelateRightBranch(joinClause, ntsRef, true);
        AbstractUnnestNonMapOperator rightUnnestOp = (AbstractUnnestNonMapOperator) rightBranch.first;
        // Adds an additional filter operator for the join condition.
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> conditionExprOpPair = langExprToAlgExpression(joinClause.getConditionExpression(), new MutableObject<ILogicalOperator>(rightUnnestOp));
        SelectOperator filter = new SelectOperator(new MutableObject<ILogicalExpression>(conditionExprOpPair.first), false, null);
        filter.getInputs().add(conditionExprOpPair.second);
        ILogicalOperator currentTopOp = filter;
        LogicalVariable varToListify;
        boolean hasRightPosVar = rightUnnestOp.getPositionalVariable() != null;
        if (hasRightPosVar) {
            // Creates record to get correlation between the two aggregate variables.
            ScalarFunctionCallExpression recordCreationFunc = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.CLOSED_RECORD_CONSTRUCTOR), // Field name for the listified right unnest var.
            new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AString("unnestvar")))), // The listified right unnest var
            new MutableObject<ILogicalExpression>(new VariableReferenceExpression(rightUnnestOp.getVariable())), // Field name for the listified right unnest positional var.
            new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AString("posvar")))), // The listified right unnest positional var.
            new MutableObject<ILogicalExpression>(new VariableReferenceExpression(rightUnnestOp.getPositionalVariable())));
            // Assigns the record constructor function to a record variable.
            LogicalVariable recordVar = context.newVar();
            AssignOperator assignOp = new AssignOperator(recordVar, new MutableObject<ILogicalExpression>(recordCreationFunc));
            assignOp.getInputs().add(new MutableObject<ILogicalOperator>(currentTopOp));
            // Sets currentTopOp and varToListify for later usages.
            currentTopOp = assignOp;
            varToListify = recordVar;
        } else {
            varToListify = rightUnnestOp.getVariable();
        }
        // Adds an aggregate operator to listfy unnest variables.
        AggregateFunctionCallExpression fListify = BuiltinFunctions.makeAggregateFunctionExpression(BuiltinFunctions.LISTIFY, mkSingletonArrayList(new MutableObject<ILogicalExpression>(new VariableReferenceExpression(varToListify))));
        LogicalVariable aggVar = context.newSubplanOutputVar();
        AggregateOperator aggOp = new AggregateOperator(mkSingletonArrayList(aggVar), mkSingletonArrayList(new MutableObject<ILogicalExpression>(fListify)));
        aggOp.getInputs().add(new MutableObject<ILogicalOperator>(currentTopOp));
        // Exits the translation of a subplan.
        context.exitSubplan();
        // Sets the nested subplan of the subplan operator.
        ILogicalPlan subplan = new ALogicalPlanImpl(new MutableObject<ILogicalOperator>(aggOp));
        subplanOp.getNestedPlans().add(subplan);
        // Outer unnest the aggregated var from the subplan.
        LogicalVariable outerUnnestVar = context.newVar();
        LeftOuterUnnestOperator outerUnnestOp = new LeftOuterUnnestOperator(outerUnnestVar, new MutableObject<ILogicalExpression>(makeUnnestExpression(new VariableReferenceExpression(aggVar))));
        outerUnnestOp.getInputs().add(new MutableObject<ILogicalOperator>(subplanOp));
        currentTopOp = outerUnnestOp;
        if (hasRightPosVar) {
            ScalarFunctionCallExpression fieldAccessForRightUnnestVar = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_INDEX), new MutableObject<ILogicalExpression>(new VariableReferenceExpression(outerUnnestVar)), new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AInt32(0)))));
            ScalarFunctionCallExpression fieldAccessForRightPosVar = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_INDEX), new MutableObject<ILogicalExpression>(new VariableReferenceExpression(outerUnnestVar)), new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AInt32(1)))));
            // Creates variables for assign.
            LogicalVariable rightUnnestVar = context.newVar();
            LogicalVariable rightPosVar = context.newVar();
            // Relate the assigned variables to the variable expression in AST.
            context.setVar(joinClause.getRightVariable(), rightUnnestVar);
            context.setVar(joinClause.getPositionalVariable(), rightPosVar);
            // Varaibles to assign.
            List<LogicalVariable> assignVars = new ArrayList<>();
            assignVars.add(rightUnnestVar);
            assignVars.add(rightPosVar);
            // Expressions for assign.
            List<Mutable<ILogicalExpression>> assignExprs = new ArrayList<>();
            assignExprs.add(new MutableObject<ILogicalExpression>(fieldAccessForRightUnnestVar));
            assignExprs.add(new MutableObject<ILogicalExpression>(fieldAccessForRightPosVar));
            // Creates the assign operator.
            AssignOperator assignOp = new AssignOperator(assignVars, assignExprs);
            assignOp.getInputs().add(new MutableObject<ILogicalOperator>(currentTopOp));
            currentTopOp = assignOp;
        } else {
            context.setVar(joinClause.getRightVariable(), outerUnnestVar);
        }
        return new Pair<>(currentTopOp, null);
    }
}

Example 78 with AssignOperator

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

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(GroupbyClause gc, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    Mutable<ILogicalOperator> topOp = tupSource;
    if (gc.hasGroupVar()) {
        List<Pair<Expression, Identifier>> groupFieldList = gc.getGroupFieldList();
        List<Mutable<ILogicalExpression>> groupRecordConstructorArgList = new ArrayList<>();
        for (Pair<Expression, Identifier> groupField : groupFieldList) {
            ILogicalExpression groupFieldNameExpr = langExprToAlgExpression(new LiteralExpr(new StringLiteral(groupField.second.getValue())), topOp).first;
            groupRecordConstructorArgList.add(new MutableObject<>(groupFieldNameExpr));
            ILogicalExpression groupFieldExpr = langExprToAlgExpression(groupField.first, topOp).first;
            groupRecordConstructorArgList.add(new MutableObject<>(groupFieldExpr));
        }
        LogicalVariable groupVar = context.newVarFromExpression(gc.getGroupVar());
        AssignOperator groupVarAssignOp = new AssignOperator(groupVar, new MutableObject<>(new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.OPEN_RECORD_CONSTRUCTOR), groupRecordConstructorArgList)));
        groupVarAssignOp.getInputs().add(topOp);
        topOp = new MutableObject<>(groupVarAssignOp);
    }
    GroupByOperator gOp = new GroupByOperator();
    for (GbyVariableExpressionPair ve : gc.getGbyPairList()) {
        VariableExpr vexpr = ve.getVar();
        LogicalVariable v = vexpr == null ? context.newVar() : context.newVarFromExpression(vexpr);
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(ve.getExpr(), topOp);
        gOp.addGbyExpression(v, eo.first);
        topOp = eo.second;
    }
    for (GbyVariableExpressionPair ve : gc.getDecorPairList()) {
        VariableExpr vexpr = ve.getVar();
        LogicalVariable v = vexpr == null ? context.newVar() : context.newVarFromExpression(vexpr);
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(ve.getExpr(), topOp);
        gOp.addDecorExpression(v, eo.first);
        topOp = eo.second;
    }
    gOp.getInputs().add(topOp);
    for (Entry<Expression, VariableExpr> entry : gc.getWithVarMap().entrySet()) {
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> listifyInput = langExprToAlgExpression(entry.getKey(), new MutableObject<>(new NestedTupleSourceOperator(new MutableObject<>(gOp))));
        List<Mutable<ILogicalExpression>> flArgs = new ArrayList<>(1);
        flArgs.add(new MutableObject<>(listifyInput.first));
        AggregateFunctionCallExpression fListify = BuiltinFunctions.makeAggregateFunctionExpression(BuiltinFunctions.LISTIFY, flArgs);
        LogicalVariable aggVar = context.newVar();
        AggregateOperator agg = new AggregateOperator(mkSingletonArrayList(aggVar), mkSingletonArrayList(new MutableObject<>(fListify)));
        agg.getInputs().add(listifyInput.second);
        ILogicalPlan plan = new ALogicalPlanImpl(new MutableObject<>(agg));
        gOp.getNestedPlans().add(plan);
        // Hide the variable that was part of the "with", replacing it with
        // the one bound by the aggregation op.
        context.setVar(entry.getValue(), aggVar);
    }
    gOp.setGroupAll(gc.isGroupAll());
    gOp.getAnnotations().put(OperatorAnnotations.USE_HASH_GROUP_BY, gc.hasHashGroupByHint());
    return new Pair<>(gOp, null);
}

Example 79 with AssignOperator

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

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(UnaryExpr u, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    Expression expr = u.getExpr();
    Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(expr, tupSource);
    LogicalVariable v1 = context.newVar();
    AssignOperator a;
    switch(u.getExprType()) {
        case POSITIVE:
            a = new AssignOperator(v1, new MutableObject<>(eo.first));
            break;
        case NEGATIVE:
            AbstractFunctionCallExpression m = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.NUMERIC_UNARY_MINUS));
            m.getArguments().add(new MutableObject<>(eo.first));
            a = new AssignOperator(v1, new MutableObject<>(m));
            break;
        case EXISTS:
            a = processExists(eo.first, v1, false);
            break;
        case NOT_EXISTS:
            a = processExists(eo.first, v1, true);
            break;
        default:
            throw new CompilationException("Unsupported operator: " + u);
    }
    a.getInputs().add(eo.second);
    return new Pair<>(a, v1);
}

Example 80 with AssignOperator

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

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(LetClause lc, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    LogicalVariable v;
    ILogicalOperator returnedOp;
    if (lc.getBindingExpr().getKind() == Kind.VARIABLE_EXPRESSION) {
        v = context.newVarFromExpression(lc.getVarExpr());
        LogicalVariable prev = context.getVar(((VariableExpr) lc.getBindingExpr()).getVar().getId());
        returnedOp = new AssignOperator(v, new MutableObject<>(new VariableReferenceExpression(prev)));
        returnedOp.getInputs().add(tupSource);
    } else {
        v = context.newVarFromExpression(lc.getVarExpr());
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(lc.getBindingExpr(), tupSource);
        returnedOp = new AssignOperator(v, new MutableObject<>(eo.first));
        returnedOp.getInputs().add(eo.second);
    }
    return new Pair<>(returnedOp, v);
}