Examples with ScalarFunctionCallExpression org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression used on opensource projects

Example 21 with ScalarFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression in project asterixdb by apache.

the class LangExpressionToPlanTranslator method processExists.

// Processes EXISTS and NOT EXISTS.
private AssignOperator processExists(ILogicalExpression inputExpr, LogicalVariable v1, boolean not) {
    AbstractFunctionCallExpression count = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.SCALAR_COUNT));
    count.getArguments().add(new MutableObject<>(inputExpr));
    AbstractFunctionCallExpression comparison = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(not ? BuiltinFunctions.EQ : BuiltinFunctions.NEQ));
    comparison.getArguments().add(new MutableObject<>(count));
    comparison.getArguments().add(new MutableObject<>(new ConstantExpression(new AsterixConstantValue(new AInt64(0L)))));
    return new AssignOperator(v1, new MutableObject<>(comparison));
}

Example 22 with ScalarFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression in project asterixdb by apache.

the class LangExpressionToPlanTranslator method translateSubscribeFeed.

private ILogicalOperator translateSubscribeFeed(CompiledSubscribeFeedStatement sfs, DatasetDataSource targetDatasource, LogicalVariable unnestVar, ILogicalOperator topOp, ArrayList<Mutable<ILogicalExpression>> exprs, LogicalVariable resVar, List<Mutable<ILogicalExpression>> varRefsForLoading, Mutable<ILogicalExpression> varRef, ILogicalOperator assign, List<String> additionalFilteringField, AssignOperator additionalFilteringAssign, List<Mutable<ILogicalExpression>> additionalFilteringExpressions) throws AlgebricksException {
    // if the feed is a change feed (i.e, performs different operations), we need to project op variable
    InsertDeleteUpsertOperator feedModificationOp;
    AssignOperator metaAndKeysAssign;
    List<LogicalVariable> metaAndKeysVars = null;
    List<Mutable<ILogicalExpression>> metaAndKeysExprs = null;
    List<Mutable<ILogicalExpression>> metaExpSingletonList = null;
    Feed feed = metadataProvider.findFeed(sfs.getDataverseName(), sfs.getFeedName());
    boolean isChangeFeed = ExternalDataUtils.isChangeFeed(feed.getAdapterConfiguration());
    boolean isUpsertFeed = ExternalDataUtils.isUpsertFeed(feed.getAdapterConfiguration());
    ProjectOperator project = (ProjectOperator) topOp;
    if (targetDatasource.getDataset().hasMetaPart() || isChangeFeed) {
        metaAndKeysVars = new ArrayList<>();
        metaAndKeysExprs = new ArrayList<>();
        if (targetDatasource.getDataset().hasMetaPart()) {
            // add the meta function
            IFunctionInfo finfoMeta = FunctionUtil.getFunctionInfo(BuiltinFunctions.META);
            ScalarFunctionCallExpression metaFunction = new ScalarFunctionCallExpression(finfoMeta, new MutableObject<>(new VariableReferenceExpression(unnestVar)));
            // create assign for the meta part
            LogicalVariable metaVar = context.newVar();
            metaExpSingletonList = new ArrayList<>(1);
            metaExpSingletonList.add(new MutableObject<>(new VariableReferenceExpression(metaVar)));
            metaAndKeysVars.add(metaVar);
            metaAndKeysExprs.add(new MutableObject<>(metaFunction));
            project.getVariables().add(metaVar);
        }
    }
    if (isChangeFeed) {
        varRefsForLoading.clear();
        for (Mutable<ILogicalExpression> assignExpr : exprs) {
            if (assignExpr.getValue().getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) {
                AbstractFunctionCallExpression funcCall = (AbstractFunctionCallExpression) assignExpr.getValue();
                funcCall.substituteVar(resVar, unnestVar);
                LogicalVariable pkVar = context.newVar();
                metaAndKeysVars.add(pkVar);
                metaAndKeysExprs.add(new MutableObject<>(assignExpr.getValue()));
                project.getVariables().add(pkVar);
                varRefsForLoading.add(new MutableObject<>(new VariableReferenceExpression(pkVar)));
            }
        }
        // A change feed, we don't need the assign to access PKs
        feedModificationOp = new InsertDeleteUpsertOperator(targetDatasource, varRef, varRefsForLoading, metaExpSingletonList, InsertDeleteUpsertOperator.Kind.UPSERT, false);
        // Create and add a new variable used for representing the original record
        feedModificationOp.setPrevRecordVar(context.newVar());
        feedModificationOp.setPrevRecordType(targetDatasource.getItemType());
        if (targetDatasource.getDataset().hasMetaPart()) {
            List<LogicalVariable> metaVars = new ArrayList<>();
            metaVars.add(context.newVar());
            feedModificationOp.setPrevAdditionalNonFilteringVars(metaVars);
            List<Object> metaTypes = new ArrayList<>();
            metaTypes.add(targetDatasource.getMetaItemType());
            feedModificationOp.setPrevAdditionalNonFilteringTypes(metaTypes);
        }
        if (additionalFilteringField != null) {
            feedModificationOp.setPrevFilterVar(context.newVar());
            feedModificationOp.setPrevFilterType(((ARecordType) targetDatasource.getItemType()).getFieldType(additionalFilteringField.get(0)));
            additionalFilteringAssign.getInputs().clear();
            additionalFilteringAssign.getInputs().add(assign.getInputs().get(0));
            feedModificationOp.getInputs().add(new MutableObject<>(additionalFilteringAssign));
        } else {
            feedModificationOp.getInputs().add(assign.getInputs().get(0));
        }
    } else {
        final InsertDeleteUpsertOperator.Kind opKind = isUpsertFeed ? InsertDeleteUpsertOperator.Kind.UPSERT : InsertDeleteUpsertOperator.Kind.INSERT;
        feedModificationOp = new InsertDeleteUpsertOperator(targetDatasource, varRef, varRefsForLoading, metaExpSingletonList, opKind, false);
        if (isUpsertFeed) {
            feedModificationOp.setPrevRecordVar(context.newVar());
            feedModificationOp.setPrevRecordType(targetDatasource.getItemType());
        }
        feedModificationOp.getInputs().add(new MutableObject<>(assign));
    }
    if (targetDatasource.getDataset().hasMetaPart() || isChangeFeed) {
        metaAndKeysAssign = new AssignOperator(metaAndKeysVars, metaAndKeysExprs);
        metaAndKeysAssign.getInputs().add(topOp.getInputs().get(0));
        topOp.getInputs().set(0, new MutableObject<>(metaAndKeysAssign));
    }
    feedModificationOp.setAdditionalFilteringExpressions(additionalFilteringExpressions);
    ILogicalOperator leafOperator = new DelegateOperator(new CommitOperator(true));
    leafOperator.getInputs().add(new MutableObject<>(feedModificationOp));
    return leafOperator;
}

Example 23 with ScalarFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression in project asterixdb by apache.

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(FieldAccessor fa, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    Pair<ILogicalExpression, Mutable<ILogicalOperator>> p = langExprToAlgExpression(fa.getExpr(), tupSource);
    LogicalVariable v = context.newVarFromExpression(fa);
    AbstractFunctionCallExpression fldAccess = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_NAME));
    fldAccess.getArguments().add(new MutableObject<>(p.first));
    ILogicalExpression faExpr = new ConstantExpression(new AsterixConstantValue(new AString(fa.getIdent().getValue())));
    fldAccess.getArguments().add(new MutableObject<>(faExpr));
    AssignOperator a = new AssignOperator(v, new MutableObject<>(fldAccess));
    a.getInputs().add(p.second);
    return new Pair<>(a, v);
}

Example 24 with ScalarFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression in project asterixdb by apache.

the class LangExpressionToPlanTranslator method createComparisonExpression.

protected AbstractFunctionCallExpression createComparisonExpression(OperatorType t) {
    FunctionIdentifier fi = operatorTypeToFunctionIdentifier(t);
    IFunctionInfo finfo = FunctionUtil.getFunctionInfo(fi);
    return new ScalarFunctionCallExpression(finfo);
}

Example 25 with ScalarFunctionCallExpression

use of org.apache.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression in project asterixdb by apache.

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(ListConstructor lc, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    FunctionIdentifier fid = (lc.getType() == ListConstructor.Type.ORDERED_LIST_CONSTRUCTOR) ? BuiltinFunctions.ORDERED_LIST_CONSTRUCTOR : BuiltinFunctions.UNORDERED_LIST_CONSTRUCTOR;
    AbstractFunctionCallExpression f = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(fid));
    LogicalVariable v1 = context.newVar();
    AssignOperator a = new AssignOperator(v1, new MutableObject<>(f));
    Mutable<ILogicalOperator> topOp = tupSource;
    for (Expression expr : lc.getExprList()) {
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> eo = langExprToAlgExpression(expr, topOp);
        f.getArguments().add(new MutableObject<>(eo.first));
        topOp = eo.second;
    }
    a.getInputs().add(topOp);
    return new Pair<>(a, v1);
}