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

Example 6 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 7 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 8 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 9 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);
}

Example 10 with ScalarFunctionCallExpression

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

the class EquivalenceClassUtils method addEquivalenceClassesForPrimaryIndexAccess.

/**
     * Adds equivalent classes for primary index accesses, including unnest-map for
     * primary index access and data source scan through primary index ---
     * one equivalent class between a primary key variable and a record field-access expression.
     *
     * @param operator
     *            , the primary index access operator.
     * @param indexSearchVars
     *            , the returned variables from primary index access. The last variable
     *            is the record variable.
     * @param recordType
     *            , the record type of an index payload record.
     * @param metaRecordType
     *            , the type of a meta record associated with an index payload record.
     * @param dataset
     *            , the accessed dataset.
     * @param context
     *            , the optimization context.
     * @throws AlgebricksException
     */
@SuppressWarnings("unchecked")
public static void addEquivalenceClassesForPrimaryIndexAccess(ILogicalOperator operator, List<LogicalVariable> indexSearchVars, ARecordType recordType, ARecordType metaRecordType, Dataset dataset, IOptimizationContext context) throws AlgebricksException {
    if (dataset.getDatasetDetails().getDatasetType() != DatasetType.INTERNAL) {
        return;
    }
    InternalDatasetDetails datasetDetails = (InternalDatasetDetails) dataset.getDatasetDetails();
    List<List<String>> primaryKey = datasetDetails.getPrimaryKey();
    Map<String, Integer> fieldNameToIndexMap = new HashMap<String, Integer>();
    String[] fieldNames = recordType.getFieldNames();
    for (int fieldIndex = 0; fieldIndex < fieldNames.length; ++fieldIndex) {
        fieldNameToIndexMap.put(fieldNames[fieldIndex], fieldIndex);
    }
    boolean hasMeta = dataset.hasMetaPart();
    Map<String, Integer> metaFieldNameToIndexMap = new HashMap<>();
    if (hasMeta) {
        String[] metaFieldNames = metaRecordType.getFieldNames();
        for (int metaFieldIndex = 0; metaFieldIndex < metaFieldNames.length; ++metaFieldIndex) {
            metaFieldNameToIndexMap.put(metaFieldNames[metaFieldIndex], metaFieldIndex);
        }
    }
    List<Integer> keySourceIndicators = datasetDetails.getKeySourceIndicator();
    LogicalVariable recordVar = hasMeta ? indexSearchVars.get(indexSearchVars.size() - 2) : indexSearchVars.get(indexSearchVars.size() - 1);
    LogicalVariable metaRecordVar = hasMeta ? indexSearchVars.get(indexSearchVars.size() - 1) : null;
    for (int pkIndex = 0; pkIndex < primaryKey.size(); ++pkIndex) {
        LogicalVariable referredRecordVar = recordVar;
        String pkFieldName = primaryKey.get(pkIndex).get(0);
        int source = keySourceIndicators.get(pkIndex);
        Integer fieldIndexInRecord;
        if (source == 0) {
            // The field is from the main record.
            fieldIndexInRecord = fieldNameToIndexMap.get(pkFieldName);
        } else {
            // The field is from the auxiliary meta record.
            referredRecordVar = metaRecordVar;
            fieldIndexInRecord = metaFieldNameToIndexMap.get(pkFieldName);
        }
        LogicalVariable var = indexSearchVars.get(pkIndex);
        ILogicalExpression expr = new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.FIELD_ACCESS_BY_INDEX), new MutableObject<ILogicalExpression>(new VariableReferenceExpression(referredRecordVar)), new MutableObject<ILogicalExpression>(new ConstantExpression(new AsterixConstantValue(new AInt32(fieldIndexInRecord)))));
        EquivalenceClass equivClass = new EquivalenceClass(Collections.singletonList(var), var, Collections.singletonList(expr));
        Map<LogicalVariable, EquivalenceClass> equivalenceMap = context.getEquivalenceClassMap(operator);
        if (equivalenceMap == null) {
            equivalenceMap = new HashMap<LogicalVariable, EquivalenceClass>();
            context.putEquivalenceClassMap(operator, equivalenceMap);
        }
        equivalenceMap.put(var, equivClass);
    }
}