Examples with LogicalVariable org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable used on opensource projects

Example 76 with LogicalVariable

use of org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable in project asterixdb by apache.

the class LogicalOperatorDeepCopyWithNewVariablesVisitor method visitIntersectOperator.

@Override
public ILogicalOperator visitIntersectOperator(IntersectOperator op, ILogicalOperator arg) throws AlgebricksException {
    List<List<LogicalVariable>> liveVarsInInputs = getLiveVarsInInputs(op);
    List<LogicalVariable> outputCopy = new ArrayList<>();
    for (LogicalVariable var : op.getOutputVars()) {
        outputCopy.add(deepCopyVariable(var));
    }
    IntersectOperator opCopy = new IntersectOperator(outputCopy, liveVarsInInputs);
    deepCopyInputsAnnotationsAndExecutionMode(op, arg, opCopy);
    return opCopy;
}

Example 77 with LogicalVariable

use of org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable in project asterixdb by apache.

the class IsomorphismVariableMappingVisitor method mapVariables.

private void mapVariables(List<LogicalVariable> variablesLeft, List<LogicalVariable> variablesRight) {
    if (variablesLeft.size() != variablesRight.size()) {
        return;
    }
    int size = variablesLeft.size();
    for (int i = 0; i < size; i++) {
        LogicalVariable left = variablesLeft.get(i);
        LogicalVariable right = variablesRight.get(i);
        variableMapping.put(right, left);
    }
}

Example 78 with LogicalVariable

use of org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable in project asterixdb by apache.

the class IsomorphismVariableMappingVisitor method mapVariablesForAbstractAssign.

private void mapVariablesForAbstractAssign(List<LogicalVariable> variablesLeft, List<Mutable<ILogicalExpression>> exprsLeft, List<LogicalVariable> variablesRight, List<Mutable<ILogicalExpression>> exprsRight) {
    if (variablesLeft.size() != variablesRight.size()) {
        return;
    }
    int size = variablesLeft.size();
    // Keeps track of already matched right side variables.
    Set<LogicalVariable> matchedRightVars = new HashSet<>();
    for (int i = 0; i < size; i++) {
        ILogicalExpression exprLeft = exprsLeft.get(i).getValue();
        LogicalVariable left = variablesLeft.get(i);
        for (int j = 0; j < size; j++) {
            ILogicalExpression exprRight = copyExpressionAndSubtituteVars(exprsRight.get(j)).getValue();
            LogicalVariable right = variablesRight.get(j);
            if (exprLeft.equals(exprRight) && !matchedRightVars.contains(right)) {
                variableMapping.put(right, left);
                // The added variable will not be considered in next rounds.
                matchedRightVars.add(right);
                break;
            }
        }
    }
}

Example 79 with LogicalVariable

use of org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable in project asterixdb by apache.

the class IsomorphismVariableMappingVisitor method mapVarExprPairList.

private void mapVarExprPairList(List<Pair<LogicalVariable, Mutable<ILogicalExpression>>> leftPairs, List<Pair<LogicalVariable, Mutable<ILogicalExpression>>> rightPairs) {
    if (leftPairs.size() != rightPairs.size()) {
        return;
    }
    for (int i = 0; i < leftPairs.size(); i++) {
        ILogicalExpression exprLeft = leftPairs.get(i).second.getValue();
        LogicalVariable leftVar = leftPairs.get(i).first;
        for (int j = 0; j < leftPairs.size(); j++) {
            ILogicalExpression exprRight = copyExpressionAndSubtituteVars(rightPairs.get(j).second).getValue();
            if (exprLeft.equals(exprRight)) {
                LogicalVariable rightVar = rightPairs.get(j).first;
                if (rightVar != null && leftVar != null) {
                    variableMapping.put(rightVar, leftVar);
                }
                break;
            }
        }
    }
}

Example 80 with LogicalVariable

use of org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable in project asterixdb by apache.

the class LangExpressionToPlanTranslator method translate.

public ILogicalPlan translate(Query expr, String outputDatasetName, ICompiledDmlStatement stmt, ILogicalOperator baseOp) throws AlgebricksException {
    MutableObject<ILogicalOperator> base = new MutableObject<>(new EmptyTupleSourceOperator());
    if (baseOp != null) {
        base = new MutableObject<>(baseOp);
    }
    Pair<ILogicalOperator, LogicalVariable> p = expr.accept(this, base);
    ArrayList<Mutable<ILogicalOperator>> globalPlanRoots = new ArrayList<>();
    ILogicalOperator topOp = p.first;
    List<LogicalVariable> liveVars = new ArrayList<>();
    VariableUtilities.getLiveVariables(topOp, liveVars);
    LogicalVariable unnestVar = liveVars.get(0);
    LogicalVariable resVar = unnestVar;
    if (outputDatasetName == null) {
        FileSplit outputFileSplit = metadataProvider.getOutputFile();
        if (outputFileSplit == null) {
            outputFileSplit = getDefaultOutputFileLocation(metadataProvider.getApplicationContext());
        }
        metadataProvider.setOutputFile(outputFileSplit);
        List<Mutable<ILogicalExpression>> writeExprList = new ArrayList<>(1);
        writeExprList.add(new MutableObject<>(new VariableReferenceExpression(resVar)));
        ResultSetSinkId rssId = new ResultSetSinkId(metadataProvider.getResultSetId());
        ResultSetDataSink sink = new ResultSetDataSink(rssId, null);
        DistributeResultOperator newTop = new DistributeResultOperator(writeExprList, sink);
        newTop.getInputs().add(new MutableObject<>(topOp));
        topOp = newTop;
        // Retrieve the Output RecordType (if any) and store it on
        // the DistributeResultOperator
        IAType outputRecordType = metadataProvider.findOutputRecordType();
        if (outputRecordType != null) {
            topOp.getAnnotations().put("output-record-type", outputRecordType);
        }
    } else {
        /**
             * add the collection-to-sequence right before the project,
             * because dataset only accept non-collection records
             */
        LogicalVariable seqVar = context.newVar();
        /**
             * This assign adds a marker function collection-to-sequence: if the input is a singleton collection, unnest
             * it; otherwise do nothing.
             */
        AssignOperator assignCollectionToSequence = new AssignOperator(seqVar, new MutableObject<>(new ScalarFunctionCallExpression(FunctionUtil.getFunctionInfo(BuiltinFunctions.COLLECTION_TO_SEQUENCE), new MutableObject<>(new VariableReferenceExpression(resVar)))));
        assignCollectionToSequence.getInputs().add(new MutableObject<>(topOp.getInputs().get(0).getValue()));
        topOp.getInputs().get(0).setValue(assignCollectionToSequence);
        ProjectOperator projectOperator = (ProjectOperator) topOp;
        projectOperator.getVariables().set(0, seqVar);
        resVar = seqVar;
        DatasetDataSource targetDatasource = validateDatasetInfo(metadataProvider, stmt.getDataverseName(), stmt.getDatasetName());
        List<Integer> keySourceIndicator = ((InternalDatasetDetails) targetDatasource.getDataset().getDatasetDetails()).getKeySourceIndicator();
        ArrayList<LogicalVariable> vars = new ArrayList<>();
        ArrayList<Mutable<ILogicalExpression>> exprs = new ArrayList<>();
        List<Mutable<ILogicalExpression>> varRefsForLoading = new ArrayList<>();
        List<List<String>> partitionKeys = targetDatasource.getDataset().getPrimaryKeys();
        int numOfPrimaryKeys = partitionKeys.size();
        for (int i = 0; i < numOfPrimaryKeys; i++) {
            if (keySourceIndicator == null || keySourceIndicator.get(i).intValue() == 0) {
                // record part
                PlanTranslationUtil.prepareVarAndExpression(partitionKeys.get(i), resVar, vars, exprs, varRefsForLoading, context);
            } else {
                // meta part
                PlanTranslationUtil.prepareMetaKeyAccessExpression(partitionKeys.get(i), unnestVar, exprs, vars, varRefsForLoading, context);
            }
        }
        AssignOperator assign = new AssignOperator(vars, exprs);
        List<String> additionalFilteringField = DatasetUtil.getFilterField(targetDatasource.getDataset());
        List<LogicalVariable> additionalFilteringVars;
        List<Mutable<ILogicalExpression>> additionalFilteringAssignExpressions;
        List<Mutable<ILogicalExpression>> additionalFilteringExpressions = null;
        AssignOperator additionalFilteringAssign = null;
        if (additionalFilteringField != null) {
            additionalFilteringVars = new ArrayList<>();
            additionalFilteringAssignExpressions = new ArrayList<>();
            additionalFilteringExpressions = new ArrayList<>();
            PlanTranslationUtil.prepareVarAndExpression(additionalFilteringField, resVar, additionalFilteringVars, additionalFilteringAssignExpressions, additionalFilteringExpressions, context);
            additionalFilteringAssign = new AssignOperator(additionalFilteringVars, additionalFilteringAssignExpressions);
            additionalFilteringAssign.getInputs().add(new MutableObject<>(topOp));
            assign.getInputs().add(new MutableObject<>(additionalFilteringAssign));
        } else {
            assign.getInputs().add(new MutableObject<>(topOp));
        }
        Mutable<ILogicalExpression> varRef = new MutableObject<>(new VariableReferenceExpression(resVar));
        ILogicalOperator leafOperator;
        switch(stmt.getKind()) {
            case Statement.Kind.INSERT:
                leafOperator = translateInsert(targetDatasource, varRef, varRefsForLoading, additionalFilteringExpressions, assign, stmt);
                break;
            case Statement.Kind.UPSERT:
                leafOperator = translateUpsert(targetDatasource, varRef, varRefsForLoading, additionalFilteringExpressions, assign, additionalFilteringField, unnestVar, topOp, exprs, resVar, additionalFilteringAssign, stmt);
                break;
            case Statement.Kind.DELETE:
                leafOperator = translateDelete(targetDatasource, varRef, varRefsForLoading, additionalFilteringExpressions, assign);
                break;
            case Statement.Kind.CONNECT_FEED:
                leafOperator = translateConnectFeed(targetDatasource, varRef, varRefsForLoading, additionalFilteringExpressions, assign);
                break;
            case Statement.Kind.SUBSCRIBE_FEED:
                leafOperator = translateSubscribeFeed((CompiledSubscribeFeedStatement) stmt, targetDatasource, unnestVar, topOp, exprs, resVar, varRefsForLoading, varRef, assign, additionalFilteringField, additionalFilteringAssign, additionalFilteringExpressions);
                break;
            default:
                throw new AlgebricksException("Unsupported statement kind " + stmt.getKind());
        }
        topOp = leafOperator;
    }
    globalPlanRoots.add(new MutableObject<>(topOp));
    ILogicalPlan plan = new ALogicalPlanImpl(globalPlanRoots);
    eliminateSharedOperatorReferenceForPlan(plan);
    return plan;
}