Examples with RexNode org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode used on opensource projects

Example 31 with RexNode

use of org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode in project drill by apache.

the class DrillPushProjIntoScan method onMatch.

@Override
public void onMatch(RelOptRuleCall call) {
    final Project proj = (Project) call.rel(0);
    final TableScan scan = (TableScan) call.rel(1);
    try {
        ProjectPushInfo columnInfo = PrelUtil.getColumns(scan.getRowType(), proj.getProjects());
        // get DrillTable, either wrapped in RelOptTable, or DrillTranslatableTable.
        DrillTable table = scan.getTable().unwrap(DrillTable.class);
        if (table == null) {
            table = scan.getTable().unwrap(DrillTranslatableTable.class).getDrillTable();
        }
        if (//
        columnInfo == null || columnInfo.isStarQuery() || !//
        table.getGroupScan().canPushdownProjects(columnInfo.columns)) {
            return;
        }
        final DrillScanRel newScan = new DrillScanRel(scan.getCluster(), scan.getTraitSet().plus(DrillRel.DRILL_LOGICAL), scan.getTable(), columnInfo.createNewRowType(proj.getInput().getCluster().getTypeFactory()), columnInfo.columns);
        List<RexNode> newProjects = Lists.newArrayList();
        for (RexNode n : proj.getChildExps()) {
            newProjects.add(n.accept(columnInfo.getInputRewriter()));
        }
        final DrillProjectRel newProj = new DrillProjectRel(proj.getCluster(), proj.getTraitSet().plus(DrillRel.DRILL_LOGICAL), newScan, newProjects, proj.getRowType());
        if (ProjectRemoveRule.isTrivial(newProj)) {
            call.transformTo(newScan);
        } else {
            call.transformTo(newProj);
        }
    } catch (IOException e) {
        throw new DrillRuntimeException(e);
    }
}

Example 32 with RexNode

use of org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode in project drill by apache.

the class InsertLocalExchangeVisitor method visitExchange.

@Override
public Prel visitExchange(ExchangePrel prel, Void value) throws RuntimeException {
    Prel child = ((Prel) prel.getInput()).accept(this, null);
    //   If DeMuxExchange is enabled, insert a UnorderedDeMuxExchangePrel after HashToRandomExchangePrel.
    if (!(prel instanceof HashToRandomExchangePrel)) {
        return (Prel) prel.copy(prel.getTraitSet(), Collections.singletonList(((RelNode) child)));
    }
    Prel newPrel = child;
    final HashToRandomExchangePrel hashPrel = (HashToRandomExchangePrel) prel;
    final List<String> childFields = child.getRowType().getFieldNames();
    List<RexNode> removeUpdatedExpr = null;
    if (isMuxEnabled) {
        // Insert Project Operator with new column that will be a hash for HashToRandomExchange fields
        final List<DistributionField> distFields = hashPrel.getFields();
        final List<String> outputFieldNames = Lists.newArrayList(childFields);
        final RexBuilder rexBuilder = prel.getCluster().getRexBuilder();
        final List<RelDataTypeField> childRowTypeFields = child.getRowType().getFieldList();
        final HashExpressionCreatorHelper<RexNode> hashHelper = new RexNodeBasedHashExpressionCreatorHelper(rexBuilder);
        final List<RexNode> distFieldRefs = Lists.newArrayListWithExpectedSize(distFields.size());
        for (int i = 0; i < distFields.size(); i++) {
            final int fieldId = distFields.get(i).getFieldId();
            distFieldRefs.add(rexBuilder.makeInputRef(childRowTypeFields.get(fieldId).getType(), fieldId));
        }
        final List<RexNode> updatedExpr = Lists.newArrayListWithExpectedSize(childRowTypeFields.size());
        removeUpdatedExpr = Lists.newArrayListWithExpectedSize(childRowTypeFields.size());
        for (RelDataTypeField field : childRowTypeFields) {
            RexNode rex = rexBuilder.makeInputRef(field.getType(), field.getIndex());
            updatedExpr.add(rex);
            removeUpdatedExpr.add(rex);
        }
        outputFieldNames.add(HashPrelUtil.HASH_EXPR_NAME);
        // distribution seed
        final RexNode distSeed = rexBuilder.makeBigintLiteral(BigDecimal.valueOf(HashPrelUtil.DIST_SEED));
        updatedExpr.add(HashPrelUtil.createHashBasedPartitionExpression(distFieldRefs, distSeed, hashHelper));
        RelDataType rowType = RexUtil.createStructType(prel.getCluster().getTypeFactory(), updatedExpr, outputFieldNames);
        ProjectPrel addColumnprojectPrel = new ProjectPrel(child.getCluster(), child.getTraitSet(), child, updatedExpr, rowType);
        newPrel = new UnorderedMuxExchangePrel(addColumnprojectPrel.getCluster(), addColumnprojectPrel.getTraitSet(), addColumnprojectPrel);
    }
    newPrel = new HashToRandomExchangePrel(prel.getCluster(), prel.getTraitSet(), newPrel, ((HashToRandomExchangePrel) prel).getFields());
    if (isDeMuxEnabled) {
        HashToRandomExchangePrel hashExchangePrel = (HashToRandomExchangePrel) newPrel;
        // Insert a DeMuxExchange to narrow down the number of receivers
        newPrel = new UnorderedDeMuxExchangePrel(prel.getCluster(), prel.getTraitSet(), hashExchangePrel, hashExchangePrel.getFields());
    }
    if (isMuxEnabled) {
        // remove earlier inserted Project Operator - since it creates issues down the road in HashJoin
        RelDataType removeRowType = RexUtil.createStructType(newPrel.getCluster().getTypeFactory(), removeUpdatedExpr, childFields);
        ProjectPrel removeColumnProjectPrel = new ProjectPrel(newPrel.getCluster(), newPrel.getTraitSet(), newPrel, removeUpdatedExpr, removeRowType);
        return removeColumnProjectPrel;
    }
    return newPrel;
}

Example 33 with RexNode

use of org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode in project hive by apache.

the class HiveRelDecorrelator method decorrelateRel.

public Frame decorrelateRel(HiveFilter rel) throws SemanticException {
    // 
    // Rewrite logic:
    // 
    // 1. If a LogicalFilter references a correlated field in its filter
    // condition, rewrite the LogicalFilter to be
    // LogicalFilter
    // LogicalJoin(cross product)
    // OriginalFilterInput
    // ValueGenerator(produces distinct sets of correlated variables)
    // and rewrite the correlated fieldAccess in the filter condition to
    // reference the LogicalJoin output.
    // 
    // 2. If LogicalFilter does not reference correlated variables, simply
    // rewrite the filter condition using new input.
    // 
    final RelNode oldInput = rel.getInput();
    Frame frame = getInvoke(oldInput, rel);
    if (frame == null) {
        // If input has not been rewritten, do not rewrite this rel.
        return null;
    }
    Frame oldInputFrame = frame;
    // and produce the correlated variables in the new output.
    if (cm.mapRefRelToCorRef.containsKey(rel)) {
        frame = decorrelateInputWithValueGenerator(rel);
    }
    boolean valueGenerator = true;
    if (frame.r == oldInputFrame.r) {
        // this means correated value generator wasn't generated
        valueGenerator = false;
    }
    if (oldInput instanceof LogicalCorrelate && ((LogicalCorrelate) oldInput).getJoinType() == SemiJoinType.SEMI && !cm.mapRefRelToCorRef.containsKey(rel)) {
        // this conditions need to be pushed into semi-join since this condition
        // corresponds to IN
        HiveSemiJoin join = ((HiveSemiJoin) frame.r);
        final List<RexNode> conditions = new ArrayList<>();
        RexNode joinCond = join.getCondition();
        conditions.add(joinCond);
        conditions.add(decorrelateExpr(rel.getCondition(), valueGenerator));
        final RexNode condition = RexUtil.composeConjunction(rexBuilder, conditions, false);
        RelNode newRel = HiveSemiJoin.getSemiJoin(frame.r.getCluster(), frame.r.getTraitSet(), join.getLeft(), join.getRight(), condition, join.getLeftKeys(), join.getRightKeys());
        return register(rel, newRel, frame.oldToNewOutputs, frame.corDefOutputs);
    }
    // Replace the filter expression to reference output of the join
    // Map filter to the new filter over join
    relBuilder.push(frame.r).filter((decorrelateExpr(rel.getCondition(), valueGenerator)));
    // input rel.
    return register(rel, relBuilder.build(), frame.oldToNewOutputs, frame.corDefOutputs);
}

Example 34 with RexNode

use of org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode in project hive by apache.

the class HiveRelDecorrelator method decorrelateRel.

/**
 * Rewrite LogicalProject.
 *
 * @param rel the project rel to rewrite
 */
public Frame decorrelateRel(LogicalProject rel) throws SemanticException {
    // 
    // Rewrite logic:
    // 
    // 1. Pass along any correlated variables coming from the input.
    // 
    final RelNode oldInput = rel.getInput();
    Frame frame = getInvoke(oldInput, rel);
    if (frame == null) {
        // If input has not been rewritten, do not rewrite this rel.
        return null;
    }
    final List<RexNode> oldProjects = rel.getProjects();
    final List<RelDataTypeField> relOutput = rel.getRowType().getFieldList();
    // LogicalProject projects the original expressions,
    // plus any correlated variables the input wants to pass along.
    final List<Pair<RexNode, String>> projects = Lists.newArrayList();
    // and produce the correlated variables in the new output.
    if (cm.mapRefRelToCorRef.containsKey(rel)) {
        frame = decorrelateInputWithValueGenerator(rel);
    }
    // LogicalProject projects the original expressions
    final Map<Integer, Integer> mapOldToNewOutputs = new HashMap<>();
    int newPos;
    for (newPos = 0; newPos < oldProjects.size(); newPos++) {
        projects.add(newPos, Pair.of(decorrelateExpr(oldProjects.get(newPos)), relOutput.get(newPos).getName()));
        mapOldToNewOutputs.put(newPos, newPos);
    }
    // Project any correlated variables the input wants to pass along.
    final SortedMap<CorDef, Integer> corDefOutputs = new TreeMap<>();
    for (Map.Entry<CorDef, Integer> entry : frame.corDefOutputs.entrySet()) {
        projects.add(RexInputRef.of2(entry.getValue(), frame.r.getRowType().getFieldList()));
        corDefOutputs.put(entry.getKey(), newPos);
        newPos++;
    }
    RelNode newProject = HiveProject.create(frame.r, Pair.left(projects), Pair.right(projects));
    return register(rel, newProject, mapOldToNewOutputs, corDefOutputs);
}

Example 35 with RexNode

use of org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexNode in project hive by apache.

the class HiveRelDecorrelator method projectJoinOutputWithNullability.

/**
 * Pulls project above the join from its RHS input. Enforces nullability
 * for join output.
 *
 * @param join          Join
 * @param project       Original project as the right-hand input of the join
 * @param nullIndicatorPos Position of null indicator
 * @return the subtree with the new LogicalProject at the root
 */
private RelNode projectJoinOutputWithNullability(LogicalJoin join, LogicalProject project, int nullIndicatorPos) {
    final RelDataTypeFactory typeFactory = join.getCluster().getTypeFactory();
    final RelNode left = join.getLeft();
    final JoinRelType joinType = join.getJoinType();
    RexInputRef nullIndicator = new RexInputRef(nullIndicatorPos, typeFactory.createTypeWithNullability(join.getRowType().getFieldList().get(nullIndicatorPos).getType(), true));
    // now create the new project
    List<Pair<RexNode, String>> newProjExprs = Lists.newArrayList();
    // project everything from the LHS and then those from the original
    // projRel
    List<RelDataTypeField> leftInputFields = left.getRowType().getFieldList();
    for (int i = 0; i < leftInputFields.size(); i++) {
        newProjExprs.add(RexInputRef.of2(i, leftInputFields));
    }
    // Marked where the projected expr is coming from so that the types will
    // become nullable for the original projections which are now coming out
    // of the nullable side of the OJ.
    boolean projectPulledAboveLeftCorrelator = joinType.generatesNullsOnRight();
    for (Pair<RexNode, String> pair : project.getNamedProjects()) {
        RexNode newProjExpr = removeCorrelationExpr(pair.left, projectPulledAboveLeftCorrelator, nullIndicator);
        newProjExprs.add(Pair.of(newProjExpr, pair.right));
    }
    return RelOptUtil.createProject(join, newProjExprs, false);
}