Examples with TableFunctionScan org.apache.calcite.rel.core.TableFunctionScan used on opensource projects

Example 1 with TableFunctionScan

use of org.apache.calcite.rel.core.TableFunctionScan in project calcite by apache.

the class MutableRels method toMutable.

public static MutableRel toMutable(RelNode rel) {
    if (rel instanceof HepRelVertex) {
        return toMutable(((HepRelVertex) rel).getCurrentRel());
    }
    if (rel instanceof RelSubset) {
        return toMutable(Util.first(((RelSubset) rel).getBest(), ((RelSubset) rel).getOriginal()));
    }
    if (rel instanceof TableScan) {
        return MutableScan.of((TableScan) rel);
    }
    if (rel instanceof Values) {
        return MutableValues.of((Values) rel);
    }
    if (rel instanceof Project) {
        final Project project = (Project) rel;
        final MutableRel input = toMutable(project.getInput());
        return MutableProject.of(input, project.getProjects(), project.getRowType().getFieldNames());
    }
    if (rel instanceof Filter) {
        final Filter filter = (Filter) rel;
        final MutableRel input = toMutable(filter.getInput());
        return MutableFilter.of(input, filter.getCondition());
    }
    if (rel instanceof Aggregate) {
        final Aggregate aggregate = (Aggregate) rel;
        final MutableRel input = toMutable(aggregate.getInput());
        return MutableAggregate.of(input, aggregate.getGroupSet(), aggregate.getGroupSets(), aggregate.getAggCallList());
    }
    if (rel instanceof Sort) {
        final Sort sort = (Sort) rel;
        final MutableRel input = toMutable(sort.getInput());
        return MutableSort.of(input, sort.getCollation(), sort.offset, sort.fetch);
    }
    if (rel instanceof Calc) {
        final Calc calc = (Calc) rel;
        final MutableRel input = toMutable(calc.getInput());
        return MutableCalc.of(input, calc.getProgram());
    }
    if (rel instanceof Exchange) {
        final Exchange exchange = (Exchange) rel;
        final MutableRel input = toMutable(exchange.getInput());
        return MutableExchange.of(input, exchange.getDistribution());
    }
    if (rel instanceof Collect) {
        final Collect collect = (Collect) rel;
        final MutableRel input = toMutable(collect.getInput());
        return MutableCollect.of(collect.getRowType(), input, collect.getFieldName());
    }
    if (rel instanceof Uncollect) {
        final Uncollect uncollect = (Uncollect) rel;
        final MutableRel input = toMutable(uncollect.getInput());
        return MutableUncollect.of(uncollect.getRowType(), input, uncollect.withOrdinality);
    }
    if (rel instanceof Window) {
        final Window window = (Window) rel;
        final MutableRel input = toMutable(window.getInput());
        return MutableWindow.of(window.getRowType(), input, window.groups, window.getConstants());
    }
    if (rel instanceof TableModify) {
        final TableModify modify = (TableModify) rel;
        final MutableRel input = toMutable(modify.getInput());
        return MutableTableModify.of(modify.getRowType(), input, modify.getTable(), modify.getCatalogReader(), modify.getOperation(), modify.getUpdateColumnList(), modify.getSourceExpressionList(), modify.isFlattened());
    }
    if (rel instanceof Sample) {
        final Sample sample = (Sample) rel;
        final MutableRel input = toMutable(sample.getInput());
        return MutableSample.of(input, sample.getSamplingParameters());
    }
    if (rel instanceof TableFunctionScan) {
        final TableFunctionScan tableFunctionScan = (TableFunctionScan) rel;
        final List<MutableRel> inputs = toMutables(tableFunctionScan.getInputs());
        return MutableTableFunctionScan.of(tableFunctionScan.getCluster(), tableFunctionScan.getRowType(), inputs, tableFunctionScan.getCall(), tableFunctionScan.getElementType(), tableFunctionScan.getColumnMappings());
    }
    // is a sub-class of Join.
    if (rel instanceof SemiJoin) {
        final SemiJoin semiJoin = (SemiJoin) rel;
        final MutableRel left = toMutable(semiJoin.getLeft());
        final MutableRel right = toMutable(semiJoin.getRight());
        return MutableSemiJoin.of(semiJoin.getRowType(), left, right, semiJoin.getCondition(), semiJoin.getLeftKeys(), semiJoin.getRightKeys());
    }
    if (rel instanceof Join) {
        final Join join = (Join) rel;
        final MutableRel left = toMutable(join.getLeft());
        final MutableRel right = toMutable(join.getRight());
        return MutableJoin.of(join.getRowType(), left, right, join.getCondition(), join.getJoinType(), join.getVariablesSet());
    }
    if (rel instanceof Correlate) {
        final Correlate correlate = (Correlate) rel;
        final MutableRel left = toMutable(correlate.getLeft());
        final MutableRel right = toMutable(correlate.getRight());
        return MutableCorrelate.of(correlate.getRowType(), left, right, correlate.getCorrelationId(), correlate.getRequiredColumns(), correlate.getJoinType());
    }
    if (rel instanceof Union) {
        final Union union = (Union) rel;
        final List<MutableRel> inputs = toMutables(union.getInputs());
        return MutableUnion.of(union.getRowType(), inputs, union.all);
    }
    if (rel instanceof Minus) {
        final Minus minus = (Minus) rel;
        final List<MutableRel> inputs = toMutables(minus.getInputs());
        return MutableMinus.of(minus.getRowType(), inputs, minus.all);
    }
    if (rel instanceof Intersect) {
        final Intersect intersect = (Intersect) rel;
        final List<MutableRel> inputs = toMutables(intersect.getInputs());
        return MutableIntersect.of(intersect.getRowType(), inputs, intersect.all);
    }
    throw new RuntimeException("cannot translate " + rel + " to MutableRel");
}

Example 2 with TableFunctionScan

use of org.apache.calcite.rel.core.TableFunctionScan in project beam by apache.

the class BeamTableFunctionScanRule method convert.

@Override
public RelNode convert(RelNode relNode) {
    TableFunctionScan tableFunctionScan = (TableFunctionScan) relNode;
    // only support one input for table function scan.
    List<RelNode> inputs = new ArrayList<>();
    checkArgument(relNode.getInputs().size() == 1, "Wrong number of inputs for %s, expected 1 input but received: %s", BeamTableFunctionScanRel.class.getSimpleName(), relNode.getInputs().size());
    inputs.add(convert(relNode.getInput(0), relNode.getInput(0).getTraitSet().replace(BeamLogicalConvention.INSTANCE)));
    return new BeamTableFunctionScanRel(tableFunctionScan.getCluster(), tableFunctionScan.getTraitSet().replace(BeamLogicalConvention.INSTANCE), inputs, tableFunctionScan.getCall(), null, tableFunctionScan.getCall().getType(), Collections.EMPTY_SET);
}

Example 3 with TableFunctionScan

use of org.apache.calcite.rel.core.TableFunctionScan in project hive by apache.

the class HiveRelFieldTrimmer method trimFields.

/**
 * Variant of {@link #trimFields(RelNode, ImmutableBitSet, Set)} for {@link HiveTableFunctionScan}.
 * Copied {@link org.apache.calcite.sql2rel.RelFieldTrimmer#trimFields(
 * org.apache.calcite.rel.logical.LogicalTableFunctionScan, ImmutableBitSet, Set)}
 * and replaced <code>tabFun</code> to {@link HiveTableFunctionScan}.
 * Proper fix would be implement this in calcite.
 */
public TrimResult trimFields(HiveTableFunctionScan tabFun, ImmutableBitSet fieldsUsed, Set<RelDataTypeField> extraFields) {
    final RelDataType rowType = tabFun.getRowType();
    final int fieldCount = rowType.getFieldCount();
    final List<RelNode> newInputs = new ArrayList<>();
    for (RelNode input : tabFun.getInputs()) {
        final int inputFieldCount = input.getRowType().getFieldCount();
        ImmutableBitSet inputFieldsUsed = ImmutableBitSet.range(inputFieldCount);
        // Create input with trimmed columns.
        final Set<RelDataTypeField> inputExtraFields = Collections.emptySet();
        TrimResult trimResult = trimChildRestore(tabFun, input, inputFieldsUsed, inputExtraFields);
        assert trimResult.right.isIdentity();
        newInputs.add(trimResult.left);
    }
    TableFunctionScan newTabFun = tabFun;
    if (!tabFun.getInputs().equals(newInputs)) {
        newTabFun = tabFun.copy(tabFun.getTraitSet(), newInputs, tabFun.getCall(), tabFun.getElementType(), tabFun.getRowType(), tabFun.getColumnMappings());
    }
    assert newTabFun.getClass() == tabFun.getClass();
    // Always project all fields.
    Mapping mapping = Mappings.createIdentity(fieldCount);
    return result(newTabFun, mapping);
}