org.apache.drill.exec.planner.physical.ValuesPrel Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.drill.exec.planner.physical;
import java.io.IOException;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelTraitSet;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.rex.RexLiteral;
import org.apache.drill.common.types.TypeProtos;
import org.apache.drill.exec.physical.base.PhysicalOperator;
import org.apache.drill.exec.physical.config.Values;
import org.apache.drill.exec.physical.impl.scan.v3.schema.SchemaUtils;
import org.apache.drill.exec.planner.common.DrillValuesRelBase;
import org.apache.drill.exec.planner.physical.visitor.PrelVisitor;
import org.apache.drill.exec.record.BatchSchema.SelectionVectorMode;
import org.apache.drill.exec.record.metadata.TupleMetadata;
import org.apache.drill.exec.record.metadata.TupleSchema;
/**
* Physical Values implementation in Drill.
*/
public class ValuesPrel extends DrillValuesRelBase implements Prel {
public ValuesPrel(RelOptCluster cluster, RelDataType rowType,
List extends List> tuples, RelTraitSet traits) {
super(cluster, rowType, tuples, traits);
}
public ValuesPrel(RelOptCluster cluster,
RelDataType rowType,
List extends List> tuples, RelTraitSet traits,
String content) {
super(cluster, rowType, tuples, traits, content);
}
@Override
public Iterator iterator() {
return Collections.emptyIterator();
}
@Override
public PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) throws IOException {
return creator.addMetadata(this, new Values(content, getSchema()));
}
private TupleMetadata getSchema() {
TupleSchema columnMetadata = new TupleSchema();
getRowType().getFieldList().stream()
.map(field -> SchemaUtils.getColumnMetadata(field.getName(), field.getType()))
.filter(metadata -> metadata.type() != TypeProtos.MinorType.LATE)
.forEach(columnMetadata::add);
return columnMetadata;
}
@Override
public Prel copy(RelTraitSet traitSet, List inputs) {
return new ValuesPrel(getCluster(), rowType, tuples, traitSet, content);
}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
@Override
public T accept(PrelVisitor logicalVisitor, X value) throws E {
return logicalVisitor.visitPrel(this, value);
}
@Override
public SelectionVectorMode[] getSupportedEncodings() {
return SelectionVectorMode.DEFAULT;
}
@Override
public SelectionVectorMode getEncoding() {
return SelectionVectorMode.NONE;
}
@Override
public boolean needsFinalColumnReordering() {
return false;
}
}
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