| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.drill.exec.planner.logical; |
| |
| import org.apache.calcite.plan.RelOptCluster; |
| import org.apache.calcite.plan.RelTraitSet; |
| import org.apache.calcite.rel.AbstractRelNode; |
| import org.apache.calcite.rel.RelWriter; |
| import org.apache.calcite.rel.metadata.RelMetadataQuery; |
| import org.apache.calcite.rel.type.RelDataType; |
| import org.apache.drill.common.logical.data.LogicalOperator; |
| import org.apache.drill.exec.planner.physical.PlannerSettings; |
| import org.apache.drill.exec.planner.physical.PrelUtil; |
| import org.apache.drill.exec.store.direct.DirectGroupScan; |
| |
| /** |
| * Logical RelNode representing a {@link DirectGroupScan}. This is not backed by a {@link DrillTable}, |
| * unlike {@link DrillScanRel}. |
| */ |
| public class DrillDirectScanRel extends AbstractRelNode implements DrillRel { |
| |
| private final DirectGroupScan groupScan; |
| private final RelDataType rowType; |
| |
| public DrillDirectScanRel(RelOptCluster cluster, RelTraitSet traitSet, DirectGroupScan directGroupScan, |
| RelDataType rowType) { |
| super(cluster, traitSet); |
| this.groupScan = directGroupScan; |
| this.rowType = rowType; |
| } |
| |
| @Override |
| public LogicalOperator implement(DrillImplementor implementor) { |
| return null; |
| } |
| |
| @Override |
| public RelDataType deriveRowType() { |
| return this.rowType; |
| } |
| |
| @Override |
| public RelWriter explainTerms(RelWriter pw) { |
| return super.explainTerms(pw).item("directscan", groupScan.getDigest()); |
| } |
| |
| @Override |
| public double estimateRowCount(RelMetadataQuery mq) { |
| final PlannerSettings settings = PrelUtil.getPlannerSettings(getCluster()); |
| return groupScan.getScanStats(settings).getRecordCount(); |
| } |
| |
| public DirectGroupScan getGroupScan() { |
| return groupScan; |
| } |
| } |