| /* |
| * 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.store.plan.rel; |
| |
| import org.apache.calcite.plan.RelOptCluster; |
| 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.exceptions.DrillRuntimeException; |
| import org.apache.drill.exec.physical.base.GroupScan; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.planner.physical.LeafPrel; |
| import org.apache.drill.exec.planner.physical.PhysicalPlanCreator; |
| import org.apache.drill.exec.record.BatchSchema; |
| import org.apache.drill.exec.store.SubsetRemover; |
| import org.apache.drill.exec.store.plan.PluginImplementor; |
| |
| import java.io.IOException; |
| |
| /** |
| * Represents a plugin-specific plan once children nodes have been pushed down into group scan. |
| */ |
| public class PluginPrel extends AbstractRelNode implements LeafPrel { |
| private final GroupScan groupScan; |
| private final RelDataType rowType; |
| |
| public PluginPrel(RelOptCluster cluster, PluginIntermediatePrel intermediatePrel) { |
| super(cluster, intermediatePrel.getTraitSet()); |
| this.rowType = intermediatePrel.getRowType(); |
| PluginRel input = (PluginRel) intermediatePrel.getInput().accept(SubsetRemover.INSTANCE); |
| try { |
| PluginImplementor implementor = intermediatePrel.getPluginImplementor(); |
| input.implement(implementor); |
| this.groupScan = implementor.getPhysicalOperator(); |
| } catch (IOException e) { |
| throw new DrillRuntimeException(e); |
| } |
| } |
| |
| @Override |
| public PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) { |
| return creator.addMetadata(this, groupScan); |
| } |
| |
| @Override |
| public BatchSchema.SelectionVectorMode[] getSupportedEncodings() { |
| return BatchSchema.SelectionVectorMode.DEFAULT; |
| } |
| |
| @Override |
| public BatchSchema.SelectionVectorMode getEncoding() { |
| return BatchSchema.SelectionVectorMode.NONE; |
| } |
| |
| @Override |
| public boolean needsFinalColumnReordering() { |
| return false; |
| } |
| |
| @Override |
| public RelWriter explainTerms(RelWriter pw) { |
| return super.explainTerms(pw).item("groupScan", groupScan); |
| } |
| |
| @Override |
| public double estimateRowCount(RelMetadataQuery mq) { |
| return groupScan.getScanStats(mq).getRecordCount(); |
| } |
| |
| @Override |
| protected RelDataType deriveRowType() { |
| return rowType; |
| } |
| } |