| /* |
| * 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.beam.sdk.extensions.sql.impl.rel; |
| |
| import static org.apache.beam.vendor.calcite.v1_20_0.com.google.common.base.Preconditions.checkArgument; |
| |
| import java.util.List; |
| import java.util.Map; |
| import org.apache.beam.sdk.extensions.sql.impl.planner.BeamCostModel; |
| import org.apache.beam.sdk.extensions.sql.impl.planner.NodeStats; |
| import org.apache.beam.sdk.extensions.sql.impl.rule.BeamIOSinkRule; |
| import org.apache.beam.sdk.extensions.sql.meta.BeamSqlTable; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.PCollectionList; |
| import org.apache.beam.sdk.values.Row; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptCluster; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptPlanner; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptTable; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.prepare.Prepare; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.TableModify; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.metadata.RelMetadataQuery; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexNode; |
| import org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.sql2rel.RelStructuredTypeFlattener; |
| |
| /** BeamRelNode to replace a {@code TableModify} node. */ |
| public class BeamIOSinkRel extends TableModify |
| implements BeamRelNode, RelStructuredTypeFlattener.SelfFlatteningRel { |
| |
| private final BeamSqlTable sqlTable; |
| private final Map<String, String> pipelineOptions; |
| private boolean isFlattening = false; |
| |
| public BeamIOSinkRel( |
| RelOptCluster cluster, |
| RelOptTable table, |
| Prepare.CatalogReader catalogReader, |
| RelNode child, |
| Operation operation, |
| List<String> updateColumnList, |
| List<RexNode> sourceExpressionList, |
| boolean flattened, |
| BeamSqlTable sqlTable, |
| Map<String, String> pipelineOptions) { |
| super( |
| cluster, |
| cluster.traitSetOf(BeamLogicalConvention.INSTANCE), |
| table, |
| catalogReader, |
| child, |
| operation, |
| updateColumnList, |
| sourceExpressionList, |
| flattened); |
| this.sqlTable = sqlTable; |
| this.pipelineOptions = pipelineOptions; |
| } |
| |
| @Override |
| public NodeStats estimateNodeStats(RelMetadataQuery mq) { |
| return BeamSqlRelUtils.getNodeStats(this.input, mq); |
| } |
| |
| @Override |
| public BeamCostModel beamComputeSelfCost(RelOptPlanner planner, RelMetadataQuery mq) { |
| NodeStats inputEstimates = BeamSqlRelUtils.getNodeStats(this.input, mq); |
| return BeamCostModel.FACTORY.makeCost(inputEstimates.getRowCount(), inputEstimates.getRate()); |
| } |
| |
| @Override |
| public RelNode copy(RelTraitSet traitSet, List<RelNode> inputs) { |
| boolean flattened = isFlattened() || isFlattening; |
| BeamIOSinkRel newRel = |
| new BeamIOSinkRel( |
| getCluster(), |
| getTable(), |
| getCatalogReader(), |
| sole(inputs), |
| getOperation(), |
| getUpdateColumnList(), |
| getSourceExpressionList(), |
| flattened, |
| sqlTable, |
| pipelineOptions); |
| newRel.traitSet = traitSet; |
| return newRel; |
| } |
| |
| @Override |
| public void flattenRel(RelStructuredTypeFlattener flattener) { |
| // rewriteGeneric calls this.copy. Setting isFlattining passes |
| // this context into copy for modification of the flattened flag. |
| isFlattening = true; |
| flattener.rewriteGeneric(this); |
| isFlattening = false; |
| } |
| |
| @Override |
| public void register(RelOptPlanner planner) { |
| planner.addRule(BeamIOSinkRule.INSTANCE); |
| super.register(planner); |
| } |
| |
| @Override |
| public PTransform<PCollectionList<Row>, PCollection<Row>> buildPTransform() { |
| return new Transform(); |
| } |
| |
| private class Transform extends PTransform<PCollectionList<Row>, PCollection<Row>> { |
| |
| @Override |
| public PCollection<Row> expand(PCollectionList<Row> pinput) { |
| checkArgument( |
| pinput.size() == 1, |
| "Wrong number of inputs for %s: %s", |
| BeamIOSinkRel.class.getSimpleName(), |
| pinput); |
| PCollection<Row> input = pinput.get(0); |
| |
| sqlTable.buildIOWriter(input); |
| |
| return input; |
| } |
| } |
| |
| @Override |
| public Map<String, String> getPipelineOptions() { |
| return pipelineOptions; |
| } |
| } |