amansinha100 commented on a change in pull request #1466: DRILL-6381: Add support for index based planning and execution URL: https://github.com/apache/drill/pull/1466#discussion_r224286776
########## File path: contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/MapRDBPushProjectIntoScan.java ########## @@ -0,0 +1,145 @@ +/* + * 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.mapr.db; + +import com.google.common.collect.Lists; +import org.apache.calcite.plan.RelOptRuleCall; +import org.apache.calcite.plan.RelOptRuleOperand; +import org.apache.calcite.plan.RelTrait; +import org.apache.calcite.plan.RelTraitSet; +import org.apache.calcite.rel.RelCollation; +import org.apache.calcite.rel.rules.ProjectRemoveRule; +import org.apache.calcite.rel.type.RelDataType; +import org.apache.calcite.rel.type.RelDataTypeField; +import org.apache.calcite.rex.RexNode; +import org.apache.drill.common.exceptions.DrillRuntimeException; +import org.apache.drill.exec.planner.common.DrillRelOptUtil; +import org.apache.drill.exec.planner.logical.RelOptHelper; +import org.apache.drill.exec.planner.common.DrillRelOptUtil; +import org.apache.drill.exec.planner.common.DrillRelOptUtil.ProjectPushInfo; +import org.apache.drill.exec.planner.physical.Prel; +import org.apache.drill.exec.planner.physical.ProjectPrel; +import org.apache.drill.exec.planner.physical.ScanPrel; +import org.apache.drill.exec.store.StoragePluginOptimizerRule; +import org.apache.drill.exec.store.mapr.db.binary.BinaryTableGroupScan; +import org.apache.drill.exec.store.mapr.db.json.JsonTableGroupScan; +import org.apache.drill.exec.util.Utilities; + +import java.util.List; + +public abstract class MapRDBPushProjectIntoScan extends StoragePluginOptimizerRule { + static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(MapRDBPushProjectIntoScan.class); + + private MapRDBPushProjectIntoScan(RelOptRuleOperand operand, String description) { + super(operand, description); + } + + public static final StoragePluginOptimizerRule PROJECT_ON_SCAN = new MapRDBPushProjectIntoScan( + RelOptHelper.some(ProjectPrel.class, RelOptHelper.any(ScanPrel.class)), "MapRDBPushProjIntoScan:Proj_On_Scan") { + @Override + public void onMatch(RelOptRuleCall call) { + final ScanPrel scan = (ScanPrel) call.rel(1); + final ProjectPrel project = (ProjectPrel) call.rel(0); + if (!(scan.getGroupScan() instanceof MapRDBGroupScan)) { + return; + } + doPushProjectIntoGroupScan(call, project, scan, (MapRDBGroupScan) scan.getGroupScan()); + if (scan.getGroupScan() instanceof BinaryTableGroupScan) { Review comment: Good catch..this pushdown was only intended for `JsonTableGroupScan`, so not sure why that extra call before the `if` block is there. Will look into the origins of it. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
