/**
* 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.sql.logical;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.core.TableScan;
import org.apache.drill.exec.ops.OptimizerRulesContext;
import org.apache.drill.exec.physical.base.GroupScan;
import org.apache.drill.exec.planner.PartitionDescriptor;
import org.apache.drill.exec.planner.logical.DrillFilterRel;
import org.apache.drill.exec.planner.logical.DrillProjectRel;
import org.apache.drill.exec.planner.logical.DrillScanRel;
import org.apache.drill.exec.planner.logical.RelOptHelper;
import org.apache.drill.exec.planner.logical.partition.PruneScanRule;
import org.apache.drill.exec.planner.physical.PlannerSettings;
import org.apache.drill.exec.planner.physical.PrelUtil;
import org.apache.drill.exec.planner.sql.HivePartitionDescriptor;
import org.apache.drill.exec.store.StoragePluginOptimizerRule;
import org.apache.drill.exec.store.hive.HiveScan;
import org.apache.calcite.plan.RelOptRuleCall;
public abstract class HivePushPartitionFilterIntoScan {
public static final StoragePluginOptimizerRule getFilterOnProject(OptimizerRulesContext optimizerRulesContext,
final String defaultPartitionValue) {
return new PruneScanRule(
RelOptHelper.some(DrillFilterRel.class, RelOptHelper.some(DrillProjectRel.class, RelOptHelper.any(DrillScanRel.class))),
"HivePushPartitionFilterIntoScan:Filter_On_Project_Hive",
optimizerRulesContext) {
@Override
public PartitionDescriptor getPartitionDescriptor(PlannerSettings settings, TableScan scanRel) {
return new HivePartitionDescriptor(settings, (DrillScanRel) scanRel, getOptimizerRulesContext().getManagedBuffer(),
defaultPartitionValue);
}
@Override
public boolean matches(RelOptRuleCall call) {
final DrillScanRel scan = (DrillScanRel) call.rel(2);
GroupScan groupScan = scan.getGroupScan();
// this rule is applicable only for Hive based partition pruning
if (PrelUtil.getPlannerSettings(scan.getCluster().getPlanner()).isHepPartitionPruningEnabled()) {
return groupScan instanceof HiveScan && groupScan.supportsPartitionFilterPushdown() && !scan.partitionFilterPushdown();
} else {
return groupScan instanceof HiveScan && groupScan.supportsPartitionFilterPushdown();
}
}
@Override
public void onMatch(RelOptRuleCall call) {
final DrillFilterRel filterRel = call.rel(0);
final DrillProjectRel projectRel = call.rel(1);
final DrillScanRel scanRel = call.rel(2);
doOnMatch(call, filterRel, projectRel, scanRel);
}
};
}
public static final StoragePluginOptimizerRule getFilterOnScan(OptimizerRulesContext optimizerRulesContext,
final String defaultPartitionValue) {
return new PruneScanRule(
RelOptHelper.some(DrillFilterRel.class, RelOptHelper.any(DrillScanRel.class)),
"HivePushPartitionFilterIntoScan:Filter_On_Scan_Hive", optimizerRulesContext) {
@Override
public PartitionDescriptor getPartitionDescriptor(PlannerSettings settings, TableScan scanRel) {
return new HivePartitionDescriptor(settings, (DrillScanRel) scanRel, getOptimizerRulesContext().getManagedBuffer(),
defaultPartitionValue);
}
@Override
public boolean matches(RelOptRuleCall call) {
final DrillScanRel scan = (DrillScanRel) call.rel(1);
GroupScan groupScan = scan.getGroupScan();
// this rule is applicable only for Hive based partition pruning
if (PrelUtil.getPlannerSettings(scan.getCluster().getPlanner()).isHepPartitionPruningEnabled()) {
return groupScan instanceof HiveScan && groupScan.supportsPartitionFilterPushdown() && !scan.partitionFilterPushdown();
} else {
return groupScan instanceof HiveScan && groupScan.supportsPartitionFilterPushdown();
}
}
@Override
public void onMatch(RelOptRuleCall call) {
final DrillFilterRel filterRel = call.rel(0);
final DrillScanRel scanRel = call.rel(1);
doOnMatch(call, filterRel, null, scanRel);
}
};
}
}