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/*
* 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;
import java.io.IOException;
import java.util.List;
import java.util.Set;
import org.apache.calcite.plan.RelOptRule;
import org.apache.drill.common.JSONOptions;
import org.apache.drill.common.expression.SchemaPath;
import org.apache.drill.common.logical.FormatPluginConfig;
import org.apache.drill.exec.ops.OptimizerRulesContext;
import org.apache.drill.exec.physical.base.AbstractGroupScan;
import org.apache.drill.exec.planner.PlannerPhase;
import org.apache.drill.shaded.guava.com.google.common.collect.ImmutableSet;
import org.apache.drill.exec.server.DrillbitContext;
import org.apache.drill.exec.server.options.SessionOptionManager;
import org.apache.drill.exec.store.dfs.FormatPlugin;
/**
* Abstract class for StorePlugin implementations.
* See StoragePlugin for description of the interface intent and its methods.
*/
public abstract class AbstractStoragePlugin implements StoragePlugin {
protected final DrillbitContext context;
private final String name;
protected AbstractStoragePlugin(DrillbitContext inContext, String inName) {
this.context = inContext;
this.name = inName == null ? null : inName.toLowerCase();
}
@Override
public boolean supportsRead() {
return false;
}
@Override
public boolean supportsWrite() {
return false;
}
/**
* @deprecated Marking for deprecation in next major version release. Use
* {@link #getOptimizerRules(org.apache.drill.exec.ops.OptimizerRulesContext, org.apache.drill.exec.planner.PlannerPhase)}
*/
@Override
@Deprecated
public Set<? extends RelOptRule> getOptimizerRules(OptimizerRulesContext optimizerContext) {
return ImmutableSet.of();
}
/**
* @deprecated Marking for deprecation in next major version release. Use
* {@link #getOptimizerRules(org.apache.drill.exec.ops.OptimizerRulesContext, org.apache.drill.exec.planner.PlannerPhase)}
*/
@Deprecated
public Set<? extends RelOptRule> getLogicalOptimizerRules(OptimizerRulesContext optimizerContext) {
return ImmutableSet.of();
}
/**
* @deprecated Marking for deprecation in next major version release. Use
* {@link #getOptimizerRules(org.apache.drill.exec.ops.OptimizerRulesContext, org.apache.drill.exec.planner.PlannerPhase)}
*/
@Deprecated
public Set<? extends RelOptRule> getPhysicalOptimizerRules(OptimizerRulesContext optimizerRulesContext) {
// To be backward compatible, by default call the getOptimizerRules() method.
return getOptimizerRules(optimizerRulesContext);
}
/**
*
* Note: Move this method to {@link StoragePlugin} interface in next major version release.
*/
public Set<? extends RelOptRule> getOptimizerRules(OptimizerRulesContext optimizerContext, PlannerPhase phase) {
switch (phase) {
case LOGICAL_PRUNE_AND_JOIN:
case LOGICAL_PRUNE:
case PARTITION_PRUNING:
return getLogicalOptimizerRules(optimizerContext);
case PHYSICAL:
return getPhysicalOptimizerRules(optimizerContext);
case LOGICAL:
case JOIN_PLANNING:
default:
return ImmutableSet.of();
}
}
@Override
public AbstractGroupScan getPhysicalScan(String userName, JSONOptions selection, SessionOptionManager options) throws IOException {
return getPhysicalScan(userName, selection);
}
@Override
public AbstractGroupScan getPhysicalScan(String userName, JSONOptions selection) throws IOException {
return getPhysicalScan(userName, selection, AbstractGroupScan.ALL_COLUMNS);
}
@Override
public AbstractGroupScan getPhysicalScan(String userName, JSONOptions selection, List<SchemaPath> columns, SessionOptionManager options) throws IOException {
return getPhysicalScan(userName, selection, columns);
}
@Override
public AbstractGroupScan getPhysicalScan(String userName, JSONOptions selection, List<SchemaPath> columns) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void start() throws IOException { }
@Override
public void close() throws Exception { }
@Override
public FormatPlugin getFormatPlugin(FormatPluginConfig config) {
throw new UnsupportedOperationException(String.format("%s doesn't support format plugins", getClass().getName()));
}
@Override
public String getName() {
return name;
}
public DrillbitContext getContext() {
return context;
}
}
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