/*
* Licensed 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 com.facebook.presto.operator;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.sql.gen.JoinProbeCompiler;
import com.facebook.presto.sql.planner.plan.PlanNodeId;
import javax.inject.Inject;
import java.util.List;
import java.util.Optional;
import java.util.stream.IntStream;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static java.util.Objects.requireNonNull;
public class LookupJoinOperators
{
public enum JoinType
{
INNER,
PROBE_OUTER, // the Probe is the outer side of the join
LOOKUP_OUTER, // The LookupSource is the outer side of the join
FULL_OUTER,
}
private final JoinProbeCompiler joinProbeCompiler;
@Inject
public LookupJoinOperators(JoinProbeCompiler joinProbeCompiler)
{
this.joinProbeCompiler = requireNonNull(joinProbeCompiler, "joinProbeCompiler is null");
}
public OperatorFactory innerJoin(int operatorId, PlanNodeId planNodeId, LookupSourceFactory lookupSourceFactory, List<? extends Type> probeTypes, List<Integer> probeJoinChannel, Optional<Integer> probeHashChannel, Optional<List<Integer>> probeOutputChannels)
{
return joinProbeCompiler.compileJoinOperatorFactory(operatorId, planNodeId, lookupSourceFactory, probeTypes, probeJoinChannel, probeHashChannel, probeOutputChannels.orElse(rangeList(probeTypes.size())), JoinType.INNER);
}
public OperatorFactory probeOuterJoin(int operatorId, PlanNodeId planNodeId, LookupSourceFactory lookupSourceFactory, List<? extends Type> probeTypes, List<Integer> probeJoinChannel, Optional<Integer> probeHashChannel, Optional<List<Integer>> probeOutputChannels)
{
return joinProbeCompiler.compileJoinOperatorFactory(operatorId, planNodeId, lookupSourceFactory, probeTypes, probeJoinChannel, probeHashChannel, probeOutputChannels.orElse(rangeList(probeTypes.size())), JoinType.PROBE_OUTER);
}
public OperatorFactory lookupOuterJoin(int operatorId, PlanNodeId planNodeId, LookupSourceFactory lookupSourceFactory, List<? extends Type> probeTypes, List<Integer> probeJoinChannel, Optional<Integer> probeHashChannel, Optional<List<Integer>> probeOutputChannels)
{
return joinProbeCompiler.compileJoinOperatorFactory(operatorId, planNodeId, lookupSourceFactory, probeTypes, probeJoinChannel, probeHashChannel, probeOutputChannels.orElse(rangeList(probeTypes.size())), JoinType.LOOKUP_OUTER);
}
public OperatorFactory fullOuterJoin(int operatorId, PlanNodeId planNodeId, LookupSourceFactory lookupSourceFactory, List<? extends Type> probeTypes, List<Integer> probeJoinChannel, Optional<Integer> probeHashChannel, Optional<List<Integer>> probeOutputChannels)
{
return joinProbeCompiler.compileJoinOperatorFactory(operatorId, planNodeId, lookupSourceFactory, probeTypes, probeJoinChannel, probeHashChannel, probeOutputChannels.orElse(rangeList(probeTypes.size())), JoinType.FULL_OUTER);
}
private static List<Integer> rangeList(int endExclusive)
{
return IntStream.range(0, endExclusive)
.boxed()
.collect(toImmutableList());
}
}