| /* |
| * 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.physical.impl.join; |
| |
| import org.apache.calcite.rel.core.JoinRelType; |
| import org.apache.calcite.sql.SqlKind; |
| import org.apache.drill.exec.exception.SchemaChangeException; |
| import org.apache.drill.exec.physical.impl.common.HashPartition; |
| import org.apache.drill.exec.physical.impl.setop.HashSetOpRecordBatch; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.record.VectorContainer; |
| |
| public interface Probe { |
| /* The probe side of the hash join can be in the following two states |
| * 1. PROBE_PROJECT: Inner join case, we probe our hash table to see if we have a |
| * key match and if we do we project the record |
| * 2. PROJECT_RIGHT: Right Outer or Full Outer joins where we are projecting the records |
| * from the build side that did not match any records on the probe side. For Left outer |
| * case we handle it internally by projecting the record if there isn't a match on the build side |
| * 3. DONE: Once we have projected all possible records we are done |
| */ |
| enum ProbeState { |
| PROBE_PROJECT, PROJECT_RIGHT, DONE |
| } |
| |
| default void setup(RecordBatch probeBatch, HashJoinBatch outgoing, JoinRelType joinRelType, boolean semiJoin, |
| RecordBatch.IterOutcome leftStartState, HashPartition[] partitions, int cycleNum, |
| VectorContainer container, AbstractHashBinaryRecordBatch.SpilledPartition[] spilledInners, |
| boolean buildSideIsEmpty, int numPartitions, int rightHVColPosition) throws SchemaChangeException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| default void setup(RecordBatch probeBatch, HashSetOpRecordBatch outgoing, SqlKind opType, boolean isAll, |
| RecordBatch.IterOutcome leftStartState, HashPartition[] partitions, int cycleNum, |
| VectorContainer container, AbstractHashBinaryRecordBatch.SpilledPartition[] spilledInners, |
| boolean buildSideIsEmpty, int numPartitions) throws SchemaChangeException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| int probeAndProject() throws SchemaChangeException; |
| void changeToFinalProbeState(); |
| void setTargetOutputCount(int targetOutputCount); |
| int getOutputCount(); |
| } |