| /* |
| * 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.drill.exec.compile.TemplateClassDefinition; |
| import org.apache.drill.exec.ops.FragmentContext; |
| import org.apache.drill.exec.record.ExpandableHyperContainer; |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.record.VectorContainer; |
| |
| import java.util.LinkedList; |
| |
| /** |
| * Interface for the nested loop join operator. |
| */ |
| public interface NestedLoopJoin { |
| public static TemplateClassDefinition<NestedLoopJoin> TEMPLATE_DEFINITION = |
| new TemplateClassDefinition<>(NestedLoopJoin.class, NestedLoopJoinTemplate.class); |
| |
| public void setupNestedLoopJoin(FragmentContext context, RecordBatch left, |
| ExpandableHyperContainer rightContainer, |
| LinkedList<Integer> rightCounts, |
| NestedLoopJoinBatch outgoing); |
| |
| void setTargetOutputCount(int targetOutputCount); |
| |
| // Produce output records taking into account join type |
| public int outputRecords(JoinRelType joinType); |
| |
| // Project the record at offset 'leftIndex' in the left input batch into the output container at offset 'outIndex' |
| public void emitLeft(int leftIndex, int outIndex); |
| |
| // Project the record from the hyper container given the batch index and the record within the batch at 'outIndex' |
| public void emitRight(int batchIndex, int recordIndexWithinBatch, int outIndex); |
| |
| // Setup the input/output value vector references |
| public void doSetup(FragmentContext context, VectorContainer rightContainer, RecordBatch leftBatch, RecordBatch outgoing); |
| } |