| /* |
| * 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.protocol; |
| |
| import org.apache.drill.exec.record.RecordBatch; |
| import org.apache.drill.exec.record.selection.SelectionVector2; |
| import org.apache.drill.exec.record.selection.SelectionVector4; |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * Extension of the container accessor that holds an optional selection |
| * vector, presenting the batch row count as the selection vector |
| * count. |
| */ |
| |
| public class IndirectContainerAccessor extends VectorContainerAccessor { |
| |
| private SelectionVector2 sv2; |
| private SelectionVector4 sv4; |
| |
| /** |
| * Add a record batch, performing schema checks and picking out a |
| * selection vector, if provided. |
| * |
| * @param batch batch of records in record batch format |
| */ |
| |
| public void addBatch(RecordBatch batch) { |
| addBatch(batch.getContainer()); |
| switch (container.getSchema().getSelectionVectorMode()) { |
| case TWO_BYTE: |
| setSelectionVector(batch.getSelectionVector2()); |
| break; |
| case FOUR_BYTE: |
| setSelectionVector(batch.getSelectionVector4()); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| public void setSelectionVector(SelectionVector2 sv2) { |
| Preconditions.checkState(sv4 == null); |
| this.sv2 = sv2; |
| } |
| |
| public void setSelectionVector(SelectionVector4 sv4) { |
| Preconditions.checkState(sv2 == null); |
| this.sv4 = sv4; |
| } |
| |
| @Override |
| public SelectionVector2 selectionVector2() { |
| return sv2; |
| } |
| |
| @Override |
| public SelectionVector4 selectionVector4() { |
| return sv4; |
| } |
| |
| @Override |
| public int rowCount() { |
| if (sv2 != null) { |
| return sv2.getCount(); |
| } else if (sv4 != null) { |
| return sv4.getCount(); |
| } else { |
| return super.rowCount(); |
| } |
| } |
| |
| @Override |
| public void release() { |
| super.release(); |
| if (sv2 != null) { |
| sv2.clear(); |
| sv2 = null; |
| } |
| if (sv4 != null) { |
| sv4.clear(); |
| sv4 = null; |
| } |
| } |
| } |