| /* |
| * 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.flink.orc; |
| |
| import org.apache.flink.core.fs.Path; |
| import org.apache.flink.orc.shim.OrcShim; |
| import org.apache.flink.table.data.ColumnarRowData; |
| import org.apache.flink.table.data.RowData; |
| import org.apache.flink.table.data.vector.VectorizedColumnBatch; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.orc.TypeDescription; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** {@link OrcSplitReader} to read ORC files into {@link RowData}. */ |
| public class OrcColumnarRowSplitReader<BATCH> extends OrcSplitReader<RowData, BATCH> { |
| |
| // the vector of rows that is read in a batch |
| private final VectorizedColumnBatch columnarBatch; |
| |
| private final ColumnarRowData row; |
| |
| public OrcColumnarRowSplitReader( |
| OrcShim<BATCH> shim, |
| Configuration conf, |
| TypeDescription schema, |
| int[] selectedFields, |
| ColumnBatchGenerator<BATCH> batchGenerator, |
| List<OrcFilters.Predicate> conjunctPredicates, |
| int batchSize, |
| Path path, |
| long splitStart, |
| long splitLength) |
| throws IOException { |
| super( |
| shim, |
| conf, |
| schema, |
| selectedFields, |
| conjunctPredicates, |
| batchSize, |
| path, |
| splitStart, |
| splitLength); |
| |
| this.columnarBatch = batchGenerator.generate(rowBatchWrapper.getBatch()); |
| this.row = new ColumnarRowData(columnarBatch); |
| } |
| |
| @Override |
| protected int fillRows() { |
| int size = rowBatchWrapper.size(); |
| columnarBatch.setNumRows(size); |
| return size; |
| } |
| |
| @Override |
| public RowData nextRecord(RowData reuse) { |
| // return the next row |
| row.setRowId(this.nextRow++); |
| return row; |
| } |
| |
| /** Interface to gen {@link VectorizedColumnBatch}. */ |
| public interface ColumnBatchGenerator<BATCH> { |
| VectorizedColumnBatch generate(BATCH rowBatch); |
| } |
| } |