| /* |
| * 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.store.parquet; |
| |
| import org.apache.drill.common.exceptions.DrillRuntimeException; |
| import org.apache.parquet.format.DataPageHeaderV2; |
| import org.apache.parquet.format.Encoding; |
| import org.apache.parquet.format.PageHeader; |
| import org.apache.parquet.format.Statistics; |
| |
| public interface DataPageHeaderInfoProvider { |
| int getNumValues(); |
| |
| Encoding getEncoding(); |
| |
| Encoding getDefinitionLevelEncoding(); |
| |
| Encoding getRepetitionLevelEncoding(); |
| |
| Statistics getStatistics(); |
| |
| class DataPageHeaderV1InfoProvider implements DataPageHeaderInfoProvider { |
| private final org.apache.parquet.format.DataPageHeader dataPageHeader; |
| |
| private DataPageHeaderV1InfoProvider(org.apache.parquet.format.DataPageHeader dataPageHeader) { |
| this.dataPageHeader = dataPageHeader; |
| } |
| |
| @Override |
| public int getNumValues() { |
| return dataPageHeader.getNum_values(); |
| } |
| |
| @Override |
| public Encoding getEncoding() { |
| return dataPageHeader.getEncoding(); |
| } |
| |
| @Override |
| public Encoding getDefinitionLevelEncoding() { |
| return dataPageHeader.getDefinition_level_encoding(); |
| } |
| |
| @Override |
| public Encoding getRepetitionLevelEncoding() { |
| return dataPageHeader.getRepetition_level_encoding(); |
| } |
| |
| @Override |
| public Statistics getStatistics() { |
| return dataPageHeader.getStatistics(); |
| } |
| } |
| |
| class DataPageHeaderV2InfoProvider implements DataPageHeaderInfoProvider { |
| private final DataPageHeaderV2 dataPageHeader; |
| |
| private DataPageHeaderV2InfoProvider(DataPageHeaderV2 dataPageHeader) { |
| this.dataPageHeader = dataPageHeader; |
| } |
| |
| @Override |
| public int getNumValues() { return dataPageHeader.getNum_values(); } |
| |
| @Override |
| public Encoding getEncoding() { |
| return dataPageHeader.getEncoding(); |
| } |
| |
| @Override |
| public Encoding getDefinitionLevelEncoding() { return Encoding.RLE; } |
| |
| @Override |
| public Encoding getRepetitionLevelEncoding() { return Encoding.RLE; } |
| |
| @Override |
| public Statistics getStatistics() { |
| return dataPageHeader.getStatistics(); |
| } |
| } |
| |
| static DataPageHeaderInfoProvider builder(PageHeader pageHeader) { |
| switch (pageHeader.getType()) { |
| case DATA_PAGE: |
| return new DataPageHeaderV1InfoProvider(pageHeader.getData_page_header()); |
| case DATA_PAGE_V2: |
| return new DataPageHeaderV2InfoProvider(pageHeader.getData_page_header_v2()); |
| default: |
| throw new DrillRuntimeException("Unsupported page header type:" + pageHeader.getType()); |
| } |
| } |
| } |