| /* |
| * 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.parquet.cascading; |
| |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.OutputCollector; |
| import org.apache.hadoop.mapred.RecordReader; |
| import org.apache.thrift.TBase; |
| |
| import cascading.flow.FlowProcess; |
| import cascading.tap.Tap; |
| import org.apache.parquet.filter2.predicate.FilterPredicate; |
| import org.apache.parquet.hadoop.ParquetInputFormat; |
| import org.apache.parquet.hadoop.mapred.DeprecatedParquetInputFormat; |
| import org.apache.parquet.hadoop.mapred.DeprecatedParquetOutputFormat; |
| import org.apache.parquet.hadoop.thrift.ThriftReadSupport; |
| import org.apache.parquet.hadoop.thrift.TBaseWriteSupport; |
| import org.apache.parquet.thrift.TBaseRecordConverter; |
| |
| public class ParquetTBaseScheme<T extends TBase<?,?>> extends ParquetValueScheme<T> { |
| |
| // In the case of reads, we can read the thrift class from the file metadata |
| public ParquetTBaseScheme() { |
| this(new Config<T>()); |
| } |
| |
| public ParquetTBaseScheme(Class<T> thriftClass) { |
| this(new Config<T>().withRecordClass(thriftClass)); |
| } |
| |
| public ParquetTBaseScheme(FilterPredicate filterPredicate) { |
| this(new Config<T>().withFilterPredicate(filterPredicate)); |
| } |
| |
| public ParquetTBaseScheme(FilterPredicate filterPredicate, Class<T> thriftClass) { |
| this(new Config<T>().withRecordClass(thriftClass).withFilterPredicate(filterPredicate)); |
| } |
| |
| public ParquetTBaseScheme(Config<T> config) { |
| super(config); |
| } |
| |
| @Override |
| public void sourceConfInit(FlowProcess<? extends JobConf> fp, |
| Tap<JobConf, RecordReader, OutputCollector> tap, JobConf jobConf) { |
| super.sourceConfInit(fp, tap, jobConf); |
| jobConf.setInputFormat(DeprecatedParquetInputFormat.class); |
| ParquetInputFormat.setReadSupportClass(jobConf, ThriftReadSupport.class); |
| ThriftReadSupport.setRecordConverterClass(jobConf, TBaseRecordConverter.class); |
| } |
| |
| @Override |
| public void sinkConfInit(FlowProcess<? extends JobConf> fp, |
| Tap<JobConf, RecordReader, OutputCollector> tap, JobConf jobConf) { |
| |
| if (this.config.getKlass() == null) { |
| throw new IllegalArgumentException("To use ParquetTBaseScheme as a sink, you must specify a thrift class in the constructor"); |
| } |
| |
| DeprecatedParquetOutputFormat.setAsOutputFormat(jobConf); |
| DeprecatedParquetOutputFormat.setWriteSupportClass(jobConf, TBaseWriteSupport.class); |
| TBaseWriteSupport.<T>setThriftClass(jobConf, this.config.getKlass()); |
| } |
| } |