fhueske commented on a change in pull request #6483: [FLINK-7243][flink-formats] Add parquet input format URL: https://github.com/apache/flink/pull/6483#discussion_r251984469
########## File path: flink-formats/flink-parquet/src/main/java/org/apache/flink/formats/parquet/utils/RowReadSupport.java ########## @@ -0,0 +1,54 @@ +/* + * 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.formats.parquet.utils; + +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.types.Row; + +import org.apache.hadoop.conf.Configuration; +import org.apache.parquet.hadoop.api.InitContext; +import org.apache.parquet.hadoop.api.ReadSupport; +import org.apache.parquet.io.api.RecordMaterializer; +import org.apache.parquet.schema.MessageType; + +import java.util.Map; + +import static org.apache.flink.util.Preconditions.checkNotNull; + +/** + * A Parquet {@link ReadSupport} implementation for reading Parquet record as {@link Row}. + */ +public class RowReadSupport extends ReadSupport<Row> { + + private TypeInformation<?> returnTypeInfo; + + @Override + public ReadContext init(InitContext initContext) { + checkNotNull(initContext, "initContext"); + returnTypeInfo = ParquetSchemaConverter.fromParquetType(initContext.getFileSchema()); + return new ReadContext(initContext.getFileSchema()); + } + + @Override + public RecordMaterializer<Row> prepareForRead( + Configuration configuration, Map<String, String> keyValueMetaData, + MessageType fileSchema, ReadContext readContext) { + return new RowMaterializer(fileSchema, returnTypeInfo); Review comment: use `ReadContext.getSchemaForRead()` instead of `fileSchema`? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
