RussellSpitzer commented on code in PR #12060: URL: https://github.com/apache/iceberg/pull/12060#discussion_r1927419737
########## core/src/main/java/org/apache/iceberg/InternalData.java: ########## @@ -0,0 +1,159 @@ +/* + * 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.iceberg; + +import java.io.IOException; +import java.util.Map; +import java.util.function.Function; +import org.apache.iceberg.avro.Avro; +import org.apache.iceberg.common.DynMethods; +import org.apache.iceberg.io.CloseableIterable; +import org.apache.iceberg.io.FileAppender; +import org.apache.iceberg.io.InputFile; +import org.apache.iceberg.io.OutputFile; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class InternalData { + private InternalData() {} + + private static final Logger LOG = LoggerFactory.getLogger(InternalData.class); + private static final Map<FileFormat, Function<OutputFile, WriteBuilder>> WRITE_BUILDERS = + Maps.newConcurrentMap(); + private static final Map<FileFormat, Function<InputFile, ReadBuilder>> READ_BUILDERS = + Maps.newConcurrentMap(); + + static { + Avro.register(); + + try { + DynMethods.StaticMethod registerParquet = + DynMethods.builder("register") + .impl("org.apache.iceberg.parquet.Parquet") + .buildStaticChecked(); + + registerParquet.invoke(); + + } catch (NoSuchMethodException e) { + // failing to load Parquet is normal and does not require a stack trace + LOG.info("Unable to register Parquet for metadata files: {}", e.getMessage()); + } + } + + public static void register( + FileFormat format, + Function<OutputFile, WriteBuilder> writeBuilder, + Function<InputFile, ReadBuilder> readBuilder) { + WRITE_BUILDERS.put(format, writeBuilder); + READ_BUILDERS.put(format, readBuilder); + } + + public static WriteBuilder write(FileFormat format, OutputFile file) { + Function<OutputFile, WriteBuilder> writeBuilder = WRITE_BUILDERS.get(format); + if (writeBuilder != null) { + return writeBuilder.apply(file); + } + + throw new UnsupportedOperationException( + "Cannot write using unregistered internal data format: " + format); + } + + public static ReadBuilder read(FileFormat format, InputFile file) { + Function<InputFile, ReadBuilder> readBuilder = READ_BUILDERS.get(format); + if (readBuilder != null) { + return readBuilder.apply(file); + } + + throw new UnsupportedOperationException( + "Cannot read using unregistered internal data format: " + format); + } + + public interface WriteBuilder { + /** Set the file schema. */ + WriteBuilder schema(Schema schema); + + /** Set the file schema's root name. */ + WriteBuilder named(String name); + + /** + * Set a writer configuration property. + * + * <p>Write configuration affects writer behavior. To add file metadata properties, use {@link + * #meta(String, String)}. + * + * @param property a writer config property name + * @param value config value + * @return this for method chaining + */ + WriteBuilder set(String property, String value); + + /** + * Set a file metadata property. + * + * <p>Metadata properties are written into file metadata. To alter a writer configuration + * property, use {@link #set(String, String)}. + * + * @param property a file metadata property name + * @param value config value + * @return this for method chaining + */ + WriteBuilder meta(String property, String value); + + /** + * Set a file metadata properties from a Map. Review Comment: ```suggestion * Set file metadata properties from a Map. ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
