mikedias commented on code in PR #742: URL: https://github.com/apache/incubator-xtable/pull/742#discussion_r2484413662
########## xtable-core/src/main/java/org/apache/xtable/paimon/PaimonDataFileExtractor.java: ########## @@ -0,0 +1,94 @@ +/* + * 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.xtable.paimon; + +import java.util.*; + +import org.apache.paimon.Snapshot; +import org.apache.paimon.io.DataFileMeta; +import org.apache.paimon.manifest.ManifestEntry; +import org.apache.paimon.table.FileStoreTable; +import org.apache.paimon.table.source.snapshot.SnapshotReader; + +import org.apache.xtable.model.stat.ColumnStat; +import org.apache.xtable.model.storage.InternalDataFile; + +public class PaimonDataFileExtractor { + + private final PaimonPartitionExtractor partitionExtractor = + PaimonPartitionExtractor.getInstance(); + + private static final PaimonDataFileExtractor INSTANCE = new PaimonDataFileExtractor(); + + public static PaimonDataFileExtractor getInstance() { + return INSTANCE; + } + + public List<InternalDataFile> toInternalDataFiles(FileStoreTable table, Snapshot snapshot) { + List<InternalDataFile> result = new ArrayList<>(); + Iterator<ManifestEntry> manifestEntryIterator = + newSnapshotReader(table, snapshot).readFileIterator(); + while (manifestEntryIterator.hasNext()) { + result.add(toInternalDataFile(table, manifestEntryIterator.next())); + } + return result; + } + + private InternalDataFile toInternalDataFile(FileStoreTable table, ManifestEntry entry) { + return InternalDataFile.builder() + .physicalPath(toFullPhysicalPath(table, entry)) + .fileSizeBytes(entry.file().fileSize()) + .lastModified(entry.file().creationTimeEpochMillis()) + .recordCount(entry.file().rowCount()) + .partitionValues(partitionExtractor.toPartitionValues(table, entry.partition())) + .columnStats(toColumnStats(entry.file())) + .build(); + } + + private String toFullPhysicalPath(FileStoreTable table, ManifestEntry entry) { + String basePath = table.location().toString(); + String bucketPath = "bucket-" + entry.bucket(); + String filePath = entry.file().fileName(); + + Optional<String> partitionPath = partitionExtractor.toPartitionPath(table, entry.partition()); + if (partitionPath.isPresent()) { + return String.join("/", basePath, partitionPath.get(), bucketPath, filePath); + } else { + return String.join("/", basePath, bucketPath, filePath); + } + } + + private List<ColumnStat> toColumnStats(DataFileMeta file) { + // TODO: Implement logic to extract column stats from the file meta Review Comment: https://github.com/apache/incubator-xtable/issues/755 -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
