| /* |
| * 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.util.List; |
| |
| /** |
| * A scan task for deletes generated by removing a data file from the table. |
| * <p> |
| * Note that all historical delete files added earlier must be applied while reading the data file. |
| * This is required to output only those data records that were live when the data file was removed. |
| * <p> |
| * Suppose snapshot S1 contains data files F1, F2, F3. Then snapshot S2 adds a position delete file, D1, |
| * that deletes records from F2 and snapshot S3 removes F2 entirely. A scan for changes generated by S3 |
| * should include the following task: |
| * <ul> |
| * <li>DeletedDataFileScanTask(file=F2, existing-deletes=[D1], snapshot=S3)</li> |
| * </ul> |
| * <p> |
| * Readers consuming these tasks should produce deleted records with metadata like change ordinal and |
| * commit snapshot ID. |
| */ |
| public interface DeletedDataFileScanTask extends ChangelogScanTask, ContentScanTask<DataFile> { |
| /** |
| * A list of previously added {@link DeleteFile delete files} to apply when reading the data file in this task. |
| * |
| * @return a list of delete files to apply |
| */ |
| List<DeleteFile> existingDeletes(); |
| |
| @Override |
| default ChangelogOperation operation() { |
| return ChangelogOperation.DELETE; |
| } |
| } |