org.apache.iceberg.DataOperations Maven / Gradle / Ivy
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/*
* 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;
/**
* Data operations that produce snapshots.
*
* A snapshot can return the operation that created the snapshot to help other components ignore
* snapshots that are not needed for some tasks. For example, snapshot expiration does not need to
* clean up deleted files for appends, which have no deleted files.
*/
public class DataOperations {
private DataOperations() {
}
/**
* New data is appended to the table and no data is removed or deleted.
*
* This operation is implemented by {@link AppendFiles}.
*/
public static final String APPEND = "append";
/**
* Files are removed and replaced, without changing the data in the table.
*
* This operation is implemented by {@link RewriteFiles}.
*/
public static final String REPLACE = "replace";
/**
* New data is added to overwrite existing data.
*
* This operation is implemented by {@link OverwriteFiles} and {@link ReplacePartitions}.
*/
public static final String OVERWRITE = "overwrite";
/**
* Data is deleted from the table and no data is added.
*
* This operation is implemented by {@link DeleteFiles}.
*/
public static final String DELETE = "delete";
}