org.apache.hudi.common.model.HoodieOperation Maven / Gradle / Ivy
/*
* 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.hudi.common.model;
import org.apache.hudi.common.util.Option;
/**
* Represents the changes that a row can describe in a changelog.
*/
public enum HoodieOperation {
/**
* Insert operation.
*/
INSERT("I", (byte) 0),
/**
* Update operation with previous record content,
* should be used together with {@link #UPDATE_AFTER} for modeling an update operation.
*/
UPDATE_BEFORE("-U", (byte) 1),
/**
* Update operation with new record content.
*/
UPDATE_AFTER("U", (byte) 2),
/**
* Delete operation.
*/
DELETE("D", (byte) 3);
private final String name;
private final byte value;
HoodieOperation(String name, byte value) {
this.name = name;
this.value = value;
}
public String getName() {
return name;
}
public byte getValue() {
return value;
}
public static HoodieOperation fromValue(byte value) {
switch (value) {
case 0:
return INSERT;
case 1:
return UPDATE_BEFORE;
case 2:
return UPDATE_AFTER;
case 3:
return DELETE;
default:
throw new AssertionError();
}
}
public static HoodieOperation fromName(Option nameOpt) {
if (!nameOpt.isPresent()) {
return null;
}
return fromName(nameOpt.get());
}
public static HoodieOperation fromName(String name) {
switch (name) {
case "I":
return INSERT;
case "-U":
return UPDATE_BEFORE;
case "U":
return UPDATE_AFTER;
case "D":
return DELETE;
default:
throw new AssertionError();
}
}
/**
* Returns whether the operation is INSERT.
*/
public static boolean isInsert(HoodieOperation operation) {
return operation == INSERT;
}
/**
* Returns whether the operation is UPDATE_BEFORE.
*/
public static boolean isUpdateBefore(HoodieOperation operation) {
return operation == UPDATE_BEFORE;
}
/**
* Returns whether the operation is UPDATE_AFTER.
*/
public static boolean isUpdateAfter(HoodieOperation operation) {
return operation == UPDATE_AFTER;
}
/**
* Returns whether the operation is DELETE.
*/
public static boolean isDelete(HoodieOperation operation) {
return operation == DELETE;
}
}