CompactionStyle

java.lang.Object
- java.lang.Enum<CompactionStyle>
- - org.rocksdb.CompactionStyle

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<CompactionStyle>
```
public enum CompactionStyle
extends java.lang.Enum<CompactionStyle>
```
Enum CompactionStyle RocksDB supports different styles of compaction. Available compaction styles can be chosen using this enumeration.
1. LEVEL - Level based Compaction style
2. UNIVERSAL - Universal Compaction Style is a compaction style, targeting the use cases requiring lower write amplification, trading off read amplification and space amplification.
3. FIFO - FIFO compaction style is the simplest compaction strategy. It is suited for keeping event log data with very low overhead (query log for example). It periodically deletes the old data, so it's basically a TTL compaction style.
4. NONE - Disable background compaction. Compaction jobs are submitted RocksDB.compactFiles(CompactionOptions, ColumnFamilyHandle, List, int, int, CompactionJobInfo) ()}.
See Also:

Universal Compaction, FIFO Compaction

Enum Constant Summary

Enum Constants
Enum Constant Description

FIFO

LEVEL

NONE

UNIVERSAL

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte`	`getValue()`	Get the internal representation value.
`static CompactionStyle`	`valueOf(java.lang.String name)`	Returns the enum constant of this type with the specified name.
`static CompactionStyle[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - LEVEL
```
public static final CompactionStyle LEVEL
```
  - UNIVERSAL
```
public static final CompactionStyle UNIVERSAL
```
  - FIFO
```
public static final CompactionStyle FIFO
```
  - NONE
```
public static final CompactionStyle NONE
```
- Method Detail
  - values
```
public static CompactionStyle[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (CompactionStyle c : CompactionStyle.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static CompactionStyle valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
    
    java.lang.NullPointerException - if the argument is null
  - getValue
```
public byte getValue()
```
    Get the internal representation value.
    
    Returns:
    
    the internal representation value.