Journal.PreallocationStrategy (ActiveMQ 5.17.0 API)

java.lang.Object
- java.lang.Enum<Journal.PreallocationStrategy>
- - org.apache.activemq.store.kahadb.disk.journal.Journal.PreallocationStrategy

All Implemented Interfaces:

Serializable, Comparable<Journal.PreallocationStrategy>

Enclosing class:

Journal
```
public static enum Journal.PreallocationStrategy
extends Enum<Journal.PreallocationStrategy>
```

Enum Constant Summary

Enum Constants
Enum Constant Description

CHUNKED_ZEROS

OS_KERNEL_COPY

SPARSE_FILE

ZEROS

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static Journal.PreallocationStrategy`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static Journal.PreallocationStrategy[]`	`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
  - SPARSE_FILE
```
public static final Journal.PreallocationStrategy SPARSE_FILE
```
  - OS_KERNEL_COPY
```
public static final Journal.PreallocationStrategy OS_KERNEL_COPY
```
  - ZEROS
```
public static final Journal.PreallocationStrategy ZEROS
```
  - CHUNKED_ZEROS
```
public static final Journal.PreallocationStrategy CHUNKED_ZEROS
```
- Method Detail
  - values
```
public static Journal.PreallocationStrategy[] 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 (Journal.PreallocationStrategy c : Journal.PreallocationStrategy.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static Journal.PreallocationStrategy valueOf(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:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null