Enum Class OpenOption

java.lang.Object

java.lang.Enum<OpenOption>

org.cojen.tupl.io.OpenOption

All Implemented Interfaces:

Serializable, Comparable<OpenOption>, Constable

public enum OpenOption
extends Enum<OpenOption>

Open options for FilePageArray.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
CLOSE_DONTNEED	Optional hint to apply at file close indicating that the file data will not be accessed in the near future.
CREATE	Create the file if it doesn't already exist.
DIRECT_IO	All file I/O should be durable and bypass the file system cache, if possible.
MAPPED	Map the file into main memory.
NON_DURABLE	File contents don't persist after an OS crash or power failure.
RANDOM_ACCESS	Indicate that file will be accessed in random order.
READ_ONLY	Open file in read-only mode.
READAHEAD	Optional hint to perform readahead on the file.
SYNC_IO	All file I/O should be durable.

Method Summary

Modifier and Type	Method	Description
static OpenOption	valueOf(String name)	Returns the enum constant of this class with the specified name.
static OpenOption[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

READ_ONLY

public static final OpenOption READ_ONLY

Open file in read-only mode.

CREATE

public static final OpenOption CREATE

Create the file if it doesn't already exist.

MAPPED

public static final OpenOption MAPPED

Map the file into main memory.

SYNC_IO

public static final OpenOption SYNC_IO

All file I/O should be durable.

DIRECT_IO

public static final OpenOption DIRECT_IO

All file I/O should be durable and bypass the file system cache, if possible.

NON_DURABLE

public static final OpenOption NON_DURABLE

File contents don't persist after an OS crash or power failure.

RANDOM_ACCESS

public static final OpenOption RANDOM_ACCESS

Indicate that file will be accessed in random order.

READAHEAD

public static final OpenOption READAHEAD

Optional hint to perform readahead on the file.

CLOSE_DONTNEED

public static final OpenOption CLOSE_DONTNEED

Optional hint to apply at file close indicating that the file data will not be accessed in the near future.

Method Details

values

public static OpenOption[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static OpenOption valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null