Package org.jrobin.core

Class RrdJRobin14FileBackendFactory

java.lang.Object

org.jrobin.core.RrdBackendFactory

org.jrobin.core.RrdJRobin14FileBackendFactory

public class RrdJRobin14FileBackendFactory
extends RrdBackendFactory

Factory class which creates actual RrdFileBackend objects. This was the default backend factory in JRobin before 1.4.0 release.

Field Summary

Fields

Modifier and Type	Field	Description
static String	NAME	factory name, "FILE"

Constructor Summary

Constructors

Constructor	Description
RrdJRobin14FileBackendFactory()
RrdJRobin14FileBackendFactory(RrdJRobin14FileBackend.LockMode lockMode)

Method Summary

Modifier and Type	Method	Description
protected boolean	exists(String path)	Method to determine if a file with the given path already exists.
String	getFactoryName()	Returns the name of this factory.
protected RrdBackend	open(String path, boolean readOnly)	Creates RrdFileBackend object for the given file path.
String	toString()

Methods inherited from class org.jrobin.core.RrdBackendFactory

getDefaultFactory, getFactory, isInstanceCreated, registerAndSetAsDefaultFactory, registerFactory, setDefaultFactory

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NAME

public static final String NAME

factory name, "FILE"

See Also:

Constant Field Values

Constructor Detail

RrdJRobin14FileBackendFactory

public RrdJRobin14FileBackendFactory()

RrdJRobin14FileBackendFactory

public RrdJRobin14FileBackendFactory(RrdJRobin14FileBackend.LockMode lockMode)

Method Detail

open

protected RrdBackend open(String path,
                          boolean readOnly)
                   throws IOException

Creates RrdFileBackend object for the given file path.

Specified by:

open in class RrdBackendFactory

Parameters:

path - File path

readOnly - True, if the file should be accessed in read/only mode. False otherwise.

Returns:

RrdFileBackend object which handles all I/O operations for the given file path

Throws:

IOException - Thrown in case of I/O error.

exists

protected boolean exists(String path)

Method to determine if a file with the given path already exists.

Specified by:

exists in class RrdBackendFactory

Parameters:

path - File path

Returns:

True, if such file exists, false otherwise.

getFactoryName

public String getFactoryName()

Returns the name of this factory.

Specified by:

getFactoryName in class RrdBackendFactory

Returns:

Factory name (equals to string "FILE")

toString

public String toString()

Overrides:

toString in class RrdBackendFactory