de.waldheinz.fs
Class AbstractFileSystem

java.lang.Object
  de.waldheinz.fs.AbstractFileSystem

All Implemented Interfaces:

FileSystem

Direct Known Subclasses:

FatFileSystem

public abstract class AbstractFileSystem
extends Object
implements FileSystem

Abstract class with common things in different FileSystem implementations.

Author:

Fabien DUMINY, Matthias Treydte <waldheinz at gmail.com>

Constructor Summary

AbstractFileSystem(boolean readOnly)
Creates a new AbstractFileSystem.

Method Summary

protected void	checkClosed() Checks if this FileSystem was already closed, and throws an exception if it was.
protected void	checkReadOnly() Checks if this FileSystem is read-only, and throws an exception if it is.
void	close() Close this file system.
boolean	isClosed() Returns true if this file system is closed.
boolean	isReadOnly() Returns if this FileSystem is in read-only mode.

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.waldheinz.fs.FileSystem

flush, getFreeSpace, getRoot, getTotalSpace, getUsableSpace

Constructor Detail

AbstractFileSystem

public AbstractFileSystem(boolean readOnly)

Creates a new AbstractFileSystem.

Parameters:

readOnly - if the file system should be read-only

Method Detail

close

public void close()
           throws IOException

Description copied from interface: FileSystem

Close this file system. After a close, all invocations of methods of this file system or objects created by this file system will throw an IllegalStateException.

Specified by:

close in interface FileSystem

Throws:

IOException - on error closing the file system

isClosed

public final boolean isClosed()

Description copied from interface: FileSystem

Returns true if this file system is closed. If the file system is closed, no more operations may be performed on it.

Specified by:

isClosed in interface FileSystem

Returns:

if this file system is closed

isReadOnly

public final boolean isReadOnly()

Description copied from interface: FileSystem

Returns if this FileSystem is in read-only mode.

Specified by:

isReadOnly in interface FileSystem

Returns:

if this FileSystem is read-only

checkClosed

protected final void checkClosed()
                          throws IllegalStateException

Checks if this FileSystem was already closed, and throws an exception if it was.

Throws:

IllegalStateException - if this FileSystem was already closed

See Also:

isClosed(), close()

checkReadOnly

protected final void checkReadOnly()
                            throws ReadOnlyException

Checks if this FileSystem is read-only, and throws an exception if it is.

Throws:

ReadOnlyException - if this FileSystem is read-only

See Also:

isReadOnly()