org.apache.aries.util.filesystem.impl
Class CloseableDirectory

java.lang.Object
  org.apache.aries.util.filesystem.impl.CloseableDirectory

All Implemented Interfaces:

Closeable, Iterable<IFile>, ICloseableDirectory, IDirectory, IFile

Direct Known Subclasses:

InputStreamClosableDirectory, NestedCloseableDirectory, ZipCloseableDirectory

public class CloseableDirectory
extends Object
implements ICloseableDirectory

Field Summary

protected IDirectory

delegate

Constructor Summary

CloseableDirectory(IDirectory delegate)

Method Summary

protected void	checkNotClosed()
protected void	cleanup()
void	close()
IDirectory	convert()
IDirectory	convertNested()
IFile	getFile(String name) Gets the requested file under this directory.
long	getLastModified()
String	getName()
IDirectory	getParent()
IDirectory	getRoot()
long	getSize()
boolean	isClosed() Checks whether the closeable directory has been closed
boolean	isDirectory()
boolean	isFile()
boolean	isRoot()
Iterator<IFile>	iterator()
List<IFile>	listAllFiles()
List<IFile>	listFiles()
InputStream	open() The input stream returned by this method should always be closed after use.
ICloseableDirectory	toCloseable() Open a more effective implementation with user regulated resource management.
URL	toURL()

Methods inherited from class java.lang.Object

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

Field Detail

delegate

protected IDirectory delegate

Constructor Detail

CloseableDirectory

public CloseableDirectory(IDirectory delegate)

Method Detail

getName

public String getName()

Specified by:

getName in interface IFile

Returns:

the name of the file relative to the root of the virtual FS. This will return a '/' separated path indepedent of underlying filesystem

isDirectory

public boolean isDirectory()

Specified by:

isDirectory in interface IFile

Returns:

true iff this IFile is also an IDirectory

isFile

public boolean isFile()

Specified by:

isFile in interface IFile

Returns:

true iff this IFile is not an IDirectory

getLastModified

public long getLastModified()

Specified by:

getLastModified in interface IFile

Returns:

the last modified date of the file.

getFile

public IFile getFile(String name)

Description copied from interface: IDirectory

Gets the requested file under this directory. The file may be located any number of levels within this directory. The name is relative to this directory. If the file cannot be found it will return null.

Specified by:

getFile in interface IDirectory

Parameters:

name - the name of the file.

Returns:

the IFile, or null if no such file exists.

getSize

public long getSize()

Specified by:

getSize in interface IFile

Returns:

the size of the file.

convert

public IDirectory convert()

Specified by:

convert in interface IFile

Returns:

if this is a directory return this as an IDirectory, otherwise return null.

convertNested

public IDirectory convertNested()

Specified by:

convertNested in interface IFile

Returns:

if this is a directory or an archive, returns the opened IDirectory

isRoot

public boolean isRoot()

Specified by:

isRoot in interface IDirectory

Returns:

true if this IDirectory is the root of the virtual file system.

getParent

public IDirectory getParent()

Specified by:

getParent in interface IFile

Returns:

returns the parent directory of this IFile, or null if this is the root.

getRoot

public IDirectory getRoot()

Specified by:

getRoot in interface IFile

Returns:

the root of this file system.

iterator

public Iterator<IFile> iterator()

Specified by:

iterator in interface Iterable<IFile>

listFiles

public List<IFile> listFiles()

Specified by:

listFiles in interface IDirectory

Returns:

the list of files in this directory. Files must be in this directory and not in sub-directories.

listAllFiles

public List<IFile> listAllFiles()

Specified by:

listAllFiles in interface IDirectory

Returns:

the list of files in all directories (including sub-directories). This is the complete list.

toCloseable

public ICloseableDirectory toCloseable()

Description copied from interface: IDirectory

Open a more effective implementation with user regulated resource management. The implementation will be more efficient for batch operations. Make sure to call close when finished with the returned IDirectory. IFiles and IDirectories other than the returned closeable directory will stay valid after calling the close method but will no longer perform as efficiently. InputStreams that are open at the time of calling close may be invalidated.

Specified by:

toCloseable in interface IDirectory

Returns:

ICloseableDirectory or null if a batch aware version of this IDirectory is not supported

open

public InputStream open()
                 throws IOException,
                        UnsupportedOperationException

Description copied from interface: IFile

The input stream returned by this method should always be closed after use.

Specified by:

open in interface IFile

Returns:

An InputStream to read the file from.

Throws:

IOException

UnsupportedOperationException - If the IFile is also an IDirectory.

toURL

public URL toURL()
          throws MalformedURLException

Specified by:

toURL in interface IFile

Returns:

a URL that can be used to get at this file at a later date.

Throws:

MalformedURLException

close

public final void close()
                 throws IOException

Specified by:

close in interface Closeable

Throws:

IOException

cleanup

protected void cleanup()

checkNotClosed

protected void checkNotClosed()

isClosed

public boolean isClosed()

Description copied from interface: ICloseableDirectory

Checks whether the closeable directory has been closed

Specified by:

isClosed in interface ICloseableDirectory