Class DefaultFileSystemManager

java.lang.Object

org.apache.commons.vfs.impl.DefaultFileSystemManager

All Implemented Interfaces:

FileSystemManager

Direct Known Subclasses:

StandardFileSystemManager

public class DefaultFileSystemManager
extends Object
implements FileSystemManager

A default file system manager implementation.

Version:

$Revision: 484648 $ $Date: 2006-03-30 21:16:24 +0200 (Do, 30 Mrz 2006) $

Author:

Adam Murdoch

Constructor Summary

Constructors

Constructor	Description
DefaultFileSystemManager()

Method Summary

Modifier and Type	Method	Description
void	_closeFileSystem(FileSystem filesystem)	Closes the given filesystem. If you use VFS as singleton it is VERY dangerous to call this method
void	addExtensionMap(String extension, String scheme)	Adds an filename extension mapping.
void	addMimeTypeMap(String mimeType, String scheme)	Adds a mime type mapping.
void	addOperationProvider(String[] schemes, FileOperationProvider operationProvider)
void	addOperationProvider(String scheme, FileOperationProvider operationProvider)	Adds the specified FileOperationProvider for the specified scheme.
void	addProvider(String[] urlSchemes, FileProvider provider)	Registers a file system provider.
void	addProvider(String urlScheme, FileProvider provider)	Registers a file system provider.
boolean	canCreateFileSystem(FileObject file)	Determines if a layered file system can be created for a given file.
void	close()	Closes all files created by this manager, and cleans up any temporary files.
void	closeFileSystem(FileSystem filesystem)	Closes the given filesystem. If you use VFS as singleton it is VERY dangerous to call this method
FileObject	createFileSystem(String scheme, FileObject file)	Creates a layered file system.
FileObject	createFileSystem(FileObject file)	Creates a layered file system.
FileObject	createVirtualFileSystem(String rootUri)	Creates an empty virtual file system.
FileObject	createVirtualFileSystem(FileObject rootFile)	Creates a virtual file system.
void	freeUnusedResources()	Free all resources used by unused filesystems created by this manager.
FileObject	getBaseFile()	Returns the base file used to resolve relative URI.
CacheStrategy	getCacheStrategy()	Get the cache strategy used
FileContentInfoFactory	getFileContentInfoFactory()	get the fileContentInfoFactory used to determine the infos of a file content.
Class	getFileObjectDecorator()	Get the file object decorator used
Constructor	getFileObjectDecoratorConst()	The constructor associated to the fileObjectDecorator.
FilesCache	getFilesCache()	Returns the filesCache implementation used to cache files
FileSystemConfigBuilder	getFileSystemConfigBuilder(String scheme)	Get the configuration builder for the given scheme
protected org.apache.commons.logging.Log	getLogger()	Returns the logger used by this manager.
FileOperationProvider[]	getOperationProviders(String scheme)
Collection	getProviderCapabilities(String scheme)	Get the capabilities for a given scheme.
FileReplicator	getReplicator()	Returns the file replicator.
String[]	getSchemes()	Get the schemes currently available.
TemporaryFileStore	getTemporaryFileStore()	Returns the temporary file store.
URLStreamHandlerFactory	getURLStreamHandlerFactory()	Get the URLStreamHandlerFactory.
boolean	hasProvider(String scheme)	Returns true if this manager has a provider for a particular scheme.
void	init()	Initialises this manager.
FileObject	resolveFile(File baseFile, String uri)	Locates a file by URI.
FileObject	resolveFile(String uri)	Locates a file by URI.
FileObject	resolveFile(String uri, FileSystemOptions fileSystemOptions)	Locate a file by URI, use the FileSystemOptions for file-system creation
FileObject	resolveFile(FileObject baseFile, String uri)	Resolves a URI, relative to a base file.
FileObject	resolveFile(FileObject baseFile, String uri, FileSystemOptions fileSystemOptions)	Resolves a URI, realtive to a base file with specified FileSystem configuration
FileName	resolveName(FileName root, String path)	Resolves a name, relative to the file.
FileName	resolveName(FileName base, String name, NameScope scope)	Resolves a name, relative to the root.
FileName	resolveURI(String uri)	resolve the uri to a filename
void	setBaseFile(File baseFile)	Sets the base file to use when resolving relative URI.
void	setBaseFile(FileObject baseFile)	Sets the base file to use when resolving relative URI.
void	setCacheStrategy(CacheStrategy fileCacheStrategy)	Set the cache strategy to use when dealing with file object data.
void	setDefaultProvider(FileProvider provider)	Sets the default provider.
void	setFileContentInfoFactory(FileContentInfoFactory fileContentInfoFactory)	set the fileContentInfoFactory used to determine the infos of a file content.
void	setFileObjectDecorator(Class fileObjectDecorator)	set a fileObject decorator to be used for ALL returned file objects
void	setFilesCache(FilesCache filesCache)	Sets the filesCache implementation used to cache files
void	setLogger(org.apache.commons.logging.Log log)	Sets the logger to use.
void	setReplicator(FileReplicator replicator)	Sets the file replicator to use.
void	setTemporaryFileStore(TemporaryFileStore tempFileStore)	Sets the temporary file store to use.
FileObject	toFileObject(File file)	Converts a local file into a FileObject.

Methods inherited from class Object

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

Constructor Details

DefaultFileSystemManager

public DefaultFileSystemManager()

Method Details

getLogger

protected org.apache.commons.logging.Log getLogger()

Returns the logger used by this manager.

addProvider

public void addProvider(String urlScheme,
 FileProvider provider)
                 throws FileSystemException

Registers a file system provider. The manager takes care of all lifecycle management. A provider may be registered multiple times.

Parameters:

urlScheme - The scheme the provider will handle.

provider - The provider.

Throws:

FileSystemException

addProvider

public void addProvider(String[] urlSchemes,
 FileProvider provider)
                 throws FileSystemException

Registers a file system provider. The manager takes care of all lifecycle management. A provider may be registered multiple times.

Parameters:

urlSchemes - The schemes the provider will handle.

provider - The provider.

Throws:

FileSystemException

hasProvider

public boolean hasProvider(String scheme)

Returns true if this manager has a provider for a particular scheme.

addExtensionMap

public void addExtensionMap(String extension,
 String scheme)

Adds an filename extension mapping.

Parameters:

extension - The file name extension.

scheme - The scheme to use for files with this extension.

addMimeTypeMap

public void addMimeTypeMap(String mimeType,
 String scheme)

Adds a mime type mapping.

Parameters:

mimeType - The mime type.

scheme - The scheme to use for files with this mime type.

setDefaultProvider

public void setDefaultProvider(FileProvider provider)
                        throws FileSystemException

Sets the default provider. This is the provider that will handle URI with unknown schemes. The manager takes care of all lifecycle management.

Throws:

FileSystemException

getFilesCache

public FilesCache getFilesCache()

Returns the filesCache implementation used to cache files

Specified by:

getFilesCache in interface FileSystemManager

setFilesCache

public void setFilesCache(FilesCache filesCache)
                   throws FileSystemException

Sets the filesCache implementation used to cache files

Throws:

FileSystemException

setCacheStrategy

public void setCacheStrategy(CacheStrategy fileCacheStrategy)
                      throws FileSystemException

Set the cache strategy to use when dealing with file object data. You can set it only once before the FileSystemManager is initialized.

The default is CacheStrategy.ON_RESOLVE

Throws:

FileSystemException - if this is not possible. e.g. it is already set.

getCacheStrategy

public CacheStrategy getCacheStrategy()

Get the cache strategy used

Specified by:

getCacheStrategy in interface FileSystemManager

getFileObjectDecorator

public Class getFileObjectDecorator()

Get the file object decorator used

Specified by:

getFileObjectDecorator in interface FileSystemManager

getFileObjectDecoratorConst

public Constructor getFileObjectDecoratorConst()

The constructor associated to the fileObjectDecorator. We cache it here for performance reasons.

Specified by:

getFileObjectDecoratorConst in interface FileSystemManager

setFileObjectDecorator

public void setFileObjectDecorator(Class fileObjectDecorator)
                            throws FileSystemException

set a fileObject decorator to be used for ALL returned file objects

Parameters:

fileObjectDecorator - must be inherted from DecoratedFileObject a has to provide a constructor with a single FileObject as argument

Throws:

FileSystemException

getFileContentInfoFactory

public FileContentInfoFactory getFileContentInfoFactory()

get the fileContentInfoFactory used to determine the infos of a file content.

Specified by:

getFileContentInfoFactory in interface FileSystemManager

setFileContentInfoFactory

public void setFileContentInfoFactory(FileContentInfoFactory fileContentInfoFactory)
                               throws FileSystemException

set the fileContentInfoFactory used to determine the infos of a file content.

Throws:

FileSystemException

setReplicator

public void setReplicator(FileReplicator replicator)
                   throws FileSystemException

Sets the file replicator to use. The manager takes care of all lifecycle management.

Throws:

FileSystemException

setTemporaryFileStore

public void setTemporaryFileStore(TemporaryFileStore tempFileStore)
                           throws FileSystemException

Sets the temporary file store to use. The manager takes care of all lifecycle management.

Throws:

FileSystemException

setLogger

public void setLogger(org.apache.commons.logging.Log log)

Sets the logger to use.

Specified by:

setLogger in interface FileSystemManager

getReplicator

public FileReplicator getReplicator()
                             throws FileSystemException

Returns the file replicator.

Returns:

The file replicator. Never returns null.

Throws:

FileSystemException

getTemporaryFileStore

public TemporaryFileStore getTemporaryFileStore()
                                         throws FileSystemException

Returns the temporary file store.

Returns:

The file store. Never returns null.

Throws:

FileSystemException

init

public void init()
          throws FileSystemException

Initialises this manager.

Throws:

FileSystemException

close

public void close()

Closes all files created by this manager, and cleans up any temporary files. Also closes all providers and the replicator.

freeUnusedResources

public void freeUnusedResources()

Free all resources used by unused filesystems created by this manager.

setBaseFile

public void setBaseFile(FileObject baseFile)
                 throws FileSystemException

Sets the base file to use when resolving relative URI.

Throws:

FileSystemException

setBaseFile

public void setBaseFile(File baseFile)
                 throws FileSystemException

Sets the base file to use when resolving relative URI.

Throws:

FileSystemException

getBaseFile

public FileObject getBaseFile()
                       throws FileSystemException

Returns the base file used to resolve relative URI.

Specified by:

getBaseFile in interface FileSystemManager

Throws:

FileSystemException

resolveFile

public FileObject resolveFile(String uri)
                       throws FileSystemException

Locates a file by URI.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

uri - The name of the file.

Returns:

The file. Never returns null.

Throws:

FileSystemException - On error parsing the file name.

resolveFile

public FileObject resolveFile(String uri,
 FileSystemOptions fileSystemOptions)
                       throws FileSystemException

Locate a file by URI, use the FileSystemOptions for file-system creation

Specified by:

resolveFile in interface FileSystemManager

Parameters:

uri - The name of the file.

fileSystemOptions - The FileSystemOptions used for FileSystem creation

Returns:

The file. Never returns null.

Throws:

FileSystemException - On error parsing the file name.

resolveFile

public FileObject resolveFile(File baseFile,
 String uri)
                       throws FileSystemException

Locates a file by URI.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

baseFile - The base file to use to resolve relative paths. May be null.

uri - The name of the file.

Returns:

The file. Never returns null.

Throws:

FileSystemException - On error parsing the file name.

resolveFile

public FileObject resolveFile(FileObject baseFile,
 String uri)
                       throws FileSystemException

Resolves a URI, relative to a base file.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

baseFile - The base file to use to resolve relative paths. May be null.

uri - The name of the file.

Returns:

The file. Never returns null.

Throws:

FileSystemException - On error parsing the file name.

resolveFile

public FileObject resolveFile(FileObject baseFile,
 String uri,
 FileSystemOptions fileSystemOptions)
                       throws FileSystemException

Resolves a URI, realtive to a base file with specified FileSystem configuration

Throws:

FileSystemException

resolveName

public FileName resolveName(FileName root,
 String path)
                     throws FileSystemException

Resolves a name, relative to the file. If the supplied name is an absolute path, then it is resolved relative to the root of the file system that the file belongs to. If a relative name is supplied, then it is resolved relative to this file name.

Specified by:

resolveName in interface FileSystemManager

Parameters:

root - the base filename

path - The name to resolve.

Returns:

A FileName object representing the resolved file name.

Throws:

FileSystemException - If the name is invalid.

resolveName

public FileName resolveName(FileName base,
 String name,
 NameScope scope)
                     throws FileSystemException

Resolves a name, relative to the root.

Specified by:

resolveName in interface FileSystemManager

Parameters:

base - the base filename

name - the name

scope - the NameScope

Returns:

A FileName object representing the resolved file name.

Throws:

FileSystemException

resolveURI

public FileName resolveURI(String uri)
                    throws FileSystemException

resolve the uri to a filename

Specified by:

resolveURI in interface FileSystemManager

Throws:

FileSystemException

toFileObject

public FileObject toFileObject(File file)
                        throws FileSystemException

Converts a local file into a FileObject.

Specified by:

toFileObject in interface FileSystemManager

Parameters:

file - The file to convert.

Returns:

The FileObject that represents the local file. Never returns null.

Throws:

FileSystemException - On error converting the file.

createFileSystem

public FileObject createFileSystem(String scheme,
 FileObject file)
                            throws FileSystemException

Creates a layered file system.

Specified by:

createFileSystem in interface FileSystemManager

Parameters:

scheme - The name of the file system provider to use. This name is the same as the scheme used in URI to identify the provider.

file - The file to use to create the file system.

Returns:

The root file of the new file system.

Throws:

FileSystemException - On error creating the file system.

createFileSystem

public FileObject createFileSystem(FileObject file)
                            throws FileSystemException

Creates a layered file system.

Specified by:

createFileSystem in interface FileSystemManager

Parameters:

file - The file to use to create the file system.

Returns:

The root file of the new file system.

Throws:

FileSystemException - On error creating the file system.

canCreateFileSystem

public boolean canCreateFileSystem(FileObject file)
                            throws FileSystemException

Determines if a layered file system can be created for a given file.

Specified by:

canCreateFileSystem in interface FileSystemManager

Parameters:

file - The file to check for.

Throws:

FileSystemException

createVirtualFileSystem

public FileObject createVirtualFileSystem(FileObject rootFile)
                                   throws FileSystemException

Creates a virtual file system.

Specified by:

createVirtualFileSystem in interface FileSystemManager

Parameters:

rootFile - The root file to backs the file system.

Returns:

The root of the new file system.

Throws:

FileSystemException

createVirtualFileSystem

public FileObject createVirtualFileSystem(String rootUri)
                                   throws FileSystemException

Creates an empty virtual file system.

Specified by:

createVirtualFileSystem in interface FileSystemManager

Parameters:

rootUri - The root URI to use for the new file system. Can be null.

Returns:

The root file of the new file system.

Throws:

FileSystemException

getURLStreamHandlerFactory

public URLStreamHandlerFactory getURLStreamHandlerFactory()

Get the URLStreamHandlerFactory.

Specified by:

getURLStreamHandlerFactory in interface FileSystemManager

closeFileSystem

public void closeFileSystem(FileSystem filesystem)

Closes the given filesystem.
If you use VFS as singleton it is VERY dangerous to call this method

Specified by:

closeFileSystem in interface FileSystemManager

_closeFileSystem

public void _closeFileSystem(FileSystem filesystem)

Closes the given filesystem.
If you use VFS as singleton it is VERY dangerous to call this method

getSchemes

public String[] getSchemes()

Get the schemes currently available.

Specified by:

getSchemes in interface FileSystemManager

getProviderCapabilities

public Collection getProviderCapabilities(String scheme)
                                   throws FileSystemException

Get the capabilities for a given scheme.

Specified by:

getProviderCapabilities in interface FileSystemManager

Throws:

FileSystemException - if the given scheme is not konwn

getFileSystemConfigBuilder

public FileSystemConfigBuilder getFileSystemConfigBuilder(String scheme)
                                                   throws FileSystemException

Get the configuration builder for the given scheme

Specified by:

getFileSystemConfigBuilder in interface FileSystemManager

Throws:

FileSystemException - if the given scheme is not konwn

addOperationProvider

public void addOperationProvider(String scheme,
 FileOperationProvider operationProvider)
                          throws FileSystemException

Adds the specified FileOperationProvider for the specified scheme. Several FileOperationProvider's might be registered for the same scheme. For example, for "file" scheme we can register SvnWsOperationProvider and CvsOperationProvider.

Specified by:

addOperationProvider in interface FileSystemManager

Parameters:

scheme -

operationProvider -

Throws:

FileSystemException

addOperationProvider

public void addOperationProvider(String[] schemes,
 FileOperationProvider operationProvider)
                          throws FileSystemException

Specified by:

addOperationProvider in interface FileSystemManager

Parameters:

schemes -

operationProvider -

Throws:

FileSystemException

See Also:

• FileSystemManager.addOperationProvider(String, org.apache.commons.vfs.operations.FileOperationProvider)

getOperationProviders

public FileOperationProvider[] getOperationProviders(String scheme)
                                              throws FileSystemException

Specified by:

getOperationProviders in interface FileSystemManager

Parameters:

scheme - the scheme for wich we want to get the list af registered providers.

Returns:

the registered FileOperationProviders for the specified scheme. If there were no providers registered for the scheme, it returns null.

Throws:

FileSystemException