org.apache.commons.vfs2.impl

Class DefaultFileSystemManager

java.lang.Object

org.apache.commons.vfs2.impl.DefaultFileSystemManager

All Implemented Interfaces:

AutoCloseable, FileSystemManager

Direct Known Subclasses:

StandardFileSystemManager

public class DefaultFileSystemManager
extends Object
implements FileSystemManager

The default file system manager implementation.

Constructor Summary

Constructors

Constructor and Description
DefaultFileSystemManager()

Method Summary

Modifier and Type	Method and Description
void	_closeFileSystem(FileSystem fileSystem) Closes the given file system.
void	addExtensionMap(String extension, String scheme) Adds an file name 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.
protected void	addVirtualFileSystemScheme(String rootUri)
boolean	canCreateFileSystem(FileObject file) Determines if a layered file system can be created for a given file.
void	close() Closes the manager.
void	closeFileSystem(FileSystem fileSystem) Closes the given file system.
FileObject	createFileSystem(FileObject file) Creates a layered file system.
FileObject	createFileSystem(String scheme, FileObject file) Creates a layered file system.
FileObject	createVirtualFileSystem(FileObject rootFile) Creates a virtual file system.
FileObject	createVirtualFileSystem(String rootUri) Creates an empty virtual file system.
void	freeUnusedResources() Free all resources used by unused file systems 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) Gets Providers for file operations.
Collection<Capability>	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() Initializes this manager.
void	removeProvider(String urlScheme) Unregisters a file system provider.
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, relative to a base file with specified FileSystem configuration.
FileObject	resolveFile(File baseFile, String uri) Resolves a URI, relative to base file.
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(URI uri) Converts a URI into a FileObject.
FileObject	resolveFile(URL url) Converts a URL into a FileObject.
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 file name.
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 java.lang.Object

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

Constructor Detail

DefaultFileSystemManager

public DefaultFileSystemManager()

Method Detail

_closeFileSystem

public void _closeFileSystem(FileSystem fileSystem)

Closes the given file system.

If you use VFS as singleton it is VERY dangerous to call this method

Parameters:

fileSystem - The FileSystem to close.

addExtensionMap

public void addExtensionMap(String extension,
                            String scheme)

Adds an file name 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.

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 - The scheme the provider should be registered for.

operationProvider - The FileOperationProvider.

Throws:

FileSystemException - if an error occurs adding the provider.

addOperationProvider

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

Specified by:

addOperationProvider in interface FileSystemManager

Parameters:

schemes - The array of schemes the provider should apply to.

operationProvider - The FileOperationProvider.

Throws:

FileSystemException - if an error occurs.

See Also:

FileSystemManager.addOperationProvider(String, org.apache.commons.vfs2.operations.FileOperationProvider)

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. The first LocalFileProvider added will be remembered for getLocalFileProvider().

Parameters:

urlScheme - The scheme the provider will handle.

provider - The provider.

Throws:

FileSystemException - if an error occurs adding the provider.

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. The first LocalFileProvider added will be remembered for getLocalFileProvider().

Parameters:

urlSchemes - The schemes the provider will handle.

provider - The provider.

Throws:

FileSystemException - if an error occurs adding the provider.

addVirtualFileSystemScheme

protected void addVirtualFileSystemScheme(String rootUri)

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.

Returns:

true if the FileSystem can be created.

Throws:

FileSystemException - if an error occurs.

close

public void close()

Closes the manager.

This will close all providers (all files), it will also close all managed components including temporary files, replicator, file cache and file operations.

The manager is in uninitialized state after this method.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface FileSystemManager

closeFileSystem

public void closeFileSystem(FileSystem fileSystem)

Closes the given file system.

If you use VFS as singleton it is VERY dangerous to call this method.

Specified by:

closeFileSystem in interface FileSystemManager

Parameters:

fileSystem - The FileSystem to close.

createFileSystem

public FileObject createFileSystem(FileObject file)
                            throws FileSystemException

Creates a layered file system.

Specified by:

createFileSystem in interface FileSystemManager

Parameters:

file - The FileObject to use.

Returns:

The layered FileObject.

Throws:

FileSystemException - if an error occurs.

createFileSystem

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

Creates a layered file system.

Specified by:

createFileSystem in interface FileSystemManager

Parameters:

scheme - The scheme to use.

file - The FileObject.

Returns:

The layered FileObject.

Throws:

FileSystemException - if an error occurs.

createVirtualFileSystem

public FileObject createVirtualFileSystem(FileObject rootFile)
                                   throws FileSystemException

Creates a virtual file system.

Specified by:

createVirtualFileSystem in interface FileSystemManager

Parameters:

rootFile - The FileObject to use.

Returns:

The FileObject in the VirtualFileSystem.

Throws:

FileSystemException - if an error occurs creating the file.

createVirtualFileSystem

public FileObject createVirtualFileSystem(String rootUri)
                                   throws FileSystemException

Creates an empty virtual file system.

Specified by:

createVirtualFileSystem in interface FileSystemManager

Parameters:

rootUri - The URI to use as the root of the FileSystem.

Returns:

A FileObject in the virtual FileSystem.

Throws:

FileSystemException - if an error occurs.

freeUnusedResources

public void freeUnusedResources()

Free all resources used by unused file systems created by this manager.

getBaseFile

public FileObject getBaseFile()
                       throws FileSystemException

Returns the base file used to resolve relative URI.

Specified by:

getBaseFile in interface FileSystemManager

Returns:

The FileObject that represents the base file.

Throws:

FileSystemException - if an error occurs.

getCacheStrategy

public CacheStrategy getCacheStrategy()

Get the cache strategy used.

Specified by:

getCacheStrategy in interface FileSystemManager

Returns:

The CacheStrategy.

getFileContentInfoFactory

public FileContentInfoFactory getFileContentInfoFactory()

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

Specified by:

getFileContentInfoFactory in interface FileSystemManager

Returns:

The FileContentInfoFactory.

getFileObjectDecorator

public Class<?> getFileObjectDecorator()

Get the file object decorator used.

Specified by:

getFileObjectDecorator in interface FileSystemManager

Returns:

The decorator.

getFileObjectDecoratorConst

public Constructor<?> getFileObjectDecoratorConst()

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

Specified by:

getFileObjectDecoratorConst in interface FileSystemManager

Returns:

The decorator's Constructor.

getFilesCache

public FilesCache getFilesCache()

Returns the filesCache implementation used to cache files.

Specified by:

getFilesCache in interface FileSystemManager

Returns:

The FilesCache.

getFileSystemConfigBuilder

public FileSystemConfigBuilder getFileSystemConfigBuilder(String scheme)
                                                   throws FileSystemException

Get the configuration builder for the given scheme.

Specified by:

getFileSystemConfigBuilder in interface FileSystemManager

Parameters:

scheme - The scheme to locate.

Returns:

The FileSystemConfigBuilder for the scheme.

Throws:

FileSystemException - if the given scheme is not konwn

getLogger

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

Returns the logger used by this manager.

Returns:

the Logger.

getOperationProviders

public FileOperationProvider[] getOperationProviders(String scheme)
                                              throws FileSystemException

Description copied from interface: FileSystemManager

Gets Providers for file operations.

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 - if an error occurs.

getProviderCapabilities

public Collection<Capability> getProviderCapabilities(String scheme)
                                               throws FileSystemException

Get the capabilities for a given scheme.

Specified by:

getProviderCapabilities in interface FileSystemManager

Parameters:

scheme - The scheme to located.

Returns:

A Collection of capabilities.

Throws:

FileSystemException - if the given scheme is not konwn

getReplicator

public FileReplicator getReplicator()
                             throws FileSystemException

Returns the file replicator.

Returns:

The file replicator. Never returns null.

Throws:

FileSystemException - if there is no FileReplicator.

getSchemes

public String[] getSchemes()

Get the schemes currently available.

Specified by:

getSchemes in interface FileSystemManager

Returns:

The array of scheme names.

getTemporaryFileStore

public TemporaryFileStore getTemporaryFileStore()
                                         throws FileSystemException

Returns the temporary file store.

Returns:

The file store. Never returns null.

Throws:

FileSystemException - if there is no TemporaryFileStore.

getURLStreamHandlerFactory

public URLStreamHandlerFactory getURLStreamHandlerFactory()

Get the URLStreamHandlerFactory.

Specified by:

getURLStreamHandlerFactory in interface FileSystemManager

Returns:

The URLStreamHandlerFactory.

hasProvider

public boolean hasProvider(String scheme)

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

Specified by:

hasProvider in interface FileSystemManager

Parameters:

scheme - The scheme to check.

Returns:

true if a provider is configured for this scheme, false otherwise.

init

public void init()
          throws FileSystemException

Initializes this manager.

If no value for the following properties was specified, it will use the following defaults:

• fileContentInfoFactory = new FileContentInfoFilenameFactory()
• filesCache = new SoftRefFilesCache()
• fileCacheStrategy = CacheStrategy.ON_RESOLVE

Throws:

FileSystemException - if an error occurs during initialization.

removeProvider

public void removeProvider(String urlScheme)

Unregisters a file system provider.

Parameters:

urlScheme - The scheme of the provider.

Since:

2.8.0

resolveFile

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

Resolves a URI, relative to base file.

Uses the local file provider to locate the system file.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

baseFile - The base File to use to locate the file.

uri - The URI of the file to locate.

Returns:

The FileObject for the located file.

Throws:

FileSystemException - if the file cannot be located or an error occurs.

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 FileOjbect to use to locate the file.

uri - The URI of the file to locate.

Returns:

The FileObject for the located file.

Throws:

FileSystemException - if the file cannot be located or an error occurs.

resolveFile

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

Resolves a URI, relative to a base file with specified FileSystem configuration.

Parameters:

baseFile - The base file.

uri - The file name. May be a fully qualified or relative path or a url.

fileSystemOptions - Options to pass to the file system.

Returns:

A FileObject representing the target file.

Throws:

FileSystemException - if an error occurs accessing the file.

resolveFile

public FileObject resolveFile(String uri)
                       throws FileSystemException

Locates a file by URI.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

uri - The URI of the file to locate.

Returns:

The FileObject for the located file.

Throws:

FileSystemException - if the file cannot be located or an error occurs.

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 URI of the file to locate.

fileSystemOptions - The options for the FileSystem.

Returns:

The FileObject for the located file.

Throws:

FileSystemException - if the file cannot be located or an error occurs.

resolveFile

public FileObject resolveFile(URI uri)
                       throws FileSystemException

Converts a URI into a FileObject.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

uri - The URI to convert.

Returns:

The FileObject that represents the URI. Never returns null.

Throws:

FileSystemException - On error converting the URI.

Since:

2.1

resolveFile

public FileObject resolveFile(URL url)
                       throws FileSystemException

Converts a URL into a FileObject.

Specified by:

resolveFile in interface FileSystemManager

Parameters:

url - The URL to convert.

Returns:

The FileObject that represents the URL. Never returns null.

Throws:

FileSystemException - On error converting the URL.

Since:

2.1

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 path to the file relative to the base FileName or an absolute path.

Returns:

The constructed FileName.

Throws:

FileSystemException - if an error occurs constructing the FileName.

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 file name

name - the name

scope - the NameScope

Returns:

The FileName of the file.

Throws:

FileSystemException - if an error occurs.

resolveURI

public FileName resolveURI(String uri)
                    throws FileSystemException

Resolve the uri to a file name.

Specified by:

resolveURI in interface FileSystemManager

Parameters:

uri - The URI to resolve.

Returns:

The FileName of the file.

Throws:

FileSystemException - if an error occurs.

setBaseFile

public void setBaseFile(File baseFile)
                 throws FileSystemException

Sets the base file to use when resolving relative URI.

Parameters:

baseFile - The new base FileObject.

Throws:

FileSystemException - if an error occurs.

setBaseFile

public void setBaseFile(FileObject baseFile)

Sets the base file to use when resolving relative URI.

Parameters:

baseFile - The new base FileObject.

setCacheStrategy

public void setCacheStrategy(CacheStrategy fileCacheStrategy)
                      throws FileSystemException

Set the cache strategy to use when dealing with file object data.

Can only be set before the FileSystemManager is initialized.

The default is CacheStrategy.ON_RESOLVE.

Parameters:

fileCacheStrategy - The CacheStrategy to use.

Throws:

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

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.

Parameters:

provider - The FileProvider.

Throws:

FileSystemException - if an error occurs setting the provider.

setFileContentInfoFactory

public void setFileContentInfoFactory(FileContentInfoFactory fileContentInfoFactory)
                               throws FileSystemException

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

Can only be set before the FileSystemManager is initialized.

Parameters:

fileContentInfoFactory - The FileContentInfoFactory.

Throws:

FileSystemException - if an error occurs setting the FileContentInfoFactory.

setFileObjectDecorator

public void setFileObjectDecorator(Class<?> fileObjectDecorator)
                            throws FileSystemException

Set a fileObject decorator to be used for ALL returned file objects.

Can only be set before the FileSystemManager is initialized.

Parameters:

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

Throws:

FileSystemException - if an error occurs setting the decorator.

setFilesCache

public void setFilesCache(FilesCache filesCache)
                   throws FileSystemException

Sets the filesCache implementation used to cache files.

Can only be set before the FileSystemManager is initialized.

The manager takes care of the lifecycle. If none is set, a default is picked in init().

Parameters:

filesCache - The FilesCache.

Throws:

FileSystemException - if an error occurs setting the cache..

setLogger

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

Sets the logger to use.

This overwrites the default logger for this manager and is not reset in close().

Specified by:

setLogger in interface FileSystemManager

Parameters:

log - The Logger to use.

setReplicator

public void setReplicator(FileReplicator replicator)
                   throws FileSystemException

Sets the file replicator to use.

The manager takes care of all lifecycle management.

Parameters:

replicator - The FileReplicator.

Throws:

FileSystemException - if an error occurs setting the replicator.

setTemporaryFileStore

public void setTemporaryFileStore(TemporaryFileStore tempFileStore)
                           throws FileSystemException

Sets the temporary file store to use.

The manager takes care of all lifecycle management.

Parameters:

tempFileStore - The temporary FileStore.

Throws:

FileSystemException - if an error occurs adding the file store.

toFileObject

public FileObject toFileObject(File file)
                        throws FileSystemException

Converts a local file into a FileObject.

Specified by:

toFileObject in interface FileSystemManager

Parameters:

file - The input File.

Returns:

the create FileObject

Throws:

FileSystemException - if an error occurs creating the file.