Package org.apache.commons.vfs.provider
Class DelegateFileObject
java.lang.Object
org.apache.commons.vfs.provider.AbstractFileObject
org.apache.commons.vfs.provider.DelegateFileObject
- All Implemented Interfaces:
FileListener
,FileObject
A file backed by another file.
- Version:
- $Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Wed, 29 Nov 2006) $
- Author:
- Adam Murdoch, Gary D. Gregory
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Constructor Summary
ConstructorsConstructorDescriptionDelegateFileObject
(FileName name, AbstractFileSystem fileSystem, FileObject file) -
Method Summary
Modifier and TypeMethodDescriptionvoid
attachChild
(FileName baseName, FileType type) Adds a child to this file.void
close()
Close the delegated fileprotected void
Creates this file as a folder.protected void
doDelete()
Deletes the file.protected Map
Returns the attributes of this file.protected Certificate[]
Returns the certificates of this file.protected long
Returns the size of the file content (in bytes).protected InputStream
Creates an input stream to read the file content from.protected long
Returns the last-modified time of this file.protected OutputStream
doGetOutputStream
(boolean bAppend) Creates an output stream to write the file content to.protected FileType
Determines the type of the file, returns null if the file does not exist.protected boolean
Determines if this file is hidden.protected boolean
Determines if this file can be read.protected boolean
Determines if this file can be written to.protected String[]
Lists the children of the file.protected void
doSetAttribute
(String atttrName, Object value) Sets an attribute of this file.protected void
doSetLastModifiedTime
(long modtime) Sets the last-modified time of this file.void
fileChanged
(FileChangeEvent event) Called when a file is changed.void
fileCreated
(FileChangeEvent event) Called when a file is created.void
fileDeleted
(FileChangeEvent event) Called when a file is deleted.void
setFile
(FileObject file) Attaches or detaches the target file.Methods inherited from class org.apache.commons.vfs.provider.AbstractFileObject
canRenameTo, childrenChanged, childrenChanged, copyFrom, createFile, createFolder, delete, delete, doAttach, doDetach, doGetRandomAccessContent, doIsSameFile, doListChildrenResolved, doRename, endOutput, exists, finalize, findFiles, findFiles, getChild, getChildren, getContent, getFileContentInfoFactory, getFileOperations, getFileSystem, getInputStream, getName, getOutputStream, getOutputStream, getParent, getRandomAccessContent, getType, getURL, handleChanged, handleCreate, handleDelete, holdObject, injectType, isAttached, isContentOpen, isHidden, isReadable, isSameFile, isWriteable, moveTo, notifyAllStreamsClosed, onChange, onChildrenChanged, refresh, resolveFile, resolveFile, toString
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Constructor Details
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DelegateFileObject
public DelegateFileObject(FileName name, AbstractFileSystem fileSystem, FileObject file) throws FileSystemException - Throws:
FileSystemException
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Method Details
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attachChild
Adds a child to this file.- Throws:
Exception
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setFile
Attaches or detaches the target file.- Throws:
Exception
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doGetType
Determines the type of the file, returns null if the file does not exist.- Specified by:
doGetType
in classAbstractFileObject
- Throws:
FileSystemException
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doIsReadable
Determines if this file can be read.- Overrides:
doIsReadable
in classAbstractFileObject
- Throws:
FileSystemException
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doIsWriteable
Determines if this file can be written to.- Overrides:
doIsWriteable
in classAbstractFileObject
- Throws:
FileSystemException
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doIsHidden
Determines if this file is hidden.- Overrides:
doIsHidden
in classAbstractFileObject
- Throws:
FileSystemException
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doListChildren
Lists the children of the file.- Specified by:
doListChildren
in classAbstractFileObject
- Throws:
Exception
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doCreateFolder
Creates this file as a folder.- Overrides:
doCreateFolder
in classAbstractFileObject
- Throws:
Exception
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doDelete
Deletes the file.- Overrides:
doDelete
in classAbstractFileObject
- Throws:
Exception
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doGetContentSize
Returns the size of the file content (in bytes). Is only called ifdoGetType()
returnsFileType.FILE
.- Specified by:
doGetContentSize
in classAbstractFileObject
- Throws:
Exception
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doGetAttributes
Returns the attributes of this file.- Overrides:
doGetAttributes
in classAbstractFileObject
- Throws:
Exception
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doSetAttribute
Sets an attribute of this file.- Overrides:
doSetAttribute
in classAbstractFileObject
- Throws:
Exception
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doGetCertificates
Returns the certificates of this file.- Overrides:
doGetCertificates
in classAbstractFileObject
- Throws:
Exception
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doGetLastModifiedTime
Returns the last-modified time of this file.- Overrides:
doGetLastModifiedTime
in classAbstractFileObject
- Throws:
Exception
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doSetLastModifiedTime
Sets the last-modified time of this file.- Overrides:
doSetLastModifiedTime
in classAbstractFileObject
- Throws:
Exception
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doGetInputStream
Creates an input stream to read the file content from.- Specified by:
doGetInputStream
in classAbstractFileObject
- Throws:
Exception
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doGetOutputStream
Creates an output stream to write the file content to.- Overrides:
doGetOutputStream
in classAbstractFileObject
- Throws:
Exception
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fileCreated
Called when a file is created.- Specified by:
fileCreated
in interfaceFileListener
- Throws:
Exception
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fileDeleted
Called when a file is deleted.- Specified by:
fileDeleted
in interfaceFileListener
- Throws:
Exception
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fileChanged
Called when a file is changed. This will only happen if you monitor the file usingFileMonitor
.- Specified by:
fileChanged
in interfaceFileListener
- Throws:
Exception
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close
Close the delegated file- Specified by:
close
in interfaceFileObject
- Overrides:
close
in classAbstractFileObject
- Throws:
FileSystemException
- On error closing the file.- See Also:
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