org.apache.commons.vfs.provider.http

Class HttpFileObject

java.lang.Object

org.apache.commons.vfs.provider.AbstractFileObject

org.apache.commons.vfs.provider.http.HttpFileObject

All Implemented Interfaces:

FileObject

public class HttpFileObject
extends AbstractFileObject

A file object backed by commons httpclient.

Version:

$Revision: 480428 $ $Date: 2006-11-29 07:15:24 +0100 (Wed, 29 Nov 2006) $

Author:

Adam Murdoch

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	HttpFileObject(FileName name, HttpFileSystem fileSystem)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	doDetach() Detaches this file object from its file resource.
protected long	doGetContentSize() Returns the size of the file content (in bytes).
protected java.io.InputStream	doGetInputStream() Creates an input stream to read the file content from.
protected long	doGetLastModifiedTime() Returns the last modified time of this file.
protected RandomAccessContent	doGetRandomAccessContent(RandomAccessMode mode) Creates access to the file for random i/o.
protected FileType	doGetType() Determines the type of this file.
protected java.lang.String[]	doListChildren() Lists the children of this file.
protected java.lang.String	encodePath(java.lang.String decodedPath)
protected FileContentInfoFactory	getFileContentInfoFactory() create the filecontentinfo implementation

Methods inherited from class org.apache.commons.vfs.provider.AbstractFileObject

canRenameTo, childrenChanged, childrenChanged, close, copyFrom, createFile, createFolder, delete, delete, doAttach, doCreateFolder, doDelete, doGetAttributes, doGetCertificates, doGetOutputStream, doIsHidden, doIsReadable, doIsSameFile, doIsWriteable, doListChildrenResolved, doRename, doSetAttribute, doSetLastModifiedTime, endOutput, exists, finalize, findFiles, findFiles, getChild, getChildren, getContent, 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

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpFileObject

protected HttpFileObject(FileName name,
              HttpFileSystem fileSystem)

Method Detail

doDetach

protected void doDetach()
                 throws java.lang.Exception

Detaches this file object from its file resource.

Overrides:

doDetach in class AbstractFileObject

Throws:

java.lang.Exception

doGetType

protected FileType doGetType()
                      throws java.lang.Exception

Determines the type of this file. Must not return null. The return value of this method is cached, so the implementation can be expensive.

Specified by:

doGetType in class AbstractFileObject

Throws:

java.lang.Exception

doListChildren

protected java.lang.String[] doListChildren()
                                     throws java.lang.Exception

Lists the children of this file.

Specified by:

doListChildren in class AbstractFileObject

Throws:

java.lang.Exception

doGetContentSize

protected long doGetContentSize()
                         throws java.lang.Exception

Returns the size of the file content (in bytes).

Specified by:

doGetContentSize in class AbstractFileObject

Throws:

java.lang.Exception

doGetLastModifiedTime

protected long doGetLastModifiedTime()
                              throws java.lang.Exception

Returns the last modified time of this file.

This implementation throws an exception.

Overrides:

doGetLastModifiedTime in class AbstractFileObject

Throws:

java.lang.Exception

doGetInputStream

protected java.io.InputStream doGetInputStream()
                                        throws java.lang.Exception

Creates an input stream to read the file content from. Is only called if doGetType() returns FileType.FILE.

It is guaranteed that there are no open output streams for this file when this method is called.

The returned stream does not have to be buffered.

Specified by:

doGetInputStream in class AbstractFileObject

Throws:

java.lang.Exception

doGetRandomAccessContent

protected RandomAccessContent doGetRandomAccessContent(RandomAccessMode mode)
                                                throws java.lang.Exception

Description copied from class: AbstractFileObject

Creates access to the file for random i/o. Is only called if AbstractFileObject.doGetType() returns FileType.FILE.

It is guaranteed that there are no open output streams for this file when this method is called.

Overrides:

doGetRandomAccessContent in class AbstractFileObject

Throws:

java.lang.Exception

encodePath

protected java.lang.String encodePath(java.lang.String decodedPath)
                               throws org.apache.commons.httpclient.URIException

Throws:

org.apache.commons.httpclient.URIException

getFileContentInfoFactory

protected FileContentInfoFactory getFileContentInfoFactory()

Description copied from class: AbstractFileObject

create the filecontentinfo implementation

Overrides:

getFileContentInfoFactory in class AbstractFileObject