org.apache.commons.vfs2.provider.gzip
Class GzipFileObject

java.lang.Object
  org.apache.commons.vfs2.provider.AbstractFileObject
      org.apache.commons.vfs2.provider.compressed.CompressedFileFileObject
          org.apache.commons.vfs2.provider.gzip.GzipFileObject

All Implemented Interfaces:

FileObject

public class GzipFileObject
extends CompressedFileFileObject

the gzip file.

Author:

Commons VFS team

Constructor Summary

protected

GzipFileObject(AbstractFileName name, FileObject container, CompressedFileFileSystem fs)

Method Summary

protected InputStream	doGetInputStream() Creates an input stream to read the file content from.
protected OutputStream	doGetOutputStream(boolean bAppend) Creates an output stream to write the file content to.

Methods inherited from class org.apache.commons.vfs2.provider.compressed.CompressedFileFileObject

createFile, doGetContentSize, doGetLastModifiedTime, doGetType, doListChildren, getContainer, isWriteable

Methods inherited from class org.apache.commons.vfs2.provider.AbstractFileObject

canRenameTo, childrenChanged, close, copyFrom, createFolder, delete, delete, doAttach, doCreateFileContent, doCreateFolder, doDelete, doDetach, doGetAttributes, doGetCertificates, doGetRandomAccessContent, doIsHidden, doIsReadable, doIsSameFile, doIsWriteable, doListChildrenResolved, doRemoveAttribute, doRename, doSetAttribute, doSetLastModifiedTime, 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, moveTo, notifyAllStreamsClosed, onChange, onChildrenChanged, refresh, resolveFile, resolveFile, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.commons.vfs2.FileObject

canRenameTo, close, copyFrom, createFolder, delete, delete, exists, findFiles, findFiles, getChild, getChildren, getContent, getFileOperations, getFileSystem, getName, getParent, getType, getURL, isAttached, isContentOpen, isHidden, isReadable, moveTo, refresh, resolveFile, resolveFile

Constructor Detail

GzipFileObject

protected GzipFileObject(AbstractFileName name,
                         FileObject container,
                         CompressedFileFileSystem fs)

Method Detail

doGetInputStream

protected InputStream doGetInputStream()
                                throws Exception

Description copied from class: AbstractFileObject

Creates an input stream to read the file content from. 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.

The returned stream does not have to be buffered.

Specified by:

doGetInputStream in class AbstractFileObject

Returns:

An InputStream to read the file content.

Throws:

Exception - if an error occurs.

doGetOutputStream

protected OutputStream doGetOutputStream(boolean bAppend)
                                  throws Exception

Description copied from class: AbstractFileObject

Creates an output stream to write the file content to. Is only called if:

• AbstractFileObject.doIsWriteable() returns true.
• AbstractFileObject.doGetType() returns FileType.FILE, or AbstractFileObject.doGetType() returns FileType.IMAGINARY, and the file's parent exists and is a folder.

It is guaranteed that there are no open stream (input or output) for this file when this method is called.

The returned stream does not have to be buffered.

This implementation throws an exception.

Overrides:

doGetOutputStream in class AbstractFileObject

Parameters:

bAppend - true if the file should be appended to, false if it should be overwritten.

Returns:

An OutputStream to write to the file.

Throws:

Exception - if an error occurs.