org.apache.commons.vfs.provider.zip

Class ZipFileObject

java.lang.Object

org.apache.commons.vfs.provider.AbstractFileObject

org.apache.commons.vfs.provider.zip.ZipFileObject

All Implemented Interfaces:

FileObject

Direct Known Subclasses:

JarFileObject

public class ZipFileObject
extends AbstractFileObject
implements FileObject

A file in a Zip file system.

Version:

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

Author:

Adam Murdoch

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.zip.ZipEntry	entry

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ZipFileObject(FileName name, java.util.zip.ZipEntry entry, ZipFileSystem fs, boolean zipExists)

Method Summary

Methods

Modifier and Type	Method and Description
void	attachChild(FileName childName) Attaches a child
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 FileType	doGetType() Returns the file's type.
protected java.lang.String[]	doListChildren() Lists the children of the file.
boolean	isWriteable() Determines if this file can be written to.
protected void	setZipEntry(java.util.zip.ZipEntry entry) Sets the details for this file object.

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

canRenameTo, childrenChanged, childrenChanged, close, copyFrom, createFile, createFolder, delete, delete, doAttach, doCreateFolder, doDelete, doDetach, doGetAttributes, doGetCertificates, doGetOutputStream, doGetRandomAccessContent, doIsHidden, doIsReadable, doIsSameFile, doIsWriteable, doListChildrenResolved, 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.vfs.FileObject

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

Field Detail

entry

protected java.util.zip.ZipEntry entry

Constructor Detail

ZipFileObject

protected ZipFileObject(FileName name,
             java.util.zip.ZipEntry entry,
             ZipFileSystem fs,
             boolean zipExists)
                 throws FileSystemException

Throws:

FileSystemException

Method Detail

setZipEntry

protected void setZipEntry(java.util.zip.ZipEntry entry)

Sets the details for this file object.

attachChild

public void attachChild(FileName childName)

Attaches a child

isWriteable

public boolean isWriteable()
                    throws FileSystemException

Determines if this file can be written to.

Specified by:

isWriteable in interface FileObject

Overrides:

isWriteable in class AbstractFileObject

Returns:

true if this file is writeable, false if not.

Throws:

FileSystemException - On error determining if this file exists.

doGetType

protected FileType doGetType()

Returns the file's type.

Specified by:

doGetType in class AbstractFileObject

doListChildren

protected java.lang.String[] doListChildren()

Lists the children of the file.

Specified by:

doListChildren in class AbstractFileObject

doGetContentSize

protected long doGetContentSize()

Returns the size of the file content (in bytes). Is only called if doGetType() returns FileType.FILE.

Specified by:

doGetContentSize in class AbstractFileObject

doGetLastModifiedTime

protected long doGetLastModifiedTime()
                              throws java.lang.Exception

Returns the last modified time of this file.

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. The input stream returned by this method is guaranteed to be closed before this method is called again.

Specified by:

doGetInputStream in class AbstractFileObject

Throws:

java.lang.Exception