org.apache.commons.vfs2.provider
Class DefaultFileContent

java.lang.Object
  org.apache.commons.vfs2.provider.DefaultFileContent

All Implemented Interfaces:

FileContent

public final class DefaultFileContent
extends Object
implements FileContent

The content of a file.

Author:

Commons VFS team

Constructor Summary

DefaultFileContent(AbstractFileObject file, FileContentInfoFactory fileContentInfoFactory)

Method Summary

void	close() Closes all resources used by the content, including all streams, readers and writers.
Object	getAttribute(String attrName) Gets the value of an attribute.
String[]	getAttributeNames() Lists the attributes of this file.
Map<String,Object>	getAttributes() Returns a read-only map of this file's attributes.
Certificate[]	getCertificates() Returns the certificates used to sign this file.
FileContentInfo	getContentInfo() get the content info.
FileObject	getFile() Returns the file that this is the content of.
InputStream	getInputStream() Returns an input stream for reading the content.
long	getLastModifiedTime() Returns the last-modified timestamp.
OutputStream	getOutputStream() Returns an output stream for writing the content.
OutputStream	getOutputStream(boolean bAppend) Returns an output stream for writing the content in append mode.
RandomAccessContent	getRandomAccessContent(RandomAccessMode mode) Returns an input/output stream to use to read and write the content of the file in an random manner.
long	getSize() Returns the size of the content (in bytes).
boolean	hasAttribute(String attrName) Checks if an attribute exists.
boolean	isOpen() check if a input and/or output stream is open. This checks only the scope of the current thread.
boolean	isOpenGlobal() check if a input and/or output stream is open. This checks all threads.
void	removeAttribute(String attrName) Removes an attribute.
void	resetAttributes() Used internally to flag situations where the file attributes should be reretrieved.
void	setAttribute(String attrName, Object value) Sets the value of an attribute.
void	setLastModifiedTime(long modTime) Sets the last-modified timestamp.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultFileContent

public DefaultFileContent(AbstractFileObject file,
                          FileContentInfoFactory fileContentInfoFactory)

Method Detail

getFile

public FileObject getFile()

Returns the file that this is the content of.

Specified by:

getFile in interface FileContent

Returns:

the FileObject.

getSize

public long getSize()
             throws FileSystemException

Returns the size of the content (in bytes).

Specified by:

getSize in interface FileContent

Returns:

The size of the content (in bytes).

Throws:

FileSystemException - if an error occurs.

getLastModifiedTime

public long getLastModifiedTime()
                         throws FileSystemException

Returns the last-modified timestamp.

Specified by:

getLastModifiedTime in interface FileContent

Returns:

The last modified timestamp.

Throws:

FileSystemException - if an error occurs.

setLastModifiedTime

public void setLastModifiedTime(long modTime)
                         throws FileSystemException

Sets the last-modified timestamp.

Specified by:

setLastModifiedTime in interface FileContent

Parameters:

modTime - The last modified timestamp.

Throws:

FileSystemException - if an error occurs.

hasAttribute

public boolean hasAttribute(String attrName)
                     throws FileSystemException

Checks if an attribute exists.

Specified by:

hasAttribute in interface FileContent

Parameters:

attrName - The name of the attribute to check.

Returns:

true if the attribute is associated with the file.

Throws:

FileSystemException - if an error occurs.

Since:

2.0

getAttributes

public Map<String,Object> getAttributes()
                                 throws FileSystemException

Returns a read-only map of this file's attributes.

Specified by:

getAttributes in interface FileContent

Returns:

a Map of the file's attributes.

Throws:

FileSystemException - if an error occurs.

resetAttributes

public void resetAttributes()

Used internally to flag situations where the file attributes should be reretrieved.

Since:

2.0

getAttributeNames

public String[] getAttributeNames()
                           throws FileSystemException

Lists the attributes of this file.

Specified by:

getAttributeNames in interface FileContent

Returns:

An array of attribute names.

Throws:

FileSystemException - if an error occurs.

getAttribute

public Object getAttribute(String attrName)
                    throws FileSystemException

Gets the value of an attribute.

Specified by:

getAttribute in interface FileContent

Parameters:

attrName - The attribute name.

Returns:

The value of the attribute or null.

Throws:

FileSystemException - if an error occurs.

setAttribute

public void setAttribute(String attrName,
                         Object value)
                  throws FileSystemException

Sets the value of an attribute.

Specified by:

setAttribute in interface FileContent

Parameters:

attrName - The name of the attribute to add.

value - The value of the attribute.

Throws:

FileSystemException - if an error occurs.

removeAttribute

public void removeAttribute(String attrName)
                     throws FileSystemException

Removes an attribute.

Specified by:

removeAttribute in interface FileContent

Parameters:

attrName - The name of the attribute to remove.

Throws:

FileSystemException - if an error occurs.

Since:

2.0

getCertificates

public Certificate[] getCertificates()
                              throws FileSystemException

Returns the certificates used to sign this file.

Specified by:

getCertificates in interface FileContent

Returns:

An array of Certificates.

Throws:

FileSystemException - if an error occurs.

getInputStream

public InputStream getInputStream()
                           throws FileSystemException

Returns an input stream for reading the content.

Specified by:

getInputStream in interface FileContent

Returns:

The InputStream

Throws:

FileSystemException - if an error occurs.

getRandomAccessContent

public RandomAccessContent getRandomAccessContent(RandomAccessMode mode)
                                           throws FileSystemException

Returns an input/output stream to use to read and write the content of the file in an random manner.

Specified by:

getRandomAccessContent in interface FileContent

Parameters:

mode - The RandomAccessMode.

Returns:

A RandomAccessContent object to access the file.

Throws:

FileSystemException - if an error occurs.

getOutputStream

public OutputStream getOutputStream()
                             throws FileSystemException

Returns an output stream for writing the content.

Specified by:

getOutputStream in interface FileContent

Returns:

The OutputStream for the file.

Throws:

FileSystemException - if an error occurs.

getOutputStream

public OutputStream getOutputStream(boolean bAppend)
                             throws FileSystemException

Returns an output stream for writing the content in append mode.

Specified by:

getOutputStream in interface FileContent

Parameters:

bAppend - true if the data written should be appended.

Returns:

The OutputStream for the file.

Throws:

FileSystemException - if an error occurs.

close

public void close()
           throws FileSystemException

Closes all resources used by the content, including all streams, readers and writers.

Specified by:

close in interface FileContent

Throws:

FileSystemException - if an error occurs.

isOpen

public boolean isOpen()

check if a input and/or output stream is open.
This checks only the scope of the current thread.

Specified by:

isOpen in interface FileContent

Returns:

true if this is the case

isOpenGlobal

public boolean isOpenGlobal()

check if a input and/or output stream is open.
This checks all threads.

Returns:

true if this is the case

getContentInfo

public FileContentInfo getContentInfo()
                               throws FileSystemException

get the content info. e.g. content-type, content-encoding

Specified by:

getContentInfo in interface FileContent

Returns:

The FileContentInfo.

Throws:

FileSystemException - if an error occurs.