org.jboss.virtual.plugins.context.memory
Class MemoryContextHandler

java.lang.Object
  org.jboss.virtual.plugins.context.AbstractVirtualFileHandler
      org.jboss.virtual.plugins.context.AbstractURLHandler
          org.jboss.virtual.plugins.context.memory.MemoryContextHandler

All Implemented Interfaces:

Serializable, StructuredVirtualFileHandler, VirtualFileHandler

public class MemoryContextHandler
extends AbstractURLHandler
implements StructuredVirtualFileHandler

Virtual memory context handler.

Version:

$Revision: 1.1 $

Author:

Kabir Khan

See Also:

Serialized Form

Field Summary

Fields inherited from class org.jboss.virtual.plugins.context.AbstractVirtualFileHandler

cachedLastModified, log

Constructor Summary

MemoryContextHandler(VFSContext context, VirtualFileHandler parent, URL url, String name)

Method Summary

protected void	addChild(String name, MemoryContextHandler child)
VirtualFileHandler	createChildHandler(String name) Called by structuredFindChild
boolean	exists() Basis existence on URLConnection.getLastModified() !
VirtualFileHandler	getChild(String path) Get a child
List<VirtualFileHandler>	getChildren(boolean ignoreErrors) Get the children
long	getLastModified() When the file was last modified
long	getSize() Get the size
protected void	initCacheLastModified()
boolean	isLeaf() Whether it is a simple leaf of the VFS, i.e. whether it can contain other files
InputStream	openStream() Access the file contents.
void	setContents(byte[] contents)
URL	toVfsUrl() Get a VFS-based URL

Methods inherited from class org.jboss.virtual.plugins.context.AbstractURLHandler

getURL, isHidden, toURI, toURL

Methods inherited from class org.jboss.virtual.plugins.context.AbstractVirtualFileHandler

checkClosed, checkParentExists, close, decrement, doClose, equals, getChildPathName, getChildVfsUrl, getName, getParent, getPathName, getVFSContext, getVfsUrl, getVirtualFile, hasBeenModified, hashCode, increment, setPathName, setVfsUrl, simpleFindChild, structuredFindChild, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MemoryContextHandler

public MemoryContextHandler(VFSContext context,
                            VirtualFileHandler parent,
                            URL url,
                            String name)

Method Detail

addChild

protected void addChild(String name,
                        MemoryContextHandler child)

getChildren

public List<VirtualFileHandler> getChildren(boolean ignoreErrors)
                                     throws IOException

Description copied from interface: VirtualFileHandler

Get the children

Specified by:

getChildren in interface VirtualFileHandler

Parameters:

ignoreErrors - whether to ignore errors

Returns:

the children

Throws:

IOException - for an error accessing the file system

isLeaf

public boolean isLeaf()

Description copied from interface: VirtualFileHandler

Whether it is a simple leaf of the VFS, i.e. whether it can contain other files

Specified by:

isLeaf in interface VirtualFileHandler

Returns:

true if a simple file.

createChildHandler

public VirtualFileHandler createChildHandler(String name)
                                      throws IOException

Called by structuredFindChild

Specified by:

createChildHandler in interface StructuredVirtualFileHandler

Parameters:

name - the name

Returns:

the handler

Throws:

IOException - for any error accessing the virtual file system

getChild

public VirtualFileHandler getChild(String path)
                            throws IOException

Description copied from interface: VirtualFileHandler

Get a child

Specified by:

getChild in interface VirtualFileHandler

Parameters:

path - the path

Returns:

the child or null if not found

Throws:

IOException - for an error accessing the file system

exists

public boolean exists()
               throws IOException

Description copied from class: AbstractURLHandler

Basis existence on URLConnection.getLastModified() != 0. This may not be true for all url connections.

Specified by:

exists in interface VirtualFileHandler

Overrides:

exists in class AbstractURLHandler

Returns:

true if the file exists, false otherwise.

Throws:

IOException - - thrown on failure to detect existence.

See Also:

URLConnection.getLastModified(), org.jboss.test.virtual.test.URLExistsUnitTestCase

setContents

public void setContents(byte[] contents)

initCacheLastModified

protected void initCacheLastModified()

Overrides:

initCacheLastModified in class AbstractURLHandler

getSize

public long getSize()
             throws IOException

Description copied from interface: VirtualFileHandler

Get the size

Specified by:

getSize in interface VirtualFileHandler

Overrides:

getSize in class AbstractURLHandler

Returns:

the size

Throws:

IOException - for any problem accessing the virtual file system

getLastModified

public long getLastModified()
                     throws IOException

Description copied from interface: VirtualFileHandler

When the file was last modified

Specified by:

getLastModified in interface VirtualFileHandler

Overrides:

getLastModified in class AbstractURLHandler

Returns:

the last modified time

Throws:

IOException - for any problem accessing the virtual file system

openStream

public InputStream openStream()
                       throws IOException

Description copied from interface: VirtualFileHandler

Access the file contents.

Specified by:

openStream in interface VirtualFileHandler

Overrides:

openStream in class AbstractURLHandler

Returns:

An InputStream for the file contents.

Throws:

IOException - for any problem accessing the virtual file system

toVfsUrl

public URL toVfsUrl()
             throws MalformedURLException,
                    URISyntaxException

Description copied from interface: VirtualFileHandler

Get a VFS-based URL

Specified by:

toVfsUrl in interface VirtualFileHandler

Overrides:

toVfsUrl in class AbstractVirtualFileHandler

Returns:

the url

Throws:

MalformedURLException - for any error

URISyntaxException - for an error parsing the URI