org.eclipse.osgi.baseadaptor.bundlefile
Class BundleFileWrapperChain

java.lang.Object
  org.eclipse.osgi.baseadaptor.bundlefile.BundleFile
      org.eclipse.osgi.baseadaptor.bundlefile.BundleFileWrapperChain

public class BundleFileWrapperChain
extends BundleFile

Used to chain the BundleFile objects returned from BundleFileWrapperFactoryHook. This class is useful for traversing the chain of wrapped bundle files.

Field Summary

Fields inherited from class org.eclipse.osgi.baseadaptor.bundlefile.BundleFile

basefile, PROP_SETPERMS_CMD

Constructor Summary

BundleFileWrapperChain(BundleFile wrapped, BundleFileWrapperChain next)

Method Summary

void	close() Closes the BundleFile.
boolean	containsDir(java.lang.String dir) Determines if any BundleEntries exist in the given directory path.
java.io.File	getBaseFile() Returns the base file for this BundleFile
BundleEntry	getEntry(java.lang.String path) Locates a file name in this bundle and returns a BundleEntry object
java.util.Enumeration	getEntryPaths(java.lang.String path) Allows to access the entries of the bundle.
java.io.File	getFile(java.lang.String path, boolean nativeCode) Returns a File for the bundle entry specified by the path.
BundleFileWrapperChain	getNext() The next WrapperBundleFile in the chain.
java.net.URL	getResourceURL(java.lang.String path, BaseData hostData, int index) Returns a URL to access the contents of the entry specified by the path
BundleFile	getWrapped() The BundleFile that is wrapped
void	open() Opens the BundleFiles.
java.lang.String	toString()

Methods inherited from class org.eclipse.osgi.baseadaptor.bundlefile.BundleFile

fixTrailingSlash, getResourceURL, getResourceURL, setPermissions

Methods inherited from class java.lang.Object

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

Constructor Detail

BundleFileWrapperChain

public BundleFileWrapperChain(BundleFile wrapped,
                              BundleFileWrapperChain next)

Method Detail

close

public void close()
           throws java.io.IOException

Description copied from class: BundleFile

Closes the BundleFile.

Specified by:

close in class BundleFile

Throws:

java.io.IOException - if any error occurs.

containsDir

public boolean containsDir(java.lang.String dir)

Description copied from class: BundleFile

Determines if any BundleEntries exist in the given directory path.

Specified by:

containsDir in class BundleFile

Parameters:

dir - The directory path to check existence of.

Returns:

true if the BundleFile contains entries under the given directory path; false otherwise.

getEntry

public BundleEntry getEntry(java.lang.String path)

Description copied from class: BundleFile

Locates a file name in this bundle and returns a BundleEntry object

Specified by:

getEntry in class BundleFile

Parameters:

path - path of the entry to locate in the bundle

Returns:

BundleEntry object or null if the file name does not exist in the bundle

getEntryPaths

public java.util.Enumeration getEntryPaths(java.lang.String path)

Description copied from class: BundleFile

Allows to access the entries of the bundle. Since the bundle content is usually a jar, this allows to access the jar contents. GetEntryPaths allows to enumerate the content of "path". If path is a directory, it is equivalent to listing the directory contents. The returned names are either files or directories themselves. If a returned name is a directory, it finishes with a slash. If a returned name is a file, it does not finish with a slash.

Specified by:

getEntryPaths in class BundleFile

Parameters:

path - path of the entry to locate in the bundle

Returns:

an Enumeration of Strings that indicate the paths found or null if the path does not exist.

getFile

public java.io.File getFile(java.lang.String path,
                            boolean nativeCode)

Description copied from class: BundleFile

Returns a File for the bundle entry specified by the path. If required the content of the bundle entry is extracted into a file on the file system.

Specified by:

getFile in class BundleFile

Parameters:

path - The path to the entry to locate a File for.

nativeCode - true if the path is native code.

Returns:

A File object to access the contents of the bundle entry.

open

public void open()
          throws java.io.IOException

Description copied from class: BundleFile

Opens the BundleFiles.

Specified by:

open in class BundleFile

Throws:

java.io.IOException - if any error occurs.

getBaseFile

public java.io.File getBaseFile()

Description copied from class: BundleFile

Returns the base file for this BundleFile

Overrides:

getBaseFile in class BundleFile

Returns:

the base file for this BundleFile

getResourceURL

public java.net.URL getResourceURL(java.lang.String path,
                                   BaseData hostData,
                                   int index)

Description copied from class: BundleFile

Returns a URL to access the contents of the entry specified by the path

Overrides:

getResourceURL in class BundleFile

Parameters:

path - the path to the resource

hostData - the host BaseData

index - the resource index

Returns:

a URL to access the contents of the entry specified by the path

toString

public java.lang.String toString()

Overrides:

toString in class BundleFile

getWrapped

public BundleFile getWrapped()

The BundleFile that is wrapped

Returns:

the BunldeFile that is wrapped

getNext

public BundleFileWrapperChain getNext()

The next WrapperBundleFile in the chain. A null value is returned if this is the end of the chain.

Returns:

the next WrapperBundleFile