Class GZipFileManager

java.lang.Object

com.ibm.dtfj.utils.file.FileManager

com.ibm.dtfj.utils.file.SimpleFileManager

com.ibm.dtfj.utils.file.CompressedFileManager

com.ibm.dtfj.utils.file.GZipFileManager

public class GZipFileManager
extends CompressedFileManager

File manger for gzip'd files. The gzip algorithm does not support a hierarchical archive and only works on a single file.

Field Summary

Fields declared in class CompressedFileManager

buffer

Modifier and Type	Field	Description
protected final byte[]	buffer

Fields declared in class SimpleFileManager

managedFile

Modifier and Type	Field	Description
protected final File	managedFile

Fields declared in class FileManager

logger, MIN_CORE_SIZE

Modifier and Type	Field	Description
protected static final Logger	logger
static final long	MIN_CORE_SIZE

Constructor Summary

Constructors

Constructor	Description
GZipFileManager(File file)

Method Summary

Modifier and Type	Method	Description
void	extract(ManagedImageSource file, File todir)
void	extract(File todir)
ImageInputStream	getStream(ManagedImageSource source)

Methods declared in class CompressedFileManager

checkDirectoryToExtractTo, extractEntry, getImageSource

Modifier and Type	Method	Description
protected void	checkDirectoryToExtractTo(File todir)	Will check that the directory to extract to is a directory if it exists or create it otherwise.
protected void	extractEntry(InputStream in, File path)
ManagedImageSource	getImageSource(String path)	Returns a specified image source specified by the path in the zip file

Methods declared in class SimpleFileManager

getImageSources, getStream

Modifier and Type	Method	Description
List<ManagedImageSource>	getImageSources()
ImageInputStream	getStream()	Gets a stream for the file which is being managed, this could be an archive file or a normal file.

Methods declared in class FileManager

createTempDir, fileExists, genJavacoreName, getJavaCoreNameFromPHD, getManager, isArchive

Modifier and Type	Method	Description
static File	createTempDir(File parent)	Creates a unique temporary directory under the specified parent
static boolean	fileExists(File file)	A platform aware file existence checker that allows for MVS datasets on z/OS
protected String	genJavacoreName(String[] s, int inc, int componentToInc)
protected String[]	getJavaCoreNameFromPHD(String name)	Generate a list of possible javacore names from a given phd name.
static FileManager	getManager(File file)	Factory method for getting the correct manager to deal with the supplied file
static boolean	isArchive(File file)

Methods declared in class Object

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

Constructor Details

GZipFileManager

public GZipFileManager(File file)

Method Details

extract

public void extract(ManagedImageSource file,
 File todir)
             throws IOException

Throws:

IOException

getStream

public ImageInputStream getStream(ManagedImageSource source)
                           throws IOException

Throws:

IOException

extract

public void extract(File todir)
             throws IOException

Throws:

IOException