Module openj9.dtfj

Package com.ibm.dtfj.utils.file

Class FileManager

java.lang.Object

com.ibm.dtfj.utils.file.FileManager

Direct Known Subclasses:

SimpleFileManager

public abstract class FileManager
extends Object

Class which manages the files on the local system.

Field Summary

Fields

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

Constructor Summary

Constructors

Constructor	Description
FileManager()

Method Summary

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)
abstract List<ManagedImageSource>	getImageSources()
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
abstract ImageInputStream	getStream()	Gets a stream for the file which is being managed, this could be an archive file or a normal file.
static boolean	isArchive(File file)

Methods declared in class java.lang.Object

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

Field Details

MIN_CORE_SIZE

public static final long MIN_CORE_SIZE

See Also:

• Constant Field Values

logger

protected static final Logger logger

Constructor Details

FileManager

public FileManager()

Method Details

getImageSources

public abstract List<ManagedImageSource> getImageSources()
                                                  throws IOException

Throws:

IOException

getStream

public abstract ImageInputStream getStream()
                                    throws IOException

Gets a stream for the file which is being managed, this could be an archive file or a normal file. If this is a compressed file then the stream returned will be a 'raw' stream onto file itself.

Returns:

Throws:

IOException

createTempDir

public static File createTempDir(File parent)
                          throws IOException

Creates a unique temporary directory under the specified parent

Parameters:

parent -

Returns:

Throws:

IOException

fileExists

public static boolean fileExists(File file)

A platform aware file existence checker that allows for MVS datasets on z/OS

Parameters:

file - the file to check

Returns:

true if the file exists, or the check cannot be performed in which case the default response of true is returned

getManager

public static FileManager getManager(File file)

Factory method for getting the correct manager to deal with the supplied file

Parameters:

file -

Returns:

isArchive

public static boolean isArchive(File file)

getJavaCoreNameFromPHD

protected String[] getJavaCoreNameFromPHD(String name)

Generate a list of possible javacore names from a given phd name.

Parameters:

name - the heap dump

Returns:

candidate javacore names

genJavacoreName

protected String genJavacoreName(String[] s,
 int inc,
 int componentToInc)