Class WeakZipFileFactory

java.lang.Object

org.apache.felix.framework.util.WeakZipFileFactory

public class WeakZipFileFactory
extends Object

This class implements a factory for creating weak zip files, which behave mostly like a ZipFile, but can be weakly closed to limit the number of open files.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	WeakZipFileFactory.WeakZipFile	This class wraps a ZipFile to making it possible to weakly close it; this means the underlying zip file will be automatically reopened on demand if anyone tries to use it.

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	CLOSED
private final Mutex	m_globalMutex
private final int	m_limit
private final List<WeakZipFileFactory.WeakZipFile>	m_openFiles
private static final SecureAction	m_secureAction
private final List<WeakZipFileFactory.WeakZipFile>	m_zipFiles
private static final int	OPEN
private static final int	WEAKLY_CLOSED

Constructor Summary

Constructors

Constructor	Description
WeakZipFileFactory(int limit)	Constructs a weak zip file factory with the specified file limit.

Method Summary

Modifier and Type	Method	Description
WeakZipFileFactory.WeakZipFile	create(File file)	Factory method used to create weak zip files.
(package private) List<WeakZipFileFactory.WeakZipFile>	getOpenZipZiles()	Only used for testing.
(package private) List<WeakZipFileFactory.WeakZipFile>	getZipZiles()	Only used for testing.

Methods inherited from class Object

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

Field Details

WEAKLY_CLOSED

private static final int WEAKLY_CLOSED

See Also:

• Constant Field Values

OPEN

private static final int OPEN

See Also:

• Constant Field Values

CLOSED

private static final int CLOSED

See Also:

• Constant Field Values

m_secureAction

private static final SecureAction m_secureAction

m_zipFiles

private final List<WeakZipFileFactory.WeakZipFile> m_zipFiles

m_openFiles

private final List<WeakZipFileFactory.WeakZipFile> m_openFiles

m_globalMutex

private final Mutex m_globalMutex

m_limit

private final int m_limit

Constructor Details

WeakZipFileFactory

public WeakZipFileFactory(int limit)

Constructs a weak zip file factory with the specified file limit. A limit of zero signifies no limit.

Parameters:

limit - maximum number of open zip files at any given time.

Method Details

create

public WeakZipFileFactory.WeakZipFile create(File file)
                                      throws IOException

Factory method used to create weak zip files.

Parameters:

file - the target zip file.

Returns:

the created weak zip file.

Throws:

IOException - if the zip file could not be opened.

getZipZiles

List<WeakZipFileFactory.WeakZipFile> getZipZiles()

Only used for testing.

Returns:

unclosed weak zip files.

getOpenZipZiles

List<WeakZipFileFactory.WeakZipFile> getOpenZipZiles()

Only used for testing.

Returns:

open weak zip files.