Package org.eclipse.aether.named.support

Class NamedLockFactorySupport

java.lang.Object

org.eclipse.aether.named.support.NamedLockFactorySupport

All Implemented Interfaces:

NamedLockFactory

Direct Known Subclasses:

FileLockNamedLockFactory, LocalReadWriteLockNamedLockFactory, LocalSemaphoreNamedLockFactory, NoopNamedLockFactory

public abstract class NamedLockFactorySupport
extends java.lang.Object
implements NamedLockFactory

Support class for NamedLockFactory implementations providing reference counting.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	NamedLockFactorySupport.NamedLockHolder

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.concurrent.ConcurrentMap<java.lang.String,NamedLockFactorySupport.NamedLockHolder>	locks
protected org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor	Description
NamedLockFactorySupport()

Method Summary

Modifier and Type	Method	Description
void	closeLock(java.lang.String name)
protected abstract NamedLockSupport	createLock(java.lang.String name)	Implementations shall create and return NamedLockSupport for given name, this method must never return null.
protected void	destroyLock(java.lang.String name)	Implementation may override this (empty) method to perform some sort of implementation specific cleanup for given lock name.
protected void	finalize()
NamedLockSupport	getLock(java.lang.String name)	Creates or reuses existing NamedLock.
void	shutdown()	Performs a clean shut down of the factory.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.slf4j.Logger logger

locks

private final java.util.concurrent.ConcurrentMap<java.lang.String,NamedLockFactorySupport.NamedLockHolder> locks

Constructor Detail

NamedLockFactorySupport

public NamedLockFactorySupport()

Method Detail

getLock

public NamedLockSupport getLock(java.lang.String name)

Description copied from interface: NamedLockFactory

Creates or reuses existing NamedLock. Returns instance MUST BE treated as "resource", best in try-with-resource block.

Specified by:

getLock in interface NamedLockFactory

Parameters:

name - the lock name, must not be null.

Returns:

named lock instance, never null.

shutdown

public void shutdown()

Description copied from interface: NamedLockFactory

Performs a clean shut down of the factory.

Specified by:

shutdown in interface NamedLockFactory

closeLock

public void closeLock(java.lang.String name)

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

createLock

protected abstract NamedLockSupport createLock(java.lang.String name)

Implementations shall create and return NamedLockSupport for given name, this method must never return null.

destroyLock

protected void destroyLock(java.lang.String name)

Implementation may override this (empty) method to perform some sort of implementation specific cleanup for given lock name. Invoked when reference count for given name drops to zero and named lock was removed.