co.stateful.spi

Interface Locks

All Known Implementing Classes:

QtLocks

@Immutable
public interface Locks

Locks.

Since:

1.1

Version:

$Id$

Author:

Yegor Bugayenko (yegor@tpc2.com)

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX Maximum allowed per account.

Method Summary

Methods

Modifier and Type	Method and Description
String	lock(String name, String label) Lock it.
Map<String,String>	names() Get list of them all, and their labels.
void	unlock(String name) Unlock it.
String	unlock(String name, String label) Unlock only if label matches.

Field Detail

MAX

static final int MAX

Maximum allowed per account.

See Also:

Constant Field Values

Method Detail

names

Map<String,String> names()
                         throws IOException

Get list of them all, and their labels.

Returns:

List of locks

Throws:

IOException - If fails

lock

String lock(String name,
          String label)
            throws IOException

Lock it.

Parameters:

name - Unique name of the lock

label - Label to attach

Returns:

Empty if success or a label of a current lock

Throws:

IOException - If fails

unlock

void unlock(String name)
            throws IOException

Unlock it.

Parameters:

name - Unique name of the lock

Throws:

IOException - If fails

unlock

String unlock(String name,
            String label)
              throws IOException

Unlock only if label matches.

Parameters:

name - Unique name of the lock

label - Label to match

Returns:

Empty if success or label of current lock

Throws:

IOException - If fails

Since:

1.6