Java Doc for LockManager.java in » Database-JDBC-Connection-Pool » Apache-commons-transaction-1.2 » org » apache » commons » transaction » locking » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database JDBC Connection Pool » Apache commons transaction 1.2 » org.apache.commons.transaction.locking

Source Cross Reference Class Diagram Java Document (Java Doc)

org.apache.commons.transaction.locking .LockManager

All known Subclasses:   org.apache.commons.transaction.locking .GenericLockManager,
LockManager
public interface LockManager (Code)
A manager for multi level locks on resources. Encapsulates creation, removal, and retrieval of locks. Each resource can have at most a single lock. However, it may be possible for more than one accessing entity to have influence on this lock via different lock levels that may be provided by the according implementation of MultiLevelLock .
version:
   $Id: LockManager.java 493628 2007-01-07 01:42:48Z joerg $
See Also:   MultiLevelLock

Method Summary
public MultiLevelLock atomicGetOrCreateLock(Object resourceId)
     Either gets an existing lock on the specified resource or creates one if none exists.
public MultiLevelLock getLock(Object resourceId)
     Gets an existing lock on the specified resource.
public void removeLock(MultiLevelLock lock)
     Removes the specified lock from the associated resource.

Method Detail
atomicGetOrCreateLock
public MultiLevelLock atomicGetOrCreateLock(Object resourceId)(Code)
Either gets an existing lock on the specified resource or creates one if none exists. This methods guarantees to do this atomically.
Parameters:
  resourceId - the resource to get or create the lock on the lock for the specified resource

getLock
public MultiLevelLock getLock(Object resourceId)(Code)
Gets an existing lock on the specified resource. If none exists it returns null.
Parameters:
  resourceId - the resource to get the lock for the lock on the specified resource

removeLock
public void removeLock(MultiLevelLock lock)(Code)
Removes the specified lock from the associated resource.
Parameters:
  lock - the lock to be removed

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