public class LockManagerCommonsImpl extends java.lang.Object implements LockManager
LockManager
implementation based on apache's commons-transaction
locking part.
The timeout of locks is currently (OJB 1.0.2) not supported, maybe
in further versions.DEFAULT_BLOCK_TIMEOUT, DEFAULT_LOCK_TIMEOUT
IL_DEFAULT, IL_NONE, IL_OPTIMISTIC, IL_READ_COMMITTED, IL_READ_UNCOMMITTED, IL_REPEATABLE_READ, IL_SERIALIZABLE, LITERAL_IL_NONE, LITERAL_IL_OPTIMISTIC, LITERAL_IL_READ_COMMITTED, LITERAL_IL_READ_UNCOMMITTED, LITERAL_IL_REPEATABLE_READ, LITERAL_IL_SERIALIZABLE
Constructor and Description |
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LockManagerCommonsImpl() |
Modifier and Type | Method and Description |
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long |
getBlockTimeout()
The maximal time to wait for acquire a lock.
|
java.lang.String |
getLockInfo()
Returns info about the used lock manager implementation and the state
of the lock manager.
|
long |
getLockTimeout()
Get the current used lock timeout value in milliseconds.
|
boolean |
hasRead(java.lang.Object key,
java.lang.Object resourceId)
Checks if there is a read lock for owner key on resource object.
|
boolean |
hasUpgrade(java.lang.Object key,
java.lang.Object resourceId)
Checks if there is a upgrade lock for lock key on resource object.
|
boolean |
hasWrite(java.lang.Object key,
java.lang.Object resourceId)
Checks if there is a write lock for lock key on resource object.
|
boolean |
readLock(java.lang.Object key,
java.lang.Object resourceId,
int isolationLevel)
Acquires a readlock for lock key on resource object.
|
boolean |
releaseLock(java.lang.Object key,
java.lang.Object resourceId)
Releases a lock for lock key on resource object.
|
void |
releaseLocks(java.lang.Object key)
Release all resource locks hold by the specified owner key.
|
void |
setBlockTimeout(long blockTimeout)
Set the maximal time to wait for acquire a lock in milliseconds.
|
void |
setLockTimeout(long timeout)
Set the lock timeout value in milliseconds.
|
boolean |
upgradeLock(java.lang.Object key,
java.lang.Object resourceId,
int isolationLevel)
Acquire an upgrade lock.
|
boolean |
writeLock(java.lang.Object key,
java.lang.Object resourceId,
int isolationLevel)
Acquires a write lock for lock key on resource object.
|
public long getLockTimeout()
LockManager
getLockTimeout
in interface LockManager
public void setLockTimeout(long timeout)
LockManager
setLockTimeout
in interface LockManager
timeout
- The lock timeout in ms of acquired read/write/upgrade locks.public long getBlockTimeout()
LockManager
getBlockTimeout
in interface LockManager
public void setBlockTimeout(long blockTimeout)
LockManager
setBlockTimeout
in interface LockManager
blockTimeout
- The time to wait for acquire a lock.public java.lang.String getLockInfo()
LockManager
getLockInfo
in interface LockManager
public boolean readLock(java.lang.Object key, java.lang.Object resourceId, int isolationLevel)
LockManager
readLock
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to lock.isolationLevel
- The isolation level of the lock.public boolean writeLock(java.lang.Object key, java.lang.Object resourceId, int isolationLevel)
LockManager
writeLock
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to lock.isolationLevel
- The isolation level of the lock.public boolean upgradeLock(java.lang.Object key, java.lang.Object resourceId, int isolationLevel)
LockManager
upgradeLock
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to lock.isolationLevel
- The isolation level of the lock.public boolean releaseLock(java.lang.Object key, java.lang.Object resourceId)
LockManager
releaseLock
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to release.public void releaseLocks(java.lang.Object key)
LockManager
releaseLocks
in interface LockManager
key
- The owner key to release all associated locks.public boolean hasRead(java.lang.Object key, java.lang.Object resourceId)
LockManager
hasRead
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to check.public boolean hasWrite(java.lang.Object key, java.lang.Object resourceId)
LockManager
hasWrite
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to check.public boolean hasUpgrade(java.lang.Object key, java.lang.Object resourceId)
LockManager
hasUpgrade
in interface LockManager
key
- The owner key of the lock.resourceId
- The resource to check.(C) 2002 - 2005 Apache Software Foundation
All rights reserved. Published under the Apache License 2.0.
http://db.apache.org/ojb
Version: 1.0.4, 2005-12-30