Package org.apache.openjpa.kernel

Class AbstractLockManager

java.lang.Object

org.apache.openjpa.kernel.AbstractLockManager

All Implemented Interfaces:

LockLevels, LockManager, Closeable

Direct Known Subclasses:

NoneLockManager, VersionLockManager

public abstract class AbstractLockManager
extends Object
implements LockManager

Abstract LockManager implementation.

Author:

Marc Prud'hommeaux

Field Summary

Fields

Modifier and Type	Field	Description
protected StoreContext	ctx	The context against which this LockManager is operating.
protected Log	log	Runtime log to write locking messages to.

Fields inherited from interface org.apache.openjpa.kernel.LockLevels

LOCK_NONE, LOCK_READ, LOCK_WRITE

Constructor Summary

Constructors

Constructor	Description
AbstractLockManager()

Method Summary

Modifier and Type	Method	Description
void	beginTransaction()	Does nothing by default.
void	close()	Does nothing by default.
void	endTransaction()	Does nothing by default.
StoreContext	getContext()
void	lockAll(Collection sms, int level, int timeout, Object context)	Delegates to LockManager.lock(org.apache.openjpa.kernel.OpenJPAStateManager, int, int, java.lang.Object) with each element of the collection
void	setContext(StoreContext ctx)	Set the context this lock manager is associated with.
boolean	skipRelationFieldLock()	Default not to skip relation field to maintain PessimisticLockManager semantics.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.kernel.LockManager

getLockLevel, lock, refreshLock, release

Field Details

ctx

protected StoreContext ctx

The context against which this LockManager is operating.

log

protected Log log

Runtime log to write locking messages to.

Constructor Details

AbstractLockManager

public AbstractLockManager()

Method Details

setContext

public void setContext(StoreContext ctx)

Description copied from interface: LockManager

Set the context this lock manager is associated with. This will be invoked in the lock manager before any other methods are called.

Specified by:

setContext in interface LockManager

getContext

public StoreContext getContext()

lockAll

public void lockAll(Collection sms,
 int level,
 int timeout,
 Object context)

Delegates to LockManager.lock(org.apache.openjpa.kernel.OpenJPAStateManager, int, int, java.lang.Object) with each element of the collection

Specified by:

lockAll in interface LockManager

See Also:

• LockManager.lock(org.apache.openjpa.kernel.OpenJPAStateManager, int, int, java.lang.Object)

beginTransaction

public void beginTransaction()

Does nothing by default.

Specified by:

beginTransaction in interface LockManager

endTransaction

public void endTransaction()

Does nothing by default.

Specified by:

endTransaction in interface LockManager

close

public void close()

Does nothing by default.

Specified by:

close in interface Closeable

Specified by:

close in interface LockManager

skipRelationFieldLock

public boolean skipRelationFieldLock()

Default not to skip relation field to maintain PessimisticLockManager semantics.