org.apache.jackrabbit.jcr2spi.lock
Interface LockManager

All Known Implementing Classes:

DefaultLockManager, LockManagerImpl

public interface LockManager

Defines the functionality needed for locking and unlocking nodes.

Method Summary

void	addLockToken(java.lang.String lt) Invoked by a session to inform that a lock token has been added.
void	checkLock(NodeState nodeState) Check whether the given node state is locked by somebody else than the current session.
javax.jcr.lock.Lock	getLock(NodeState nodeState) Returns the Lock object that applies to a node.
java.lang.String[]	getLockTokens()
boolean	isLocked(NodeState nodeState) Returns true if this node is locked either as a result of a lock held by this node or by a deep lock on a node above this node; otherwise returns false.
javax.jcr.lock.Lock	lock(NodeState nodeState, boolean isDeep, boolean isSessionScoped) Lock a node.
void	removeLockToken(java.lang.String lt) Invoked by a session to inform that a lock token has been removed.
void	unlock(NodeState nodeState) Removes the lock on a node.

Method Detail

lock

javax.jcr.lock.Lock lock(NodeState nodeState,
                         boolean isDeep,
                         boolean isSessionScoped)
                         throws javax.jcr.lock.LockException,
                                javax.jcr.RepositoryException

Lock a node. Checks whether the node is not locked and then returns a lock object for this node.

Parameters:

nodeState -

isDeep - whether the lock applies to this node only

isSessionScoped - whether the lock is session scoped

Returns:

lock object

Throws:

javax.jcr.lock.LockException - if this node already is locked, or some descendant node is locked and isDeep is true

javax.jcr.RepositoryException

See Also:

Node.lock(boolean, boolean)

unlock

void unlock(NodeState nodeState)
            throws javax.jcr.lock.LockException,
                   javax.jcr.RepositoryException

Removes the lock on a node.

Parameters:

nodeState -

Throws:

javax.jcr.lock.LockException - if this node is not locked or the session does not have the correct lock token

javax.jcr.RepositoryException

See Also:

Node.unlock()

getLock

javax.jcr.lock.Lock getLock(NodeState nodeState)
                            throws javax.jcr.lock.LockException,
                                   javax.jcr.RepositoryException

Returns the Lock object that applies to a node. This may be either a lock on this node itself or a deep lock on a node above this node.

Parameters:

nodeState -

Returns:

lock object

Throws:

javax.jcr.lock.LockException - if this node is not locked

javax.jcr.RepositoryException

See Also:

Node.getLock()

isLocked

boolean isLocked(NodeState nodeState)
                 throws javax.jcr.RepositoryException

Returns true if this node is locked either as a result of a lock held by this node or by a deep lock on a node above this node; otherwise returns false.

Parameters:

nodeState -

Returns:

true if this node is locked either as a result of a lock held by this node or by a deep lock on a node above this node; otherwise returns false

Throws:

javax.jcr.RepositoryException

See Also:

Node.isLocked()

checkLock

void checkLock(NodeState nodeState)
               throws javax.jcr.lock.LockException,
                      javax.jcr.RepositoryException

Check whether the given node state is locked by somebody else than the current session. Access is allowed if the node is not locked or if the session itself holds the lock to this node, i.e. the session contains the lock token for the lock. If the node is not locked at all this method returns silently.

Parameters:

nodeState -

Throws:

javax.jcr.lock.LockException - if write access to the specified node is not allowed

javax.jcr.RepositoryException - if some other error occurs

getLockTokens

java.lang.String[] getLockTokens()

Returns:

addLockToken

void addLockToken(java.lang.String lt)
                  throws javax.jcr.lock.LockException,
                         javax.jcr.RepositoryException

Invoked by a session to inform that a lock token has been added.

Parameters:

lt - added lock token

Throws:

javax.jcr.lock.LockException

javax.jcr.RepositoryException

removeLockToken

void removeLockToken(java.lang.String lt)
                     throws javax.jcr.lock.LockException,
                            javax.jcr.RepositoryException

Invoked by a session to inform that a lock token has been removed.

Parameters:

lt - removed lock token

Throws:

javax.jcr.lock.LockException

javax.jcr.RepositoryException