javax.jcr.lock
Interface Lock

public interface Lock

Represents a lock placed on an item.

Method Summary

java.lang.String	getLockOwner() Returns the value of the jcr:lockOwner property.
java.lang.String	getLockToken() May return the lock token for this lock.
Node	getNode() Returns the lock holding node.
long	getSecondsRemaining() Returns the number of seconds remaining until this locks times out.
boolean	isDeep() Returns true if this is a deep lock; false otherwise.
boolean	isLive() Returns true if this Lock object represents a lock that is currently in effect.
boolean	isLockOwningSession() Returns true if the current session is the owner of this lock, either because it is session-scoped and bound to this session or open-scoped and this session currently holds the token for this lock.
boolean	isSessionScoped() Returns true if this is a session-scoped lock and the scope is bound to the current session.
void	refresh() If this lock's time-to-live is governed by a timer, this method resets that timer so that the lock does not timeout and expire.

Method Detail

getLockOwner

java.lang.String getLockOwner()

Returns the value of the jcr:lockOwner property. This is either the client supplied owner information (see LockManager.lock(String, boolean, boolean, long, String)), an implementation-dependent string identifying the user who either created the lock or who is bound to the session holding the lock, or null if none of these are available. The lock owner's identity is only provided for informational purposes. It does not govern who can perform an unlock or make changes to the locked nodes; that depends entirely upon who the token holder is.

Returns:

a user ID.

isDeep

boolean isDeep()

Returns true if this is a deep lock; false otherwise.

Returns:

a boolean

getNode

Node getNode()

Returns the lock holding node. Note that N.getLock().getNode() (where N is a locked node) will only return N if N is the lock holder. If N is in the subgraph of the lock holder, H, then this call will return H.

Returns:

an Node.

getLockToken

java.lang.String getLockToken()

May return the lock token for this lock. If this lock is open-scoped and the current session either holds the lock token for this lock, or the repository chooses to expose the lock token to the current session, then this method will return that lock token. Otherwise this method will return null.

Returns:

a String.

getSecondsRemaining

long getSecondsRemaining()
                         throws RepositoryException

Returns the number of seconds remaining until this locks times out. If the lock has already timed out, a negative value is returned. If the number of seconds remaining is infinite or unknown, Long.MAX_VALUE is returned.

Returns:

the number of seconds remaining until this lock times out.

Throws:

RepositoryException - if an error occurs.

Since:

JCR 2.0

isLive

boolean isLive()
               throws RepositoryException

Returns true if this Lock object represents a lock that is currently in effect. If this lock has been unlocked either explicitly or due to an implementation-specific limitation (like a timeout) then it returns false. Note that this method is intended for those cases where one is holding a Lock Java object and wants to find out whether the lock (the JCR-level entity that is attached to the lockable node) that this object originally represented still exists. For example, a timeout or explicit unlock will remove a lock from a node but the Lock Java object corresponding to that lock may still exist, and in that case its isLive method will return false.

Returns:

a boolean.

Throws:

RepositoryException - if an error occurs.

isSessionScoped

boolean isSessionScoped()

Returns true if this is a session-scoped lock and the scope is bound to the current session. Returns false otherwise.

Returns:

a boolean.

isLockOwningSession

boolean isLockOwningSession()

Returns true if the current session is the owner of this lock, either because it is session-scoped and bound to this session or open-scoped and this session currently holds the token for this lock. Returns false otherwise.

Returns:

a boolean.

Since:

JCR 2.0

refresh

void refresh()
             throws LockException,
                    RepositoryException

If this lock's time-to-live is governed by a timer, this method resets that timer so that the lock does not timeout and expire. If this lock's time-to-live is not governed by a timer, then this method has no effect.

Throws:

LockException - if this Session does not hold the correct lock token for this lock.

RepositoryException - if another error occurs.