Examples of org.jasig.portal.concurrency.LockingException

org.jasig.portal.concurrency.LockingException
A LockingException describes a problem that has arisen during an attempt to create or alter an IEntityLock. If the problem occurs in the lock store, the LockingException should wrap an Exception specific to the store, like a java.sql.SQLException. @author Dan Ellentuck @version $Revision: 19776 $

            { primDeleteExpired(new Date(), lock.getEntityType(), lock.getEntityKey(), conn); }
            primUpdate(lock, newExpiration, newLockType, conn);
        }


        catch (SQLException sqle)
        { throw new LockingException("Problem updating " + lock, sqle); }
        finally
        { RDBMServices.releaseConnection(conn); }
    }

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 * @exception org.jasig.portal.concurrency.LockingException
 */
public void convert(IEntityLock lock, int newType, int newDuration) throws LockingException
{
    if ( lock.getLockType() == newType )
       { throw new LockingException("Could not convert " + lock + " : old and new lock TYPEs are the same."); }


    if ( ! isValidLockType(newType)  )
        { throw new LockingException("Could not convert " + lock + " : lock TYPE " + newType + " is invalid."); }


    if ( ! isValid(lock) )
        { throw new LockingException("Could not convert " + lock + " : lock is invalid."); }


    if ( newType == WRITE_LOCK && retrieveLocks(lock.getEntityType(), lock.getEntityKey(), null).length > 1 )
        { throw new LockingException("Could not convert " + lock + " : another lock already exists."); }


    if ( newType == READ_LOCK )
        { /* Can always convert to READ */ }


    Date newExpiration = getNewExpiration(newDuration);

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    }
    catch ( Exception e )
    {
        eMsg = "ReferenceEntityLockingService.initialize(): Failed to instantiate entity lock store. " + e;
        log.error( eMsg);
        throw new LockingException(eMsg);
    }


    try
    {
        int lockDuration = PropertiesManager.getPropertyAsInt

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    IEntityLock[] locks = retrieveLocks(entityType, entityKey, null);


    if ( lockType == WRITE_LOCK ) 
    {
        if ( locks.length > 0 ) 
            { throw new LockingException("Could not create lock: entity already locked."); }
        
        getLockStore().add(newLock);


        locks = retrieveLocks(entityType, entityKey, null);
        if ( locks.length > 1 )  // another lock snuck in
        { 
            release(newLock);
            throw new LockingException("Could not create lock: entity already locked.");
        }
    }


    else // ( lockType == READ_LOCK )
    {
        for ( int i = 0; i<locks.length; i++ )
        {
            if ( locks[i].getLockType() == WRITE_LOCK )
                { throw new LockingException("Could not create lock: entity already write locked."); }
            else
            {
                if ( locks[i].equals(newLock) ) 
                { 
                    // another read lock from the same owner; bump the expiration time.

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        Date newExpiration = getNewExpiration(duration);
        getLockStore().update(lock, newExpiration);
        ((EntityLockImpl)lock).setExpirationTime(newExpiration);
    }
    else
        { throw new LockingException("Could not renew " + lock + " : lock is invalid."); }
}

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    try
        { return ReferenceEntityLockService.singleton(); }
    catch ( LockingException le )
    {
        log.error( "ReferenceEntityLockServiceFactory.newLockService(): " + le);
        throw new LockingException(le);
    }
}

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 */
public void update(IEntityLock lock, java.util.Date newExpiration, Integer newLockType)
throws LockingException
{
    if ( find(lock) == null )
        { throw new LockingException("Problem updating " + lock + " : not found in store."); }
    primAdd(lock, newExpiration);
}

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    }
    catch (Exception e)
    {
        eMsg = "EntityLockService.initialize(): Problem creating entity lock service...";
        log.error( eMsg, e);
        throw new LockingException(eMsg, e);
    }
}

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Related Classes of org.jasig.portal.concurrency.LockingException

org.jasig.portal.concurrency.locking.MemoryEntityLockStore

org.jasig.portal.concurrency.locking.RDBMEntityLockStore

org.jasig.portal.concurrency.locking.ReferenceEntityLockService

org.jasig.portal.concurrency.locking.ReferenceEntityLockServiceFactory

org.jasig.portal.services.EntityLockService

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