[b]import EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap; /*error*/
import EDU.oswego.cs.dl.util.concurrent.ReadWriteLock; /*error*/
import EDU.oswego.cs.dl.util.concurrent.ReentrantWriterPreferenceRe
adWriteLock; /*error*/

/**
* This class extends RDBMUserLayoutStore and implements instantiating and
* storing layouts that conform to the design of the distribute layout
* management system. These layouts consist of two types: layout fragments
* that are the layouts owned by a user specified in dlm.xml, and composite
* view layouts which represent regular users with zero or more UI elements
* incorporated from layout fragments. Only a user's personal layout fragment
* is
*
* @version $Revision: 36721 $ $Date: 2006-09-25 11:26:24 -0400 (Mon, 25 Sep 2006) $
* @since uPortal 2.5
*/
public class RDBMDistributedLayoutStore
extends RDBMUserLayoutStore
{
public static final String RCS_ID = "@(#) $Header$";
private static final Log LOG = LogFactory.getLog(RDBMDistributedLayoutStore.class);

private String systemDefaultUser = null;
private boolean systemDefaultUserLoaded = false;
private Properties properties = null;
private FragmentDefinition[] definitions = null;
private LayoutDecorator decorator = null;
private FragmentActivator activator = null;
private Object initializationLock = new Object();
private boolean initialized = false;
static final String TEMPLATE_USER_NAME
= "org.jasig.portal.services.Authentication.defaultTemplat
eUserName";
static final String DECORATOR_PROPERTY = "layoutDecorator";

private static final int THEME = 0;
private static final int STRUCT = 1;

// Cache for theme stylesheet descriptors
private static SmartCache tsdCache;
// Cache for structure stylesheet descriptors
private static SmartCache ssdCache;

/** Map of read/writer lock objects; one per unique person. ==blok ni error*/
private Map mLocks = new ConcurrentHashMap();

private final ReadWriteLock getReadWriteLock(IPerson person)
{
Object key = new Integer(person.getID());

ReadWriteLock lock = (ReadWriteLock) mLocks.get(key);

if (null == lock)
{
lock = new ReentrantWriterPreferenceReadWriteLock();

mLocks.put(key, lock);
}

return lock;
}

private void acquireReadLock(IPerson person) throws InterruptedException
{
getReadWriteLock(person).readLock().acquire(); //error
}

private void releaseReadLock(IPerson person)
{
getReadWriteLock(person).readLock().release(); //error
}