LuteceUserCacheService.java

/*
 * Copyright (c) 2002-2016, Mairie de Paris
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice
 *     and the following disclaimer.
 *
 *  2. Redistributions in binary form must reproduce the above copyright notice
 *     and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *
 *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
 *     contributors may be used to endorse or promote products derived from
 *     this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * License 1.0
 */
package fr.paris.lutece.portal.service.security;

import fr.paris.lutece.portal.service.cache.AbstractCacheableService;

/**
 * Cache service for LuteceUserService
 */
public final class LuteceUserCacheService extends AbstractCacheableService
{
    private static final String CACHE_SERVICE_NAME = "LuteceUserCacheService";
    private static volatile LuteceUserCacheService _instance;

    /**
     * Private constructor
     */
    private LuteceUserCacheService( )
    {
        initCache( );
    }

    /**
     * Get the instance of the cache service
     * 
     * @return The instance of the cache service
     */
    public static LuteceUserCacheService getInstance( )
    {
        if ( _instance == null )
        {
            synchronized( LuteceUserCacheService.class )
            {
                // Ignore double null check error : attribute is volatile
                if ( _instance == null )
                {
                    _instance = new LuteceUserCacheService( );
                }
            }
        }

        return _instance;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String getName( )
    {
        return CACHE_SERVICE_NAME;
    }
}