PageCacheService.java
- /*
- * Copyright (c) 2002-2022, City of 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.page;
- import java.util.concurrent.ConcurrentHashMap;
- import fr.paris.lutece.portal.service.cache.AbstractCacheableService;
- import fr.paris.lutece.portal.service.util.AppException;
- import net.sf.ehcache.Ehcache;
- import net.sf.ehcache.Element;
- /**
- * Page Cache Service
- */
- public class PageCacheService extends AbstractCacheableService
- {
- private static final String SERVICE_NAME = "Page Cache Service";
- // Performance patch
- private static ConcurrentHashMap<String, String> _keyMemory = new ConcurrentHashMap<>( );
- /**
- * {@inheritDoc }
- */
- public String getName( )
- {
- return SERVICE_NAME;
- }
- /**
- * Get a memory key
- *
- * @param strKey
- * The key
- * @return The key
- */
- String getKey( String strKey )
- {
- String keyInMemory = _keyMemory.putIfAbsent( strKey, strKey );
- if ( keyInMemory != null )
- {
- return keyInMemory;
- }
- return strKey;
- }
- /**
- * @see net.sf.ehcache.event.CacheEventListener#notifyElementEvicted(net.sf.ehcache.Ehcache, net.sf.ehcache.Element)
- * @param cache
- * The Ehcache object
- * @param element
- * The Element object
- */
- @Override
- public void notifyElementEvicted( Ehcache cache, Element element )
- {
- removeKeyFromMap( element );
- }
- /**
- * @see net.sf.ehcache.event.CacheEventListener#notifyElementExpired(net.sf.ehcache.Ehcache, net.sf.ehcache.Element)
- * @param cache
- * The Ehcache object
- * @param element
- * The Element object
- */
- @Override
- public void notifyElementExpired( Ehcache cache, Element element )
- {
- removeKeyFromMap( element );
- }
- /**
- * @see net.sf.ehcache.event.CacheEventListener#notifyElementRemoved(net.sf.ehcache.Ehcache, net.sf.ehcache.Element)
- * @param cache
- * The Ehcache object
- * @param element
- * The Element object
- */
- @Override
- public void notifyElementRemoved( Ehcache cache, Element element )
- {
- removeKeyFromMap( element );
- }
- /**
- * @see net.sf.ehcache.event.CacheEventListener#notifyRemoveAll(net.sf.ehcache.Ehcache)
- * @param cache
- * The Ehcache object
- */
- @Override
- public void notifyRemoveAll( Ehcache cache )
- {
- _keyMemory.clear( );
- }
- /**
- * @param element
- * The Element object
- */
- public void removeKeyFromMap( Element element )
- {
- _keyMemory.remove( (String) element.getKey( ) );
- }
- /**
- * @see java.lang.Object#clone()
- * @return the instance
- */
- @Override
- public Object clone( )
- {
- throw new AppException( "This class shouldn't be cloned" );
- }
- }