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Hibernate example source code file (ConcurrentSecondLevelCacheStatisticsImpl.java)

This example Hibernate source code file (ConcurrentSecondLevelCacheStatisticsImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

atomiclong, atomiclong, categorizedstatistics, concurrentsecondlevelcachestatisticsimpl, hashmap, iterator, map, map, region, secondlevelcachestatistics, secondlevelcachestatistics, string, stringbuilder, stringbuilder, util

The Hibernate ConcurrentSecondLevelCacheStatisticsImpl.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2011, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.stat.internal;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;

import org.hibernate.cache.spi.CacheKey;
import org.hibernate.cache.spi.Region;
import org.hibernate.stat.SecondLevelCacheStatistics;

/**
 * Second level cache statistics of a specific region
 *
 * @author Alex Snaps
 */
public class ConcurrentSecondLevelCacheStatisticsImpl extends CategorizedStatistics implements SecondLevelCacheStatistics {
	private final transient Region region;
	private AtomicLong hitCount = new AtomicLong();
	private AtomicLong missCount = new AtomicLong();
	private AtomicLong putCount = new AtomicLong();

	ConcurrentSecondLevelCacheStatisticsImpl(Region region) {
		super( region.getName() );
		this.region = region;
	}

	public long getHitCount() {
		return hitCount.get();
	}

	public long getMissCount() {
		return missCount.get();
	}

	public long getPutCount() {
		return putCount.get();
	}

	public long getElementCountInMemory() {
		return region.getElementCountInMemory();
	}

	public long getElementCountOnDisk() {
		return region.getElementCountOnDisk();
	}

	public long getSizeInMemory() {
		return region.getSizeInMemory();
	}

	public Map getEntries() {
		Map map = new HashMap();
		Iterator iter = region.toMap().entrySet().iterator();
		while (iter.hasNext()) {
			Map.Entry me = (Map.Entry) iter.next();
			map.put(((CacheKey) me.getKey()).getKey(), me.getValue());
		}
		return map;
	}

	public String toString() {
		StringBuilder buf = new StringBuilder()
				.append("SecondLevelCacheStatistics")
				.append("[hitCount=").append(this.hitCount)
				.append(",missCount=").append(this.missCount)
				.append(",putCount=").append(this.putCount);
		//not sure if this would ever be null but wanted to be careful
		if (region != null) {
			buf.append(",elementCountInMemory=").append(this.getElementCountInMemory())
					.append(",elementCountOnDisk=").append(this.getElementCountOnDisk())
					.append(",sizeInMemory=").append(this.getSizeInMemory());
		}
		buf.append(']');
		return buf.toString();
	}

	void incrementHitCount() {
		hitCount.getAndIncrement();
	}

	void incrementMissCount() {
		missCount.getAndIncrement();
	}

	void incrementPutCount() {
		putCount.getAndIncrement();
	}
}

Other Hibernate examples (source code examples)

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