org.eclipse.smila.search.index.IndexCleaner.java Source code

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Here is the source code for org.eclipse.smila.search.index.IndexCleaner.java

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/***********************************************************************************************************************
 * Copyright (c) 2008 empolis GmbH and brox IT Solutions GmbH. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: August Georg Schmidt (brox IT Solutions GmbH) - initial API and implementation
 **********************************************************************************************************************/
package org.eclipse.smila.search.index;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * This class does the garbage collection for index connections.
 * 
 * @author August Georg Schmidt (BROX)
 */
public class IndexCleaner extends Thread {

    /**
     * Sleep time for garbage collection.
     */
    private static final int SLEEP_TIME = 500;

    /**
     * 
     */
    public IndexCleaner() {
        this.setDaemon(true); // garbage collector should no reason to kill process
        this.start(); // start garbage collector
    }

    /**
     * {@inheritDoc}
     * 
     * @see java.lang.Runnable#run()
     */
    @Override
    public void run() {
        final Log log = LogFactory.getLog(getClass());
        while (true) {
            try {
                sleep(SLEEP_TIME);
                IndexManager.doGarbageCollection();
            } catch (final InterruptedException e) {
                log.error("unable to set cleaner into wait state", e.fillInStackTrace());
            }
        }
    }
}