gzipstreamfactory.java

来自「Java的面向对象数据库系统的源代码」· Java 代码 · 共 57 行

// You can redistribute this software and/or modify it under the terms of
// the Ozone Core License version 1 published by ozone-db.org.
//
// Copyright (C) 2003-@year@, Leo Mekenkamp. All rights reserved.
//
// $Id: GZIPStreamFactory.java,v 1.1 2004/01/02 09:24:38 leomekenkamp Exp $

package org.ozoneDB.core.storage.gammaStore;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import org.ozoneDB.core.storage.PropertyConfigurable;
import org.ozoneDB.core.storage.PropertyInfo;

/**
 * Factory that creates streams that read/write to other streams via a GZIP
 * stream.
 *
 * @author <a href="mailto:leoATmekenkampD0Tcom">Leo Mekenkamp (mind the anti sp@m)</a>
 * @version $Id: GZIPStreamFactory.java,v 1.1 2004/01/02 09:24:38 leomekenkamp Exp $
 */
public class GZIPStreamFactory implements StreamFactory, PropertyConfigurable {
       
    private String prefix;
    
    /**
     * As prescribed by the <code>PropertyConfigurable</code> interface.
     */
    public GZIPStreamFactory(Properties properties, String prefix) {
        this.prefix = prefix;
    }
    
    public InputStream createInputStream(InputStream in) throws IOException {
        return new GZIPInputStream(in);
    }
    
    public OutputStream createOutputStream(OutputStream out) throws IOException {
        return new GZIPOutputStream(out);
    }
    
    public Collection getPropertyInfos() {
        return new LinkedList();
    }
    
    public String getPrefix() {
        return prefix;
    }
    
}