com.hp.hpl.jena.util.SystemUtils Maven / Gradle / Ivy

Go to download
/*
 * (c) Copyright 2004, 2005, 2006, 2007, 2008, 2009 Hewlett-Packard Development Company, LP
 * [See end of file]
 */

package com.hp.hpl.jena.util;

import com.hp.hpl.jena.shared.JenaException ;

import org.slf4j.Logger ;
import org.slf4j.LoggerFactory ;

/** 
 * Note: this has been copied here from ARQ.
 *  
 * @author Andy Seaborne
 */
public class SystemUtils
{
    private static Logger log = LoggerFactory.getLogger ( SystemUtils.class.getName() ) ;
    
    static public ClassLoader chooseClassLoader()
    {
        ClassLoader classLoader = Thread.currentThread().getContextClassLoader() ;
    
        if ( classLoader != null )
            log.trace ( "Using thread classloader" ) ;
        
        if ( classLoader == null )
        {
            classLoader = ClassLoader.getSystemClassLoader() ;
            if ( classLoader != null )
                log.trace ( "Using system classloader" ) ;
        }
        
        if ( classLoader == null )
            throw new JenaException ( "Failed to find a classloader" ) ;

        return classLoader ;
    }
    
}

/*
 * (c) Copyright 2009 Hewlett-Packard Development Company, LP
 * 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, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */