001 /* 002 * JBoss, Home of Professional Open Source. 003 * Copyright 2008, Red Hat Middleware LLC, and individual contributors 004 * as indicated by the @author tags. See the copyright.txt file in the 005 * distribution for a full listing of individual contributors. 006 * 007 * This is free software; you can redistribute it and/or modify it 008 * under the terms of the GNU Lesser General Public License as 009 * published by the Free Software Foundation; either version 2.1 of 010 * the License, or (at your option) any later version. 011 * 012 * This software is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * You should have received a copy of the GNU Lesser General Public 018 * License along with this software; if not, write to the Free 019 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 020 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 021 */ 022 package org.jboss.dna.common.component; 023 024 import net.jcip.annotations.Immutable; 025 026 /** 027 * @author Randall Hauch 028 */ 029 @Immutable 030 public class StandardClassLoaderFactory implements ClassLoaderFactory { 031 032 private final ClassLoader delegate; 033 private final boolean useCurrentThreadContextClassLoader; 034 035 public StandardClassLoaderFactory() { 036 this(true, null); 037 } 038 039 public StandardClassLoaderFactory( final ClassLoader delegate ) { 040 this(true, delegate); 041 } 042 043 public StandardClassLoaderFactory( boolean useCurrentThreadContextClassLoader, final ClassLoader delegate ) { 044 this.delegate = delegate != null ? delegate : this.getClass().getClassLoader(); 045 this.useCurrentThreadContextClassLoader = useCurrentThreadContextClassLoader; 046 } 047 048 /** 049 * {@inheritDoc} 050 */ 051 public ClassLoader getClassLoader( String... classpath ) { 052 ClassLoader result = null; 053 if (this.useCurrentThreadContextClassLoader) result = Thread.currentThread().getContextClassLoader(); 054 if (result == null) result = this.delegate; 055 return result; 056 } 057 }