001 /* 002 * JBoss DNA (http://www.jboss.org/dna) 003 * See the COPYRIGHT.txt file distributed with this work for information 004 * regarding copyright ownership. Some portions may be licensed 005 * to Red Hat, Inc. under one or more contributor license agreements. 006 * See the AUTHORS.txt file in the distribution for a full listing of 007 * individual contributors. 008 * 009 * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA 010 * is licensed to you under the terms of the GNU Lesser General Public License as 011 * published by the Free Software Foundation; either version 2.1 of 012 * the License, or (at your option) any later version. 013 * 014 * JBoss DNA is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 017 * Lesser General Public License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this software; if not, write to the Free 021 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 022 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 023 */ 024 package org.jboss.dna.common.component; 025 026 import net.jcip.annotations.Immutable; 027 028 /** 029 * @author Randall Hauch 030 */ 031 @Immutable 032 public class StandardClassLoaderFactory implements ClassLoaderFactory { 033 034 private final ClassLoader delegate; 035 private final boolean useCurrentThreadContextClassLoader; 036 037 public StandardClassLoaderFactory() { 038 this(true, null); 039 } 040 041 public StandardClassLoaderFactory( final ClassLoader delegate ) { 042 this(true, delegate); 043 } 044 045 public StandardClassLoaderFactory( boolean useCurrentThreadContextClassLoader, final ClassLoader delegate ) { 046 this.delegate = delegate != null ? delegate : this.getClass().getClassLoader(); 047 this.useCurrentThreadContextClassLoader = useCurrentThreadContextClassLoader; 048 } 049 050 /** 051 * {@inheritDoc} 052 */ 053 public ClassLoader getClassLoader( String... classpath ) { 054 ClassLoader result = null; 055 if (this.useCurrentThreadContextClassLoader) result = Thread.currentThread().getContextClassLoader(); 056 if (result == null) result = this.delegate; 057 return result; 058 } 059 }