1 /** 2 * Copyright 2005-2014 The Kuali Foundation 3 * 4 * Licensed under the Educational Community License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.opensource.org/licenses/ecl2.php 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.kuali.rice.core.impl.resourceloader; 17 18 import org.apache.log4j.Logger; 19 import org.kuali.rice.core.api.resourceloader.ResourceLoader; 20 import org.kuali.rice.core.api.resourceloader.ResourceLoaderException; 21 import org.kuali.rice.core.api.util.ContextClassLoaderProxy; 22 23 /** 24 * A class for {@link org.kuali.rice.core.api.resourceloader.ResourceLoader} related utilities. 25 * 26 * @author Kuali Rice Team (rice.collab@kuali.org) 27 */ 28 public final class ResourceLoaderUtil { 29 private static final Logger LOG = Logger.getLogger(ResourceLoaderUtil.class); 30 31 private ResourceLoaderUtil() { 32 throw new UnsupportedOperationException("do not call"); 33 } 34 35 /** 36 * Instantiates className class via no-arg constructor, and returns a proxy 37 * that wraps invocations with the specified classLoader as the context classloader 38 * @param className the class to instantiate 39 * @param classLoader the classLoader to set as the context classloader 40 * @return a proxy that wraps an instance with code that sets and unsets the appropriate context classloader 41 */ 42 public static Object createObject(String className, ClassLoader classLoader) { 43 try { 44 Class theClass = Class.forName(className, true, classLoader); 45 return ContextClassLoaderProxy.wrap(theClass.newInstance()); 46 } catch (ClassNotFoundException e) { 47 LOG.error("Error instantiating class '" + className + "' in classloader " + classLoader, e); 48 return null; 49 } catch (InstantiationException e) { 50 throw new ResourceLoaderException(e); 51 } catch (IllegalAccessException e) { 52 throw new ResourceLoaderException(e); 53 } 54 } 55 56 }