// ========================================================================
// Copyright (c) 2004-2009 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
package net.hasor.rsf.json;
import java.net.URL;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/* ------------------------------------------------------------ */
/** ClassLoader Helper.
* This helper class allows classes to be loaded either from the
* Thread's ContextClassLoader, the classloader of the derived class
* or the system ClassLoader.
*
* <B>Usage:</B><PRE>
* public class MyClass {
* void myMethod() {
* ...
* Class c=Loader.loadClass(this.getClass(),classname);
* ...
* }
* </PRE>
*
*/
class Loader {
/* ------------------------------------------------------------ */
public static URL getResource(Class<?> loadClass, String name, boolean checkParents) throws ClassNotFoundException {
URL url = null;
ClassLoader loader = Thread.currentThread().getContextClassLoader();
while (url == null && loader != null) {
url = loader.getResource(name);
loader = (url == null && checkParents) ? loader.getParent() : null;
}
loader = loadClass == null ? null : loadClass.getClassLoader();
while (url == null && loader != null) {
url = loader.getResource(name);
loader = (url == null && checkParents) ? loader.getParent() : null;
}
if (url == null) {
url = ClassLoader.getSystemResource(name);
}
return url;
}
/* ------------------------------------------------------------ */
@SuppressWarnings("rawtypes")
public static Class loadClass(Class loadClass, String name) throws ClassNotFoundException {
return loadClass(loadClass, name, false);
}
/* ------------------------------------------------------------ */
/** Load a class.
*
* @param loadClass
* @param name
* @param checkParents If true, try loading directly from parent classloaders.
* @return Class
* @throws ClassNotFoundException
*/
@SuppressWarnings("rawtypes")
public static Class loadClass(Class loadClass, String name, boolean checkParents) throws ClassNotFoundException {
ClassNotFoundException ex = null;
Class<?> c = null;
ClassLoader loader = Thread.currentThread().getContextClassLoader();
while (c == null && loader != null) {
try {
c = loader.loadClass(name);
} catch (ClassNotFoundException e) {
if (ex == null)
ex = e;
}
loader = (c == null && checkParents) ? loader.getParent() : null;
}
loader = loadClass == null ? null : loadClass.getClassLoader();
while (c == null && loader != null) {
try {
c = loader.loadClass(name);
} catch (ClassNotFoundException e) {
if (ex == null)
ex = e;
}
loader = (c == null && checkParents) ? loader.getParent() : null;
}
if (c == null) {
try {
c = Class.forName(name);
} catch (ClassNotFoundException e) {
if (ex == null)
ex = e;
}
}
if (c != null)
return c;
throw ex;
}
public static ResourceBundle getResourceBundle(Class<?> loadClass, String name, boolean checkParents, Locale locale) throws MissingResourceException {
MissingResourceException ex = null;
ResourceBundle bundle = null;
ClassLoader loader = Thread.currentThread().getContextClassLoader();
while (bundle == null && loader != null) {
try {
bundle = ResourceBundle.getBundle(name, locale, loader);
} catch (MissingResourceException e) {
if (ex == null)
ex = e;
}
loader = (bundle == null && checkParents) ? loader.getParent() : null;
}
loader = loadClass == null ? null : loadClass.getClassLoader();
while (bundle == null && loader != null) {
try {
bundle = ResourceBundle.getBundle(name, locale, loader);
} catch (MissingResourceException e) {
if (ex == null)
ex = e;
}
loader = (bundle == null && checkParents) ? loader.getParent() : null;
}
if (bundle == null) {
try {
bundle = ResourceBundle.getBundle(name, locale);
} catch (MissingResourceException e) {
if (ex == null)
ex = e;
}
}
if (bundle != null)
return bundle;
throw ex;
}
}