com.sun.tools.xjc.XJCFacade Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.tools.xjc;
import java.io.Closeable;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URLClassLoader;
/**
* A shabby driver to invoke XJC1 or XJC2 depending on the command line switch.
*
*
* This class is compiled with -source 1.2 so that we can report a nice
* user-friendly "you require Tiger" error message.
*
* @author Kohsuke Kawaguchi
*/
public class XJCFacade {
private static final String JDK_REQUIRED = "XJC requires Java SE 8 or later. Please download it from http://www.oracle.com/technetwork/java/javase/downloads";
public static void main(String[] args) throws Throwable {
String v = "2.0"; // by default, we go 2.0
for (int i = 0; i < args.length; i++) {
if (args[i].equals("-source")) {
if (i + 1 < args.length) {
v = parseVersion(args[i + 1]);
}
}
}
ClassLoader oldContextCl = SecureLoader.getContextClassLoader();
try {
ClassLoader cl = ClassLoaderBuilder.createProtectiveClassLoader(SecureLoader.getClassClassLoader(XJCFacade.class), v);
SecureLoader.setContextClassLoader(cl);
Class driver = cl.loadClass("com.sun.tools.xjc.Driver");
Method mainMethod = driver.getDeclaredMethod("main", new Class[]{String[].class});
try {
mainMethod.invoke(null, new Object[]{args});
} catch (InvocationTargetException e) {
if (e.getTargetException() != null) {
throw e.getTargetException();
}
}
} catch (UnsupportedClassVersionError e) {
System.err.println(JDK_REQUIRED);
} finally {
ClassLoader cl = SecureLoader.getContextClassLoader();
SecureLoader.setContextClassLoader(oldContextCl);
//close/cleanup all classLoaders but the one which loaded this class
while (cl != null && !oldContextCl.equals(cl)) {
if (cl instanceof Closeable) {
//JDK7+, ParallelWorldClassLoader
((Closeable) cl).close();
} else {
if (cl instanceof URLClassLoader) {
//JDK6 - API jars are loaded by instance of URLClassLoader
//so use proprietary API to release holded resources
try {
Class clUtil = oldContextCl.loadClass("sun.misc.ClassLoaderUtil");
Method release = clUtil.getDeclaredMethod("releaseLoader", URLClassLoader.class);
release.invoke(null, cl);
} catch (ClassNotFoundException ex) {
//not Sun JDK 6, ignore
System.err.println(JDK_REQUIRED);
}
}
}
cl = SecureLoader.getParentClassLoader(cl);
}
}
}
public static String parseVersion(String version) {
// no other versions supported as of now
return "2.0";
}
}