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src/share/jaxws_classes/com/sun/tools/internal/xjc/ClassLoaderBuilder.java@9c07ef4934dd (annotated)

src/share/jaxws_classes/com/sun/tools/internal/xjc/ClassLoaderBuilder.java

Thu, 31 Aug 2017 15:18:52 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:18:52 +0800

changeset 637

9c07ef4934dd

parent 368

0989ad8c0860

parent 0

373ffda63c9a

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	package com.sun.tools.internal.xjc;
aoqi@0	27
aoqi@0	28	import java.net.MalformedURLException;
aoqi@0	29	import java.net.URL;
aoqi@0	30	import java.net.URLClassLoader;
aoqi@0	31	import java.util.ArrayList;
aoqi@0	32	import java.util.Arrays;
aoqi@0	33	import java.util.List;
aoqi@0	34
aoqi@0	35	import javax.xml.bind.JAXBContext;
aoqi@0	36
aoqi@0	37	import com.sun.istack.internal.tools.MaskingClassLoader;
aoqi@0	38	import com.sun.istack.internal.tools.ParallelWorldClassLoader;
aoqi@0	39
aoqi@0	40	/**
aoqi@0	41	* Creates a class loader configured to run XJC 1.0/2.0 safely without
aoqi@0	42	* interference with JAXB 2.0 API in Mustang.
aoqi@0	43	*
aoqi@0	44	* @author Kohsuke Kawaguchi
aoqi@0	45	*/
aoqi@0	46	class ClassLoaderBuilder {
aoqi@0	47
aoqi@0	48	/**
aoqi@0	49	* Creates a new class loader that eventually delegates to the given {@link ClassLoader}
aoqi@0	50	* such that XJC can be loaded by using this classloader.
aoqi@0	51	*
aoqi@0	52	* @param v
aoqi@0	53	* Either "1.0" or "2.0", indicating the version of the -source value.
aoqi@0	54	*/
aoqi@0	55	protected static ClassLoader createProtectiveClassLoader(ClassLoader cl, String v) throws ClassNotFoundException, MalformedURLException {
aoqi@0	56	if(noHack) return cl; // provide an escape hatch
aoqi@0	57
aoqi@0	58	boolean mustang = false;
aoqi@0	59
aoqi@0	60	if (SecureLoader.getClassClassLoader(JAXBContext.class) == null) {
aoqi@0	61	// JAXB API is loaded from the bootstrap. We need to override one with ours
aoqi@0	62	mustang = true;
aoqi@0	63
aoqi@0	64	List<String> mask = new ArrayList<String>(Arrays.asList(maskedPackages));
aoqi@0	65	mask.add("javax.xml.bind.");
aoqi@0	66
aoqi@0	67	cl = new MaskingClassLoader(cl,mask);
aoqi@0	68
aoqi@0	69	URL apiUrl = cl.getResource("javax/xml/bind/JAXBPermission.class");
aoqi@0	70	if(apiUrl==null)
aoqi@0	71	throw new ClassNotFoundException("There's no JAXB 2.2 API in the classpath");
aoqi@0	72
aoqi@0	73	cl = new URLClassLoader(new URL[]{ParallelWorldClassLoader.toJarUrl(apiUrl)},cl);
aoqi@0	74	}
aoqi@0	75
aoqi@0	76	//Leave XJC2 in the publicly visible place
aoqi@0	77	// and then isolate XJC1 in a child class loader,
aoqi@0	78	// then use a MaskingClassLoader
aoqi@0	79	// so that the XJC2 classes in the parent class loader
aoqi@0	80	// won't interfere with loading XJC1 classes in a child class loader
aoqi@0	81
aoqi@0	82	if ("1.0".equals(v)) {
aoqi@0	83	if(!mustang)
aoqi@0	84	// if we haven't used Masking ClassLoader, do so now.
aoqi@0	85	cl = new MaskingClassLoader(cl,toolPackages);
aoqi@0	86	cl = new ParallelWorldClassLoader(cl,"1.0/");
aoqi@0	87	} else {
aoqi@0	88	if(mustang)
aoqi@0	89	// the whole RI needs to be loaded in a separate class loader
aoqi@0	90	cl = new ParallelWorldClassLoader(cl,"");
aoqi@0	91	}
aoqi@0	92
aoqi@0	93	return cl;
aoqi@0	94	}
aoqi@0	95
aoqi@0	96
aoqi@0	97	/**
aoqi@0	98	* The list of package prefixes we want the
aoqi@0	99	* {@link MaskingClassLoader} to prevent the parent
aoqi@0	100	* classLoader from loading
aoqi@0	101	*/
aoqi@0	102	private static String[] maskedPackages = new String[]{
aoqi@0	103	// toolPackages + alpha
aoqi@0	104	"com.sun.tools.",
aoqi@0	105	"com.sun.codemodel.internal.",
aoqi@0	106	"com.sun.relaxng.",
aoqi@0	107	"com.sun.xml.internal.xsom.",
aoqi@0	108	"com.sun.xml.internal.bind.",
aoqi@0	109	};
aoqi@0	110
aoqi@0	111	private static String[] toolPackages = new String[]{
aoqi@0	112	"com.sun.tools.",
aoqi@0	113	"com.sun.codemodel.internal.",
aoqi@0	114	"com.sun.relaxng.",
aoqi@0	115	"com.sun.xml.internal.xsom."
aoqi@0	116	};
aoqi@0	117
aoqi@0	118	/**
aoqi@0	119	* Escape hatch in case this class loader hack breaks.
aoqi@0	120	*/
aoqi@0	121	public static final boolean noHack = Boolean.getBoolean(XJCFacade.class.getName()+".nohack");
aoqi@0	122	}