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

Tue, 09 Apr 2013 14:51:13 +0100

author
alanb
date
Tue, 09 Apr 2013 14:51:13 +0100
changeset 368
0989ad8c0860
parent 286
f50545b5e2f1
child 637
9c07ef4934dd
permissions
-rw-r--r--

8010393: Update JAX-WS RI to 2.2.9-b12941
Reviewed-by: alanb, erikj
Contributed-by: miroslav.kos@oracle.com, martin.grebac@oracle.com

ohair@286 1 /*
alanb@368 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286 4 *
ohair@286 5 * This code is free software; you can redistribute it and/or modify it
ohair@286 6 * under the terms of the GNU General Public License version 2 only, as
ohair@286 7 * published by the Free Software Foundation. Oracle designates this
ohair@286 8 * particular file as subject to the "Classpath" exception as provided
ohair@286 9 * by Oracle in the LICENSE file that accompanied this code.
ohair@286 10 *
ohair@286 11 * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ohair@286 14 * version 2 for more details (a copy is included in the LICENSE file that
ohair@286 15 * accompanied this code).
ohair@286 16 *
ohair@286 17 * You should have received a copy of the GNU General Public License version
ohair@286 18 * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286 20 *
ohair@286 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286 22 * or visit www.oracle.com if you need additional information or have any
ohair@286 23 * questions.
ohair@286 24 */
ohair@286 25
ohair@286 26 package com.sun.tools.internal.xjc;
ohair@286 27
ohair@286 28 import java.net.MalformedURLException;
ohair@286 29 import java.net.URL;
ohair@286 30 import java.net.URLClassLoader;
ohair@286 31 import java.util.ArrayList;
ohair@286 32 import java.util.Arrays;
ohair@286 33 import java.util.List;
ohair@286 34
ohair@286 35 import javax.xml.bind.JAXBContext;
ohair@286 36
ohair@286 37 import com.sun.istack.internal.tools.MaskingClassLoader;
ohair@286 38 import com.sun.istack.internal.tools.ParallelWorldClassLoader;
ohair@286 39
ohair@286 40 /**
ohair@286 41 * Creates a class loader configured to run XJC 1.0/2.0 safely without
ohair@286 42 * interference with JAXB 2.0 API in Mustang.
ohair@286 43 *
ohair@286 44 * @author Kohsuke Kawaguchi
ohair@286 45 */
ohair@286 46 class ClassLoaderBuilder {
ohair@286 47
ohair@286 48 /**
ohair@286 49 * Creates a new class loader that eventually delegates to the given {@link ClassLoader}
ohair@286 50 * such that XJC can be loaded by using this classloader.
ohair@286 51 *
ohair@286 52 * @param v
ohair@286 53 * Either "1.0" or "2.0", indicating the version of the -source value.
ohair@286 54 */
ohair@286 55 protected static ClassLoader createProtectiveClassLoader(ClassLoader cl, String v) throws ClassNotFoundException, MalformedURLException {
ohair@286 56 if(noHack) return cl; // provide an escape hatch
ohair@286 57
ohair@286 58 boolean mustang = false;
ohair@286 59
ohair@286 60 if (SecureLoader.getClassClassLoader(JAXBContext.class) == null) {
ohair@286 61 // JAXB API is loaded from the bootstrap. We need to override one with ours
ohair@286 62 mustang = true;
ohair@286 63
alanb@368 64 List<String> mask = new ArrayList<String>(Arrays.asList(maskedPackages));
ohair@286 65 mask.add("javax.xml.bind.");
ohair@286 66
ohair@286 67 cl = new MaskingClassLoader(cl,mask);
ohair@286 68
ohair@286 69 URL apiUrl = cl.getResource("javax/xml/bind/JAXBPermission.class");
ohair@286 70 if(apiUrl==null)
ohair@286 71 throw new ClassNotFoundException("There's no JAXB 2.2 API in the classpath");
ohair@286 72
ohair@286 73 cl = new URLClassLoader(new URL[]{ParallelWorldClassLoader.toJarUrl(apiUrl)},cl);
ohair@286 74 }
ohair@286 75
ohair@286 76 //Leave XJC2 in the publicly visible place
ohair@286 77 // and then isolate XJC1 in a child class loader,
ohair@286 78 // then use a MaskingClassLoader
ohair@286 79 // so that the XJC2 classes in the parent class loader
ohair@286 80 // won't interfere with loading XJC1 classes in a child class loader
ohair@286 81
alanb@368 82 if ("1.0".equals(v)) {
ohair@286 83 if(!mustang)
ohair@286 84 // if we haven't used Masking ClassLoader, do so now.
ohair@286 85 cl = new MaskingClassLoader(cl,toolPackages);
ohair@286 86 cl = new ParallelWorldClassLoader(cl,"1.0/");
ohair@286 87 } else {
ohair@286 88 if(mustang)
ohair@286 89 // the whole RI needs to be loaded in a separate class loader
ohair@286 90 cl = new ParallelWorldClassLoader(cl,"");
ohair@286 91 }
ohair@286 92
ohair@286 93 return cl;
ohair@286 94 }
ohair@286 95
ohair@286 96
ohair@286 97 /**
ohair@286 98 * The list of package prefixes we want the
ohair@286 99 * {@link MaskingClassLoader} to prevent the parent
ohair@286 100 * classLoader from loading
ohair@286 101 */
ohair@286 102 private static String[] maskedPackages = new String[]{
ohair@286 103 // toolPackages + alpha
ohair@286 104 "com.sun.tools.",
ohair@286 105 "com.sun.codemodel.internal.",
ohair@286 106 "com.sun.relaxng.",
ohair@286 107 "com.sun.xml.internal.xsom.",
ohair@286 108 "com.sun.xml.internal.bind.",
ohair@286 109 };
ohair@286 110
ohair@286 111 private static String[] toolPackages = new String[]{
ohair@286 112 "com.sun.tools.",
ohair@286 113 "com.sun.codemodel.internal.",
ohair@286 114 "com.sun.relaxng.",
ohair@286 115 "com.sun.xml.internal.xsom."
ohair@286 116 };
ohair@286 117
ohair@286 118 /**
ohair@286 119 * Escape hatch in case this class loader hack breaks.
ohair@286 120 */
ohair@286 121 public static final boolean noHack = Boolean.getBoolean(XJCFacade.class.getName()+".nohack");
ohair@286 122 }

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