| /* |
| * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package com.sun.tools.internal.xjc; |
| |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.net.URL; |
| |
| import javax.xml.validation.Schema; |
| import javax.xml.validation.SchemaFactory; |
| import javax.xml.validation.ValidatorHandler; |
| |
| import com.sun.xml.internal.bind.v2.WellKnownNamespace; |
| |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Wraps a JAXP {@link Schema} object and lazily instanciate it. |
| * |
| * Also fix bug 6246922. |
| * |
| * This object is thread-safe. There should be only one instance of |
| * this for the whole VM. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| public final class SchemaCache { |
| |
| private Schema schema; |
| |
| private final URL source; |
| |
| public SchemaCache(URL source) { |
| this.source = source; |
| } |
| |
| public ValidatorHandler newValidator() { |
| synchronized(this) { |
| if(schema==null) { |
| try { |
| schema = SchemaFactory.newInstance(WellKnownNamespace.XML_SCHEMA).newSchema(source); |
| } catch (SAXException e) { |
| // we make sure that the schema is correct before we ship. |
| throw new AssertionError(e); |
| } |
| } |
| } |
| |
| ValidatorHandler handler = schema.newValidatorHandler(); |
| fixValidatorBug6246922(handler); |
| |
| return handler; |
| } |
| |
| |
| /** |
| * Fix the bug 6246922 if we are running inside Tiger. |
| */ |
| private void fixValidatorBug6246922(ValidatorHandler handler) { |
| try { |
| Field f = handler.getClass().getDeclaredField("errorReporter"); |
| f.setAccessible(true); |
| Object errorReporter = f.get(handler); |
| |
| Method get = errorReporter.getClass().getDeclaredMethod("getMessageFormatter",String.class); |
| Object currentFormatter = get.invoke(errorReporter,"http://www.w3.org/TR/xml-schema-1"); |
| if(currentFormatter!=null) |
| return; |
| |
| // otherwise attempt to set |
| Method put = null; |
| for( Method m : errorReporter.getClass().getDeclaredMethods() ) { |
| if(m.getName().equals("putMessageFormatter")) { |
| put = m; |
| break; |
| } |
| } |
| if(put==null) return; // unable to find the putMessageFormatter |
| |
| ClassLoader cl = errorReporter.getClass().getClassLoader(); |
| String className = "com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter"; |
| Class xsformatter; |
| if(cl==null) { |
| xsformatter = Class.forName(className); |
| } else { |
| xsformatter = cl.loadClass(className); |
| } |
| |
| put.invoke(errorReporter,"http://www.w3.org/TR/xml-schema-1",xsformatter.newInstance()); |
| } catch( Throwable t ) { |
| // this code is heavily relying on an implementation detail of JAXP RI, |
| // so any error is likely because of the incompatible change in it. |
| // don't die if that happens. Just continue. The worst case is a illegible |
| // error messages, which are much better than not compiling schemas at all. |
| } |
| } |
| } |