Thu, 31 Aug 2017 15:18:52 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2013, 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.URL; |
aoqi@0 | 29 | |
aoqi@0 | 30 | import javax.xml.validation.Schema; |
aoqi@0 | 31 | import javax.xml.validation.SchemaFactory; |
aoqi@0 | 32 | import javax.xml.validation.ValidatorHandler; |
aoqi@0 | 33 | |
aoqi@0 | 34 | import com.sun.xml.internal.bind.v2.util.XmlFactory; |
aoqi@0 | 35 | import javax.xml.XMLConstants; |
aoqi@0 | 36 | import org.xml.sax.SAXException; |
aoqi@0 | 37 | |
aoqi@0 | 38 | import static com.sun.xml.internal.bind.v2.util.XmlFactory.allowExternalAccess; |
aoqi@0 | 39 | |
aoqi@0 | 40 | /** |
aoqi@0 | 41 | * Wraps a JAXP {@link Schema} object and lazily instantiate it. |
aoqi@0 | 42 | * |
aoqi@0 | 43 | * This object is thread-safe. There should be only one instance of |
aoqi@0 | 44 | * this for the whole VM. |
aoqi@0 | 45 | * |
aoqi@0 | 46 | * @author Kohsuke Kawaguchi |
aoqi@0 | 47 | */ |
aoqi@0 | 48 | public final class SchemaCache { |
aoqi@0 | 49 | |
aoqi@0 | 50 | private Schema schema; |
aoqi@0 | 51 | |
aoqi@0 | 52 | private final URL source; |
aoqi@0 | 53 | |
aoqi@0 | 54 | public SchemaCache(URL source) { |
aoqi@0 | 55 | this.source = source; |
aoqi@0 | 56 | } |
aoqi@0 | 57 | |
aoqi@0 | 58 | public ValidatorHandler newValidator() { |
aoqi@0 | 59 | synchronized(this) { |
aoqi@0 | 60 | if(schema==null) { |
aoqi@0 | 61 | try { |
aoqi@0 | 62 | // do not disable secure processing - these are well-known schemas |
aoqi@0 | 63 | SchemaFactory sf = XmlFactory.createSchemaFactory(XMLConstants.W3C_XML_SCHEMA_NS_URI, false); |
aoqi@0 | 64 | schema = allowExternalAccess(sf, "file", false).newSchema(source); |
aoqi@0 | 65 | } catch (SAXException e) { |
aoqi@0 | 66 | // we make sure that the schema is correct before we ship. |
aoqi@0 | 67 | throw new AssertionError(e); |
aoqi@0 | 68 | } |
aoqi@0 | 69 | } |
aoqi@0 | 70 | } |
aoqi@0 | 71 | |
aoqi@0 | 72 | ValidatorHandler handler = schema.newValidatorHandler(); |
aoqi@0 | 73 | return handler; |
aoqi@0 | 74 | } |
aoqi@0 | 75 | |
aoqi@0 | 76 | } |