| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.openjpa.lib.meta; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Custom non-validating SAX parser which can be used to get the version and |
| * schema location attributes from the root node. |
| * |
| * @author Jeremy Bauer |
| */ |
| public class XMLVersionParser extends XMLMetaDataParser { |
| |
| public static final String VERSION_1_0 = "1.0"; |
| public static final String VERSION_2_0 = "2.0"; |
| |
| static private final String VERSION_ATTR = "version"; |
| static private final String XSI_NS = |
| "http://www.w3.org/2001/XMLSchema-instance"; |
| static private final String SCHEMA_LOCATION = "schemaLocation"; |
| |
| private String _rootElement; |
| private String _version; |
| private String _schemaLocation; |
| |
| public XMLVersionParser(String rootElement) { |
| _rootElement = rootElement; |
| setCaching(false); |
| setValidating(false); |
| setParseText(false); |
| } |
| |
| @Override |
| protected void endElement(String name) throws SAXException { |
| |
| } |
| |
| @Override |
| protected boolean startElement(String name, Attributes attrs) |
| throws SAXException { |
| if (name.equals(_rootElement)) { |
| // save the version and schema location attributes |
| _version = attrs.getValue("", VERSION_ATTR); |
| _schemaLocation = attrs.getValue(XSI_NS, SCHEMA_LOCATION); |
| // ignore remaining content |
| ignoreContent(true); |
| } |
| return false; |
| } |
| |
| /** |
| * Get the string value of the version attribute on the root element |
| * @return doc version |
| */ |
| public String getVersion() { |
| return _version; |
| } |
| |
| /** |
| * Get the string value of the schema location attribute on the root element |
| * @return doc schema location |
| */ |
| public String getSchemaLocation() { |
| return _schemaLocation; |
| } |
| } |