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Glassfish example source code file (CatalinaDigester.java)
The Glassfish CatalinaDigester.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. * * * This file incorporates work covered by the following copyright and * permission notice: * * Copyright 2004 The Apache Software Foundation * * Licensed 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.catalina.util; import com.sun.grizzly.util.IntrospectionUtils; import org.apache.tomcat.util.digester.Digester; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.AttributesImpl; /** * This extended digester filters out ${...} tokens to replace them with * matching system properties. * * @author Simon Kitching * @author Remy Maucherat */ public class CatalinaDigester extends Digester { // ---------------------------------------------------------- Static Fields private static class SystemPropertySource implements IntrospectionUtils.PropertySource { public String getProperty( String key ) { return System.getProperty(key); } } protected static IntrospectionUtils.PropertySource source[] = new IntrospectionUtils.PropertySource[] { new SystemPropertySource() }; // ---------------------------------------------------------------- Methods /** * Invoke inherited implementation after applying variable * substitution to any attribute values containing variable * references. */ public void startElement(String namespaceURI, String localName, String qName, Attributes list) throws SAXException { list = updateAttributes(list); super.startElement(namespaceURI, localName, qName, list); } /** * Invoke inherited implementation after applying variable substitution * to the character data contained in the current element. */ public void endElement(String namespaceURI, String localName, String qName) throws SAXException { bodyText = updateBodyText(bodyText); super.endElement(namespaceURI, localName, qName); } /** * Returns an attributes list which contains all the attributes * passed in, with any text of form "${xxx}" in an attribute value * replaced by the appropriate value from the system property. */ private Attributes updateAttributes(Attributes list) { if (list.getLength() == 0) { return list; } AttributesImpl newAttrs = new AttributesImpl(list); int nAttributes = newAttrs.getLength(); for (int i = 0; i < nAttributes; ++i) { String value = newAttrs.getValue(i); try { String newValue = IntrospectionUtils.replaceProperties(value, null, source); if (value != newValue) { newAttrs.setValue(i, newValue); } } catch (Exception e) { // ignore - let the attribute have its original value } } return newAttrs; } /** * Return a new StringBuilder containing the same contents as the * input buffer, except that data of form ${varname} have been * replaced by the value of that var as defined in the system property. */ private StringBuilder updateBodyText(StringBuilder bodyText) { String in = bodyText.toString(); String out; try { out = IntrospectionUtils.replaceProperties(in, null, source); } catch(Exception e) { return bodyText; // return unchanged data } if (in.equals(out)) { // No substitutions required. Don't waste memory creating // a new buffer return bodyText; } else { return new StringBuilder(out); } } } Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish CatalinaDigester.java source code file: |
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