dleslie 00/09/19 12:41:23
Added: java/samples/ApplyXPath ApplyXPath.java foo.xml readme.html Log: ApplyXPath ported from Xalan-Java 1. Revision Changes Path 1.1 xml-xalan/java/samples/ApplyXPath/ApplyXPath.java Index: ApplyXPath.java =================================================================== /* * The Apache Software License, Version 1.1 * * * Copyright (c) 1999 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Xalan" and "Apache Software Foundation" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache", * nor may "Apache" appear in their name, without prior written * permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation and was * originally based on software copyright (c) 1999, Lotus * Development Corporation., http://www.lotus.com. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ // This file uses 4 space indents, no tabs. import java.io.FileInputStream; import java.io.FileNotFoundException; import org.apache.xerces.parsers.DOMParser; import org.apache.xpath.XPathAPI; //import org.apache.xpath.xml.FormatterToXML; import org.apache.xalan.utils.TreeWalker; import org.apache.xalan.utils.DOMBuilder; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.DocumentFragment; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.w3c.dom.traversal.NodeIterator; //import org.w3c.dom.NodeList; import org.xml.sax.SAXException; import org.xml.sax.InputSource; // Imported JAVA API for XML Parsing 1.0 classes import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; // Imported Serializer classes import org.apache.xml.serialize.OutputFormat; import org.apache.xml.serialize.Serializer; import org.apache.xml.serialize.SerializerFactory; import org.apache.xml.serialize.XMLSerializer; import org.apache.xml.serialize.TextSerializer; /** * Very basic utility for applying an XPath epxression to an xml file and printing information / about the execution of the XPath object and the nodes it finds. * Takes 2 arguments: * (1) an xml filename * (2) an XPath expression to apply to the file * Examples: * java ApplyXPath foo.xml / * java ApplyXPath foo.xml /doc/name[1]/@last * @see XPathAPI */ public class ApplyXPath { protected String filename = null; protected String xpath = null; /** Process input args and execute the XPath. */ public void doMain(String[] args) { filename = args[0]; xpath = args[1]; if ((filename != null) && (filename.length() > 0) && (xpath != null) && (xpath.length() > 0)) { InputSource in; try { in = new InputSource(new FileInputStream(filename)); } catch (FileNotFoundException fnf) { System.err.println("FileInputStream of " + filename + " threw: " + fnf.toString()); fnf.printStackTrace(); return; } Document doc = null; Element root = null; try { DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance(); DocumentBuilder docBuilder = dfactory.newDocumentBuilder(); doc = docBuilder.parse(in); root = doc.getDocumentElement(); } catch (ParserConfigurationException pce) { pce.printStackTrace(); } catch(Exception e1) { System.err.println("Parsing " + filename + " threw: " + e1.toString()); e1.printStackTrace(); return; } NodeIterator nl = null; try { // Use the simple XPath API to select a nodeIterator. nl = XPathAPI.selectNodeList(doc, xpath); } catch (Exception e2) { System.err.println("selectNodeList threw: " + e2.toString() + " perhaps your xpath didn't select any nodes"); e2.printStackTrace(); return; } Node n = null; try { while ((n = nl.nextNode())!= null) { if (n.getNodeValue() == null) System.out.println(n.getNodeName()); else System.out.println(n.getNodeName()+ " -- " + n.getNodeValue()); // XMLSerializer does not work. //TreeWalker tw = new TreeWalker(new XMLSerializer(System.out, new OutputFormat())); //tw.traverse(n); } } catch (Exception e3) { e3.printStackTrace(); return; } } else { System.out.println("Bad input args: " + filename + ", " + xpath); } } /** Main method to run from the command line. */ public static void main (String[] args) { if (args.length != 2) { System.out.println("java ApplyXPath filename.xml xpath\n" + "Reads filename.xml and applies the xpath; prints the nodelist found."); return; } ApplyXPath app = new ApplyXPath(); System.out.println("<output>"); app.doMain(args); System.out.println("</output>"); } } // end of class ApplyXPath 1.1 xml-xalan/java/samples/ApplyXPath/foo.xml Index: foo.xml =================================================================== <?xml version="1.0"?> <doc> <name first="David" last="Marston"/> <name first="David" last="Bertoni"/> <name first="Donald" last="Leslie"/> <name first="Emily" last="Farmer"/> <name first="Joseph" last="Kesselman"/> <name first="Myriam" last="Midy"/> <name first="Paul" last="Dick"/> <name first="Stephen" last="Auriemma"/> <name first="Scott" last="Boag"/> <name first="Shane" last="Curcuru"/> </doc> 1.1 xml-xalan/java/samples/ApplyXPath/readme.html Index: readme.html =================================================================== <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>Xalan Samples</title> </head> <body> <h2>Xalan Samples</h2> <p>For information about the samples (what they illustrate and how to run them), see <a href="../../docs/samples.html">Samples</a>.</p> </body> </html>
