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1 /* 2 * $Header: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/xml/ParseTag.java,v 1.10 2002/07/19 22:18:10 jstrachan Exp $ 3 * $Revision: 1.10 $ 4 * $Date: 2002/07/19 22:18:10 $ 5 * 6 * ==================================================================== 7 * 8 * The Apache Software License, Version 1.1 9 * 10 * Copyright (c) 1999-2002 The Apache Software Foundation. All rights 11 * reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * 25 * 3. The end-user documentation included with the redistribution, if 26 * any, must include the following acknowlegement: 27 * "This product includes software developed by the 28 * Apache Software Foundation (http://www.apache.org/)." 29 * Alternately, this acknowlegement may appear in the software itself, 30 * if and wherever such third-party acknowlegements normally appear. 31 * 32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software 33 * Foundation" must not be used to endorse or promote products derived 34 * from this software without prior written permission. For written 35 * permission, please contact apache@apache.org. 36 * 37 * 5. Products derived from this software may not be called "Apache" 38 * nor may "Apache" appear in their names without prior written 39 * permission of the Apache Group. 40 * 41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * ==================================================================== 54 * 55 * This software consists of voluntary contributions made by many 56 * individuals on behalf of the Apache Software Foundation. For more 57 * information on the Apache Software Foundation, please see 58 * <http://www.apache.org/>;. 59 * 60 * $Id: ParseTag.java,v 1.10 2002/07/19 22:18:10 jstrachan Exp $ 61 */ 62 package org.apache.commons.jelly.tags.xml; 63 64 import org.apache.commons.jelly.XMLOutput; 65 66 import org.apache.commons.logging.Log; 67 import org.apache.commons.logging.LogFactory; 68 69 import org.dom4j.Document; 70 import org.dom4j.io.SAXReader; 71 72 /*** A tag which parses some XML and defines a variable with the parsed Document. 73 * The XML can either be specified as its body or can be passed in via the 74 * xml property which can be a Reader, InputStream, URL or String URI. 75 * 76 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> 77 * @version $Revision: 1.10 $ 78 */ 79 public class ParseTag extends ParseTagSupport { 80 81 /*** The Log to which logging calls will be made. */ 82 private static final Log log = LogFactory.getLog(ParseTag.class); 83 84 /*** The xml to parse, either a String URI, a Reader or InputStream */ 85 private Object xml; 86 87 // Optional properties not defined in JSTL 88 /*** whether XML validation is enabled or disabled */ 89 private boolean validate; 90 91 public ParseTag() { 92 } 93 94 // Tag interface 95 //------------------------------------------------------------------------- 96 public void doTag(XMLOutput output) throws Exception { 97 if (getVar() == null) { 98 throw new IllegalArgumentException("The var attribute cannot be null"); 99 } 100 Document document = null; 101 if (xml == null) { 102 document = parseBody(output); 103 } 104 else { 105 document = parse(xml); 106 } 107 context.setVariable(getVar(), document); 108 } 109 110 // Properties 111 //------------------------------------------------------------------------- 112 /*** Sets the source of the XML which is either a String URI, Reader or InputStream */ 113 public void setXml(Object xml) { 114 this.xml = xml; 115 } 116 117 /*** @return whether XML validation is enabled or disabled */ 118 public boolean getValidate() { 119 return validate; 120 } 121 122 /*** Sets whether XML validation is enabled or disabled */ 123 public void setValidate(boolean validate) { 124 this.validate = validate; 125 } 126 127 128 // Implementation methods 129 //------------------------------------------------------------------------- 130 131 /*** 132 * Factory method to create a new SAXReader 133 */ 134 protected SAXReader createSAXReader() throws Exception { 135 return new SAXReader(validate); 136 } 137 }

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