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1 /* 2 * Copyright (c) 2003 Scott Howlett & Paul Libbrecht. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. The end-user documentation included with the redistribution, 18 * if any, must include the following acknowledgment: 19 * "This product includes software developed by the Xwing 20 * Project ( http://xwing.sourceforge.net/ )." 21 * Alternately, this acknowledgment may appear in the software itself, 22 * if and wherever such third-party acknowledgments normally appear. 23 * 24 * 4. The name "Xwing" must not be used to endorse or promote products 25 * derived from this software without prior written permission. For 26 * written permission, please contact the project authors via 27 * the Xwing project site, http://xwing.sourceforge.net/ . 28 * 29 * 5. Products derived from this software may not be called "Xwing", 30 * nor may "Xwing" appear in their name, without prior written 31 * permission of the Xwing project. 32 * 33 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 34 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 35 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 36 * DISCLAIMED. IN NO EVENT SHALL THE XWING AUTHORS OR THE PROJECT 37 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 38 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 39 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 40 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 41 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 42 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 43 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 44 * SUCH DAMAGE. 45 * 46 * For more information on Xwing, please see 47 * < http://xwing.sourceforge.net/ >. 48 */ 49 package net.sourceforge.xwing.jelly.tags.dom; 50 51 import org.apache.commons.jelly.JellyTagException; 52 import org.apache.commons.jelly.MissingAttributeException; 53 import org.apache.commons.jelly.TagSupport; 54 import org.apache.commons.jelly.XMLOutput; 55 import org.jaxen.dom.DOMXPath; 56 57 public class SetTag extends TagSupport { 58 59 private String var; 60 private String select; 61 private String type; 62 private Object xmlContext; 63 64 public void setVar(String var) { 65 this.var = var; 66 } 67 68 public void setSelect(String select) { 69 this.select = select; 70 } 71 72 public void setType(String type) { 73 this.type = type; 74 } 75 76 public void setXmlContext(Object xmlContext) { 77 this.xmlContext = xmlContext; 78 } 79 80 public void doTag(XMLOutput output) 81 throws MissingAttributeException, JellyTagException { 82 83 if (var == null) { 84 throw new MissingAttributeException("var"); 85 } 86 if (xmlContext == null) { 87 throw new MissingAttributeException("xmlContext"); 88 } 89 if (select == null) { 90 throw new MissingAttributeException("select"); 91 } 92 93 try { 94 Object result = null; 95 96 if (type == null) { 97 result = new DOMXPath(select).evaluate(xmlContext); 98 } else if ("node".equals(type)) { 99 result = new DOMXPath(select).selectSingleNode(xmlContext); 100 } else if ("nodes".equals(type)) { 101 result = new DOMXPath(select).selectNodes(xmlContext); 102 } else if ("string".equals(type)) { 103 result = new DOMXPath(select).stringValueOf(xmlContext); 104 } else if ("number".equals(type)) { 105 result = new DOMXPath(select).numberValueOf(xmlContext); 106 } else if ("boolean".equals(type)) { 107 result = 108 new DOMXPath(select).booleanValueOf(xmlContext) 109 ? Boolean.TRUE 110 : Boolean.FALSE; 111 } else { 112 throw new JellyTagException( 113 "type must be null or one of " 114 + "node, nodes, string, number, boolean"); 115 } 116 117 context.setVariable(var, result); 118 } catch (JellyTagException exc) { 119 throw exc; 120 } catch (Exception exc) { 121 throw new JellyTagException(exc); 122 } 123 } 124 }

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