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1 /* 2 * $Header: $ 3 * $Revision: 1.0 $ 4 * $Date: $ 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: $ 61 */ 62 package org.apache.commons.jelly.tags.dynabean; 63 64 import java.io.IOException; 65 import java.io.Writer; 66 import java.util.ArrayList; 67 import java.util.Iterator; 68 import java.util.List; 69 70 import org.apache.commons.jelly.JellyContext; 71 import org.apache.commons.jelly.Script; 72 import org.apache.commons.jelly.Tag; 73 import org.apache.commons.jelly.TagSupport; 74 import org.apache.commons.jelly.XMLOutput; 75 import org.apache.commons.jelly.impl.ScriptBlock; 76 import org.apache.commons.jelly.impl.TagScript; 77 import org.apache.commons.jelly.expression.Expression; 78 79 import org.apache.commons.jelly.JellyException; 80 import org.apache.commons.jelly.MissingAttributeException; 81 82 import org.apache.commons.beanutils.*; 83 84 /*** 85 * A tag which creates and defines and creates a DynaClass 86 * The DynaClass object is placed by name in the context, 87 * so that a DynaBean tag can use it by name to instantiate 88 * a DynaBean object 89 * 90 * @author Theo Niemeijer 91 * @version 1.0 92 */ 93 public class DynaclassTag extends TagSupport { 94 95 private ArrayList propList = new ArrayList(); 96 private DynaProperty[] props = null; 97 private DynaClass dynaClass = null; 98 99 private String name; 100 private String var; 101 102 public DynaclassTag() { 103 } 104 105 // Tag interface 106 //------------------------------------------------------------------------- 107 public void doTag(XMLOutput output) throws Exception { 108 109 if (name == null) { 110 throw new MissingAttributeException("name"); 111 } 112 113 if (var == null) { 114 var = name; 115 } 116 117 // Evaluate the body of the dynaclass definition 118 invokeBody(output); 119 120 // Convert the list of properties into array 121 props = 122 (DynaProperty[]) propList.toArray( 123 new DynaProperty[propList.size()]); 124 125 if (props == null) { 126 throw new JellyException("No properties list"); 127 } 128 129 if (props.length == 0) { 130 throw new JellyException("No properties"); 131 } 132 133 // Create the dynaclass with name and properties 134 dynaClass = (DynaClass) new BasicDynaClass(name, null, props); 135 136 // Place new dynaclass in context 137 context.setVariable(getVar(), dynaClass); 138 } 139 140 // Properties 141 //------------------------------------------------------------------------- 142 143 /*** 144 * Sets the name of the new DynaClass 145 */ 146 public void setName(String name) { 147 this.name = name; 148 } 149 150 public String getVar() { 151 return var; 152 } 153 154 /*** 155 * Sets the name of the variable to export the DynaClass instance 156 */ 157 public void setVar(String var) { 158 this.var = var; 159 } 160 161 protected void addDynaProperty(DynaProperty prop) { 162 propList.add(prop); 163 } 164 }

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