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1: /* ======================================================================== 2: * JCommon : a free general purpose class library for the Java(tm) platform 3: * ======================================================================== 4: * 5: * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jcommon/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * --------------------- 28: * ObjectRefHandler.java 29: * --------------------- 30: * (C)opyright 2003, by Thomas Morgner and Contributors. 31: * 32: * Original Author: Thomas Morgner; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * $Id: ObjectRefHandler.java,v 1.3 2005/10/18 13:33:32 mungady Exp $ 36: * 37: * Changes 38: * ------- 39: * 29-Sep-2003 : Initial version (TM); 40: * 25-Nov-2003 : Updated header and Javadocs (DG); 41: * 42: */ 43: 44: package org.jfree.xml.parser.coretypes; 45: 46: import org.jfree.xml.parser.AbstractXmlReadHandler; 47: import org.xml.sax.Attributes; 48: import org.xml.sax.SAXException; 49: 50: /** 51: * A SAX handler for an object reference. 52: */ 53: public class ObjectRefHandler extends AbstractXmlReadHandler { 54: 55: /** The object. */ 56: private Object object; 57: 58: /** The property name. */ 59: private String propertyName; 60: 61: /** 62: * Creates a new handler. 63: */ 64: public ObjectRefHandler() { 65: super(); 66: } 67: 68: /** 69: * Starts parsing. 70: * 71: * @param attrs the attributes. 72: * 73: * @throws SAXException ???. 74: */ 75: protected void startParsing(final Attributes attrs) throws SAXException { 76: final String tagName = getTagName(); 77: if (tagName.equals("objectRef")) { 78: final String sourceName = attrs.getValue("source"); 79: if (sourceName == null) { 80: throw new SAXException("Source name is not defined."); 81: } 82: this.propertyName = attrs.getValue("property"); 83: if (this.propertyName == null) { 84: throw new SAXException("Property name is not defined."); 85: } 86: 87: this.object = getRootHandler().getHelperObject(sourceName); 88: if (this.object == null) { 89: throw new SAXException("Referenced object is undefined."); 90: } 91: } 92: } 93: 94: /** 95: * Returns the property name. 96: * 97: * @return the property name. 98: */ 99: public String getPropertyName() { 100: return this.propertyName; 101: } 102: 103: /** 104: * Returns the value. 105: * 106: * @return the value. 107: */ 108: public Object getObject() { 109: return this.object; 110: } 111: 112: }