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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: * GenericWriteHandler.java 29: * ------------------------ 30: * (C)opyright 2003-2005, by Thomas Morgner and Contributors. 31: * 32: * Original Author: Thomas Morgner; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * $Id: GenericWriteHandler.java,v 1.6 2005/11/16 15:58:41 taqua Exp $ 36: * 37: * Changes 38: * ------- 39: * 23-Sep-2003 : Initial version (TM); 40: * 23-Dec-2003 : Added missing Javadocs (DG); 41: * 42: */ 43: 44: package org.jfree.xml.writer.coretypes; 45: 46: import java.io.IOException; 47: import java.util.ArrayList; 48: 49: import org.jfree.util.Log; 50: import org.jfree.xml.util.AttributeDefinition; 51: import org.jfree.xml.util.GenericObjectFactory; 52: import org.jfree.xml.util.ObjectDescriptionException; 53: import org.jfree.xml.util.PropertyDefinition; 54: import org.jfree.xml.writer.AbstractXmlWriteHandler; 55: import org.jfree.xml.writer.AttributeList; 56: import org.jfree.xml.writer.RootXmlWriteHandler; 57: import org.jfree.xml.writer.XMLWriter; 58: import org.jfree.xml.writer.XMLWriterException; 59: 60: /** 61: * A handler for writing generic objects. 62: */ 63: public class GenericWriteHandler extends AbstractXmlWriteHandler { 64: 65: private GenericObjectFactory factory; 66: 67: /** 68: * Creates a new handler. 69: * 70: * @param factory the object factory. 71: */ 72: public GenericWriteHandler(final GenericObjectFactory factory) { 73: this.factory = factory; 74: } 75: 76: /** 77: * Performs the writing of a generic object. 78: * 79: * @param tagName the tag name. 80: * @param object the generic object. 81: * @param writer the writer. 82: * @param mPlexAttribute ??. 83: * @param mPlexValue ??. 84: * 85: * @throws IOException if there is an I/O error. 86: * @throws XMLWriterException if there is a writer error. 87: */ 88: public void write(final String tagName, final Object object, final XMLWriter writer, 89: final String mPlexAttribute, final String mPlexValue) 90: throws IOException, XMLWriterException { 91: 92: try { 93: this.factory.readProperties(object); 94: 95: final AttributeList attributes = new AttributeList(); 96: if (mPlexAttribute != null) { 97: attributes.setAttribute(mPlexAttribute, mPlexValue); 98: } 99: final AttributeDefinition[] attribDefs = this.factory.getAttributeDefinitions(); 100: final ArrayList properties = new ArrayList(); 101: for (int i = 0; i < attribDefs.length; i++) { 102: final AttributeDefinition adef = attribDefs[i]; 103: final String pName = adef.getAttributeName(); 104: final Object propValue = this.factory.getProperty(adef.getPropertyName()); 105: if (propValue != null) { 106: Log.debug( 107: "Here: " + this.factory.getBaseClass() + " -> " + adef.getPropertyName() 108: ); 109: final String value = adef.getHandler().toAttributeValue(propValue); 110: if (value != null) { 111: attributes.setAttribute(pName, value); 112: } 113: } 114: properties.add(adef.getPropertyName()); 115: } 116: writer.writeTag(tagName, attributes, false); 117: writer.startBlock(); 118: 119: final PropertyDefinition[] propertyDefs = this.factory.getPropertyDefinitions(); 120: final RootXmlWriteHandler rootHandler = getRootHandler(); 121: for (int i = 0; i < propertyDefs.length; i++) { 122: final PropertyDefinition pDef = propertyDefs[i]; 123: final String elementName = pDef.getElementName(); 124: rootHandler.write 125: (elementName, this.factory.getProperty(pDef.getPropertyName()), 126: this.factory.getTypeForTagName(elementName), writer); 127: } 128: writer.endBlock(); 129: writer.writeCloseTag(tagName); 130: } 131: catch (ObjectDescriptionException ode) { 132: Log.warn ("Unable to write element", ode); 133: throw new IOException(ode.getMessage()); 134: } 135: } 136: 137: }