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1: /** 2: * ======================================== 3: * JFreeReport : a free Java report library 4: * ======================================== 5: * 6: * Project Info: http://reporting.pentaho.org/ 7: * 8: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * ------------ 26: * $Id: ContentElementReadHandler.java 3525 2007-10-16 11:43:48Z tmorgner $ 27: * ------------ 28: * (C) Copyright 2000-2005, by Object Refinery Limited. 29: * (C) Copyright 2005-2007, by Pentaho Corporation. 30: */ 31: package org.jfree.report.modules.factories.report.flow; 32: 33: import org.jfree.report.structure.ContentElement; 34: import org.jfree.report.structure.Element; 35: import org.jfree.xmlns.parser.XmlReadHandler; 36: import org.jfree.xmlns.parser.ParseException; 37: import org.xml.sax.Attributes; 38: import org.xml.sax.SAXException; 39: 40: /** 41: * Creation-Date: 09.04.2006, 14:38:32 42: * 43: * @author Thomas Morgner 44: */ 45: public class ContentElementReadHandler extends AbstractElementReadHandler 46: { 47: private ValueExpressionReadHandler valueExpressionReadHandler; 48: private ContentElement ce; 49: 50: public ContentElementReadHandler() 51: { 52: ce = new ContentElement(); 53: } 54: 55: /** 56: * Starts parsing. 57: * 58: * @param attrs the attributes. 59: * @throws org.xml.sax.SAXException if there is a parsing error. 60: */ 61: protected void startParsing(final Attributes attrs) throws SAXException 62: { 63: super.startParsing(attrs); 64: final String format = attrs.getValue(FlowReportFactoryModule.NAMESPACE, "format"); 65: ce.setAttribute(FlowReportFactoryModule.NAMESPACE, "format", format); 66: } 67: 68: /** 69: * Returns the handler for a child element. 70: * 71: * @param tagName the tag name. 72: * @param atts the attributes. 73: * @return the handler or null, if the tagname is invalid. 74: * @throws SAXException if there is a parsing error. 75: */ 76: protected XmlReadHandler getHandlerForChild(final String uri, 77: final String tagName, 78: final Attributes atts) 79: throws SAXException 80: { 81: if (isSameNamespace(uri) == false) 82: { 83: return null; 84: } 85: if ("value-expression".equals(tagName)) 86: { 87: valueExpressionReadHandler = new ValueExpressionReadHandler(); 88: return valueExpressionReadHandler; 89: } 90: return super.getHandlerForChild(uri, tagName, atts); 91: } 92: 93: /** 94: * Done parsing. 95: * 96: * @throws SAXException if there is a parsing error. 97: */ 98: protected void doneParsing() throws SAXException 99: { 100: if (valueExpressionReadHandler == null) 101: { 102: throw new ParseException("No valid value expression.", getLocator()); 103: } 104: 105: super.doneParsing(); 106: configureElement(ce); 107: ce.setValueExpression(valueExpressionReadHandler.getExpression()); 108: } 109: 110: /** 111: * Returns the object for this element or null, if this element does not 112: * create an object. 113: * 114: * @return the object. 115: * @throws SAXException if there's a parsing error 116: */ 117: public Object getObject() throws SAXException 118: { 119: return ce; 120: } 121: 122: protected Element getElement() 123: { 124: return ce; 125: } 126: }