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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: AttributeExpressionReadHandler.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.xmlns.parser.ParseException; 34: import org.jfree.xmlns.parser.StringReadHandler; 35: import org.jfree.xmlns.parser.XmlReadHandler; 36: import org.xml.sax.Attributes; 37: import org.xml.sax.SAXException; 38: 39: /** 40: * Creation-Date: 09.04.2006, 13:40:08 41: * 42: * @author Thomas Morgner 43: */ 44: public class AttributeExpressionReadHandler 45: extends AbstractExpressionReadHandler 46: { 47: private StringReadHandler nameReadHandler; 48: private StringReadHandler namespaceUriReadHandler; 49: private String attributeName; 50: private String namespace; 51: 52: public AttributeExpressionReadHandler() 53: { 54: } 55: 56: /** 57: * Returns the handler for a child element. 58: * 59: * @param tagName the tag name. 60: * @param atts the attributes. 61: * @return the handler or null, if the tagname is invalid. 62: * @throws SAXException if there is a parsing error. 63: */ 64: protected XmlReadHandler getHandlerForChild(final String uri, 65: final String tagName, 66: final Attributes atts) 67: throws SAXException 68: { 69: if (isSameNamespace(uri) == false) 70: { 71: return null; 72: } 73: if ("attribute-name".equals(tagName)) 74: { 75: nameReadHandler = new StringReadHandler(); 76: return nameReadHandler; 77: } 78: if ("attribute-namespace-uri".equals(tagName)) 79: { 80: namespaceUriReadHandler = new StringReadHandler(); 81: return namespaceUriReadHandler; 82: } 83: return super.getHandlerForChild(uri, tagName, atts); 84: } 85: 86: /** 87: * Done parsing. 88: * 89: * @throws SAXException if there is a parsing error. 90: */ 91: protected void doneParsing() throws SAXException 92: { 93: super.doneParsing(); 94: if (nameReadHandler == null) 95: { 96: throw new ParseException 97: ("Required element 'attribute-name' is missing.", getLocator()); 98: } 99: 100: attributeName = nameReadHandler.getResult(); 101: 102: if (namespaceUriReadHandler != null) 103: { 104: namespace = namespaceUriReadHandler.getResult(); 105: } 106: if (namespace == null) 107: { 108: namespace = getNamespace(); 109: } 110: 111: } 112: 113: public String getNamespace() 114: { 115: return namespace; 116: } 117: 118: public String getAttributeName() 119: { 120: return attributeName; 121: } 122: }