001: /**
002: * ========================================
003: * JFreeReport : a free Java report library
004: * ========================================
005: *
006: * Project Info: http://reporting.pentaho.org/
007: *
008: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009: *
010: * This library is free software; you can redistribute it and/or modify it under the terms
011: * of the GNU Lesser General Public License as published by the Free Software Foundation;
012: * either version 2.1 of the License, or (at your option) any later version.
013: *
014: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016: * See the GNU Lesser General Public License for more details.
017: *
018: * You should have received a copy of the GNU Lesser General Public License along with this
019: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020: * Boston, MA 02111-1307, USA.
021: *
022: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023: * in the United States and other countries.]
024: *
025: * ------------
026: * $Id: AttributeExpressionReadHandler.java 3525 2007-10-16 11:43:48Z tmorgner $
027: * ------------
028: * (C) Copyright 2000-2005, by Object Refinery Limited.
029: * (C) Copyright 2005-2007, by Pentaho Corporation.
030: */package org.jfree.report.modules.factories.report.flow;
031:
032: import org.jfree.xmlns.parser.ParseException;
033: import org.jfree.xmlns.parser.StringReadHandler;
034: import org.jfree.xmlns.parser.XmlReadHandler;
035: import org.xml.sax.Attributes;
036: import org.xml.sax.SAXException;
037:
038: /**
039: * Creation-Date: 09.04.2006, 13:40:08
040: *
041: * @author Thomas Morgner
042: */
043: public class AttributeExpressionReadHandler extends
044: AbstractExpressionReadHandler {
045: private StringReadHandler nameReadHandler;
046: private StringReadHandler namespaceUriReadHandler;
047: private String attributeName;
048: private String namespace;
049:
050: public AttributeExpressionReadHandler() {
051: }
052:
053: /**
054: * Returns the handler for a child element.
055: *
056: * @param tagName the tag name.
057: * @param atts the attributes.
058: * @return the handler or null, if the tagname is invalid.
059: * @throws SAXException if there is a parsing error.
060: */
061: protected XmlReadHandler getHandlerForChild(final String uri,
062: final String tagName, final Attributes atts)
063: throws SAXException {
064: if (isSameNamespace(uri) == false) {
065: return null;
066: }
067: if ("attribute-name".equals(tagName)) {
068: nameReadHandler = new StringReadHandler();
069: return nameReadHandler;
070: }
071: if ("attribute-namespace-uri".equals(tagName)) {
072: namespaceUriReadHandler = new StringReadHandler();
073: return namespaceUriReadHandler;
074: }
075: return super .getHandlerForChild(uri, tagName, atts);
076: }
077:
078: /**
079: * Done parsing.
080: *
081: * @throws SAXException if there is a parsing error.
082: */
083: protected void doneParsing() throws SAXException {
084: super .doneParsing();
085: if (nameReadHandler == null) {
086: throw new ParseException(
087: "Required element 'attribute-name' is missing.",
088: getLocator());
089: }
090:
091: attributeName = nameReadHandler.getResult();
092:
093: if (namespaceUriReadHandler != null) {
094: namespace = namespaceUriReadHandler.getResult();
095: }
096: if (namespace == null) {
097: namespace = getNamespace();
098: }
099:
100: }
101:
102: public String getNamespace() {
103: return namespace;
104: }
105:
106: public String getAttributeName() {
107: return attributeName;
108: }
109: }
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