001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.spring;
022    
023    import java.util.List;
024    
025    import org.springframework.beans.factory.support.BeanDefinitionBuilder;
026    import org.springframework.beans.factory.support.ManagedList;
027    import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
028    import org.springframework.beans.factory.xml.ParserContext;
029    import org.springframework.core.Conventions;
030    import org.springframework.util.StringUtils;
031    import org.springframework.util.xml.DomUtils;
032    import org.w3c.dom.Element;
033    
034    /**
035     * @author William Drai
036     */
037    public class MessagingDestinationBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
038    
039        @Override
040        protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
041            builder.setLazyInit(false);
042            
043            mapOptionalAttributes(element, parserContext, builder, "id", "no-local", "session-selector");
044            
045            Object sourceElement = parserContext.extractSource(element);
046            ManagedList<String> roles = new ManagedList<String>();
047            roles.setSource(sourceElement);
048            List<Element> rolesElements = DomUtils.getChildElementsByTagName(element, "roles");
049            for (Element rolesElement : rolesElements) {
050                List<Element> valueElements = DomUtils.getChildElementsByTagName(rolesElement, "role");
051                for (Element valueElement : valueElements)
052                    roles.add(valueElement.getTextContent());
053            }
054            if (!roles.isEmpty())
055                    builder.addPropertyValue("roles", roles);        
056        }
057    
058        @Override
059        protected String getBeanClassName(Element element) {
060            return "org.granite.spring.MessagingDestination";
061        }
062    
063        static void mapOptionalAttributes(Element element, ParserContext parserContext, BeanDefinitionBuilder builder, String... attrs) {
064            for (String attr : attrs) {
065                String value = element.getAttribute(attr);
066                if (StringUtils.hasText(value)) {
067                    String propertyName = Conventions.attributeNameToPropertyName(attr);
068                    if (validateProperty(element, parserContext, propertyName, attr)) {
069                        builder.addPropertyValue(propertyName, value);
070                    }
071                }
072            }
073        }
074    
075        private static boolean validateProperty(Element element, ParserContext parserContext, String propertyName, String attr) {
076            if (!StringUtils.hasText(propertyName)) {
077                parserContext.getReaderContext().error(
078                    "Illegal property name trying to convert from attribute '" + attr + "' : cannot be null or empty.",
079                    parserContext.extractSource(element));
080                return false;
081            }
082            return true;
083        }
084    }