001    /**
002     *   GRANITE DATA SERVICES
003     *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004     *
005     *   This file is part of the Granite Data Services Platform.
006     *
007     *   Granite Data Services is free software; you can redistribute it and/or
008     *   modify it under the terms of the GNU Lesser General Public
009     *   License as published by the Free Software Foundation; either
010     *   version 2.1 of the License, or (at your option) any later version.
011     *
012     *   Granite Data Services is distributed in the hope that it will be useful,
013     *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014     *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015     *   General Public License for more details.
016     *
017     *   You should have received a copy of the GNU Lesser General Public
018     *   License along with this library; if not, write to the Free Software
019     *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020     *   USA, or see <http://www.gnu.org/licenses/>.
021     */
022    package org.granite.spring;
023    
024    import java.util.List;
025    
026    import org.springframework.beans.factory.support.BeanDefinitionBuilder;
027    import org.springframework.beans.factory.support.ManagedList;
028    import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
029    import org.springframework.beans.factory.xml.ParserContext;
030    import org.springframework.core.Conventions;
031    import org.springframework.util.StringUtils;
032    import org.springframework.util.xml.DomUtils;
033    import org.w3c.dom.Element;
034    
035    /**
036     * @author William Drai
037     */
038    public class RemoteDestinationBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
039    
040        @Override
041        protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {        
042            builder.setLazyInit(false);
043    
044            String source = element.getAttribute("source");
045            
046            // Set the default ID if necessary
047            if (!StringUtils.hasText(element.getAttribute(ID_ATTRIBUTE)) && source != null)
048                element.setAttribute(ID_ATTRIBUTE, source + "_remoteDestination");
049            
050            mapOptionalAttributes(element, parserContext, builder, "id", "source");
051            
052            String securizerRef = element.getAttribute("securizer");
053            if (StringUtils.hasText(securizerRef))
054                    builder.addPropertyReference("securizer", securizerRef);
055            
056            Object sourceElement = parserContext.extractSource(element);
057            ManagedList<String> roles = new ManagedList<String>();
058            roles.setSource(sourceElement);
059            List<Element> rolesElements = DomUtils.getChildElementsByTagName(element, "roles");
060            for (Element rolesElement : rolesElements) {
061                List<Element> valueElements = DomUtils.getChildElementsByTagName(rolesElement, "role");
062                for (Element valueElement : valueElements)
063                    roles.add(valueElement.getTextContent());
064            }
065            if (!roles.isEmpty())
066                    builder.addPropertyValue("roles", roles);        
067        }
068    
069        @Override
070        protected String getBeanClassName(Element element) {
071            return "org.granite.spring.RemoteDestination";
072        }
073    
074        static void mapOptionalAttributes(Element element, ParserContext parserContext, BeanDefinitionBuilder builder, String... attrs) {
075            for (String attr : attrs) {
076                String value = element.getAttribute(attr);
077                if (StringUtils.hasText(value)) {
078                    String propertyName = Conventions.attributeNameToPropertyName(attr);
079                    if (validateProperty(element, parserContext, propertyName, attr)) {
080                        builder.addPropertyValue(propertyName, value);
081                    }
082                }
083            }
084        }
085    
086        private static boolean validateProperty(Element element, ParserContext parserContext, String propertyName, String attr) {
087            if (!StringUtils.hasText(propertyName)) {
088                parserContext.getReaderContext().error(
089                    "Illegal property name trying to convert from attribute '" + attr + "' : cannot be null or empty.",
090                    parserContext.extractSource(element));
091                return false;
092            }
093            return true;
094        }
095    }