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
021package org.granite.tide.spring;
022
023import org.springframework.beans.factory.config.BeanDefinition;
024import org.springframework.beans.factory.support.BeanDefinitionBuilder;
025import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
026import org.springframework.beans.factory.xml.ParserContext;
027import org.springframework.core.Conventions;
028import org.springframework.util.StringUtils;
029import org.w3c.dom.Element;
030
031/**
032 * @author William Drai
033 */
034public class TideIdentityBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {
035
036    @Override
037    protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
038        
039        element.setAttribute(ID_ATTRIBUTE, "identity");
040        
041        builder.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
042        
043        String aclService = element.getAttribute("acl-service");
044        if (aclService != null && aclService.trim().length() > 0)
045                builder.addPropertyReference("aclService", aclService);
046        
047        String sidRetrievalStrategy = element.getAttribute("sid-retrieval-strategy");
048        if (sidRetrievalStrategy != null && sidRetrievalStrategy.trim().length() > 0)
049                builder.addPropertyReference("sidRetrievalStrategy", sidRetrievalStrategy);
050        
051        String objectIdentityRetrievalStrategy = element.getAttribute("object-identity-retrieval-strategy");
052        if (objectIdentityRetrievalStrategy != null && objectIdentityRetrievalStrategy.trim().length() > 0)
053                builder.addPropertyReference("objectIdentityRetrievalStrategy", objectIdentityRetrievalStrategy);
054    }
055
056    @Override
057    protected String getBeanClassName(Element element) {
058        // Determine Spring Security version
059        boolean spring3 = false;
060        try {
061                getClass().getClassLoader().loadClass("org.springframework.security.access.AccessDeniedException");
062                spring3 = true;
063        }
064        catch (ClassNotFoundException e) {
065                // Assume Spring 2
066        }
067        
068        String aclService = element.getAttribute("acl-service");
069        return "org.granite.tide.spring.security." 
070                + (aclService != null && aclService.trim().length() > 0 ? "AclIdentity" : "Identity") 
071                + (spring3 ? "3" : "");
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}