RemoteDestinationBeanDefinitionParser.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   Granite Data Services is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
 *   General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
package org.granite.spring;

import java.util.List;

import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.ManagedList;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.core.Conventions;
import org.springframework.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.w3c.dom.Element;

/**
 * @author William Drai
 */
public class RemoteDestinationBeanDefinitionParser extends AbstractSingleBeanDefinitionParser {

    @Override
    protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {        
    	builder.setLazyInit(false);

    	String source = element.getAttribute("source");
    	
        // Set the default ID if necessary
        if (!StringUtils.hasText(element.getAttribute(ID_ATTRIBUTE)) && source != null)
            element.setAttribute(ID_ATTRIBUTE, source + "_remoteDestination");
    	
        mapOptionalAttributes(element, parserContext, builder, "id", "source");
        
        String securizerRef = element.getAttribute("securizer");
        if (StringUtils.hasText(securizerRef))
        	builder.addPropertyReference("securizer", securizerRef);
        
        Object sourceElement = parserContext.extractSource(element);
        ManagedList<String> roles = new ManagedList<String>();
        roles.setSource(sourceElement);
        List<Element> rolesElements = DomUtils.getChildElementsByTagName(element, "roles");
        for (Element rolesElement : rolesElements) {
            List<Element> valueElements = DomUtils.getChildElementsByTagName(rolesElement, "role");
            for (Element valueElement : valueElements)
            	roles.add(valueElement.getTextContent());
        }
        if (!roles.isEmpty())
        	builder.addPropertyValue("roles", roles);        
    }

    @Override
    protected String getBeanClassName(Element element) {
        return "org.granite.spring.RemoteDestination";
    }

    static void mapOptionalAttributes(Element element, ParserContext parserContext, BeanDefinitionBuilder builder, String... attrs) {
        for (String attr : attrs) {
            String value = element.getAttribute(attr);
            if (StringUtils.hasText(value)) {
                String propertyName = Conventions.attributeNameToPropertyName(attr);
                if (validateProperty(element, parserContext, propertyName, attr)) {
                    builder.addPropertyValue(propertyName, value);
                }
            }
        }
    }

    private static boolean validateProperty(Element element, ParserContext parserContext, String propertyName, String attr) {
        if (!StringUtils.hasText(propertyName)) {
            parserContext.getReaderContext().error(
                "Illegal property name trying to convert from attribute '" + attr + "' : cannot be null or empty.",
                parserContext.extractSource(element));
            return false;
        }
        return true;
    }
}