/*
* Milyn - Copyright (C) 2006 - 2010
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License (version 2.1) as published by the Free Software
* Foundation.
*
* This library 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:
* http://www.gnu.org/licenses/lgpl.txt
*/
package org.milyn.javabean.dynamic.ext;
import org.milyn.SmooksException;
import org.milyn.cdr.SmooksConfigurationException;
import org.milyn.cdr.SmooksResourceConfiguration;
import org.milyn.cdr.extension.ExtensionContext;
import org.milyn.container.ExecutionContext;
import org.milyn.delivery.dom.DOMVisitBefore;
import org.milyn.javabean.ext.BeanConfigUtil;
import org.w3c.dom.Element;
/**
* Bean class lookup visitor.
* <p/>
* Used during processing of the <dmb:writer> extended DMB configuration
* for looking up the actual bean runtime Class from the beanId
* specified on the on the <dmb:writer>.
*
* <a href="mailto:tom.fennelly@gmail.com">tom.fennelly@gmail.com</a>
*/
public class BeanClassLookup implements DOMVisitBefore {
public void visitBefore(Element element, ExecutionContext executionContext) throws SmooksException {
// The current config on the stack must be <dmb:writer>...
ExtensionContext extensionContext = ExtensionContext.getExtensionContext(executionContext);
SmooksResourceConfiguration dmbWriterConfig = extensionContext.getResourceStack().peek();
if(dmbWriterConfig.getStringParameter("beanClass") == null) {
String beanId = dmbWriterConfig.getStringParameter("beanId");
if(beanId == null) {
throw new SmooksConfigurationException("One of the 'beanClass' or 'beanId' attributes must be configured on the <dmb:writer> configuration.");
}
SmooksResourceConfiguration beanCreatorConfig = BeanConfigUtil.findBeanCreatorConfig(beanId, executionContext);
if(beanCreatorConfig == null) {
throw new SmooksConfigurationException("Cannot find <jb:bean> configuration for beanId '" + beanId + "' for <dmb:writer>. Reordered <dmb:writer> after <jb:bean> config.");
}
String beanClass = beanCreatorConfig.getStringParameter(BeanConfigUtil.BEAN_CLASS_CONFIG);
if(beanClass == null) {
throw new SmooksConfigurationException("Cannot create find BeanWriter for beanId '" + beanId + "'. The associated <jb:bean> configuration does not define a bean Class name.");
}
dmbWriterConfig.setParameter(BeanConfigUtil.BEAN_CLASS_CONFIG, beanClass);
}
}
}